Dr. Elihu A. Boldt

INVITED LECTURES:

Advance to Publications in Refereed Journals:
Advance to Other Significant Publications:

1994

"The Cosmic X-ray Background As A Measure of History" The 16th International Conference on Neutrino Physics & Astrophysics, Eilat, Israel (May/June)

1993

"What Are X-ray Observations of Sky Background and Resolved Sources Telling Us About the Physics of AGN Evolution?", Stromlo Symposium, Canberra, Australia (June)

1991

"The Extragalactic Volume X-ray Emissivity", International Workshop On The X-ray Background, Laredo, Spain (September)

1991

"Origin of the X-ray Background", Aspen Workshop On Recent Advances in Physical Cosmology, Aspen, Colorado (January)

1989

"Is AGN Spectral Evolution Needed for the CXB?, 23rd ESLAB Symposium, Bologna, Italy (September)

1989

"EUV Observations as A Diagnostic of Possible AGN Sources of the Cosmic X-ray Background", Berkeley Colloquium on Extreme Ultraviolet Astronomy, Berkeley, CA (January)

1988

"The Cosmic X-ray Background", APS Workshop, "Particle Astrophysics Workshop-Forefront Experimental Issues, Berkeley, CA (December)

1988

"Personal Recollections on the Origins of the Einstein Observatory", Symposium to Celebrate the Tenth Anniversary of the Launch of the Einstein Observatory, Cambridge, MA (November)

1988

"X-ray Background Constraints on the LogN-LogS Relation for AGN", IAU Symposium 134, "Active Galactic Nuclei", Santa Cruz, CA (August)

1988

"The X-ray LogN-LogS Relation", "Large-Scale Structure and Motions in the Universe" Symposium, Triest, Italy (April)

1988

"The X-ray LogN-LogS Relation", International Symposium, Tokyo, Japan (Feb)

1987

"Extragalactic Diffuse X-ray Background", AAS #169, Pasadena, California (Jan)

1986

"Cosmic X-ray Background", IAU Symposium #124, Beijing, China (August)

1985

"Spectral Evolution of Active Galactic Nuclei", Conference on "Structure and Evolution of AGN", Trieste, Italy (April)

1984

"HEAO Results On The Cosmic X-ray Background", Third Rome (Italy) Meeting on Astrophysics, (Nov)

1984

"Extragalactic X-ray Astronomy", CCNY, New York (May)

1982

"Looking Beyond the Milky Way", Smithsonian Institution, Washington, D.C. (Nov)

1982

"X-ray Background", Aspen Meeting on Large Scale Structure of the Universe (June)

1980

"HEAO-1", Uhuru Symposium, Greenbelt (Dec)

1980

"The Cosmic X-ray Background", AAS, San Francisco, CA (Jan)

1979

"HEAO A2 Extragalactic Results", HEAO Symposium, MSFC, Huntsville, AL (May)

1978

"X-ray Astronomy", Smithsonian Institution, Washington, D.C. (Nov)

1978

"Results from HEAO-1"

• AAAS Meeting, Washington, D.C. (Feb)
• GSFC Colloquium (March)
• APS Meeting, Washington, D.C. (April)
• University of Chicago (May)

1976

"X-ray Signatures: New Time Scales and Spectral Features", 8th Texas Symposium on Relativistic Astrophysics, Boston (Dec)

1974

"What Is Special About Cygnus X-1?", Conference on "X-rays in Space", University of Calgary, Canada (August). Also Columbia University, New York.

1972

"Non-dispersive Spectroscopy with OSO and HEAO X-ray Experiments", ESRO Colloquium On X-Ray Astronomy in the Near Future, Frascati, Italy (May)

PUBLICATIONS IN REFEREED JOURNALS:

Back to Invited Lectures:
Advance to Other Significant Publications:

"BBXRT Observations of BL Lac Object PKS 2155-304", Madejski, G.M., Kallman, T., Serlemitsos, P.J., Done, C., Arnaud, K.A., Boldt, E., Holt, S.S., Jahoda, K., Kelley, R., Marshall, F., Mushotzky, R.F., Petre, R., Smale, A., Swank, J., Szymkowiak, A., Turner, T.J., and Weaver, K., 1996, ApJ, submitted

"BBXRT Observations of the Perseus Cluster I: the Fe-K Lines", Arnaud, K.A., Mushotzky, R.F., Serlemitsos, P.J., Boldt, E., Holt, S.S., Jahoda, K., Marshall, F.E., Petre, R., Smale, A.P., Swank, J.H., Szymkowiak, A.E., and Weaver, K.A., 1996, ApJS, submitted

"A High Resolution X-ray Spectrum of Cen X-3", Audley, M.D., Kelley, R.L., Boldt, E.A., Jahoda, K.M., Marshall, F.E., Petre, R., Serlemitsos, P.J, Smale, A.P., Swank, J.H., Weaver, K.A., 1996, ApJ, 457, 397

"On the Measurement of a Cosmological Dipole in the Photon Number Counts of Gamma-Ray Bursts", Scharf, C.A., Jahoda, K., and Boldt, E., 1995, ApJ, 454, 573

"The Next-Generation X-Ray Observatory", White, N.E., Petre, R., Boldt, E.A., Holt, S.S., Serlemitsos, P.J., Marshall, F.E., Stahl, C.K., Kelley, R., Arnaud, K., Szymkowiak, A.E., Mushotzky, R.F., Soong, Y., Gehrels, N.A., Parsons, A., Jahoda, K., Swank, J.H., Kallman, T.R., Mukai, K., Drake, S., and George, I.M., 1995, SPIE, 2518, 59

"Calibrating the Broad Band X-Ray Telescope", Weaver, K.A., Arnaud, K.A., Boldt, E.A., Christian, D., Corcoran, M., Holt, S.S., Jahoda, K., Kelley, R., Marshall, F.E., Mushotzky, R.F., Petre, R., Rawley, G., Serlemitsos, P.J., Schlegel, E.M., Smale, A.P., Swank, J.H., Szymkowiak, A.E., and Yamauchi, S., 1995 ApJ Supplement Series, 96, 303

"The Cosmic X-ray Background - IRAS Galaxy Correlation and the Local X-ray Volume Emissivity", T. Miyaji, O. Lahav, K. Jahoda, and E.Boldt, 1994, ApJ, 434, 424

"On Compton Reflection in the Sources of the Cosmic X-Ray Background", A.A. Zdziarski, P.T. Zycki, R. Svensson, and E. Boldt, 1993, ApJ, 405, 125.

"On the Observability of Microsecond Temporal Structure in the Emission from X-ray Binary Pulsars", M. Orlandini and E. Boldt, 1993, ApJ, 419, 776

"BBXRT Spectroscopy of Zeta Pup", M.F. Corcoran, J.H. Swank, P.J. Serlemitsos, E. Boldt, R. Petre, F.E. Marshall, K. Jahoda, R. Mushotzky, A. Szymkowiak, K. Arnaud, K. Weaver, and S.S. Holt, 1993, ApJ, 412, 792

"A Significant Contribution to the Cosmic X-ray Background from Sources Associated with Nearby Galaxies", O. Lahav, A.C. Fabian, X. Barcons, E. Boldt, J. Butcher, F.J. Carrera, K. Jahoda, T. Miyaji, G.C. Stewart, and R.S. Warwick, 1993, Nature, 364, 693

"BBXRT Observations of the Magnetic Cataclysmic Variable H0538+608 = BY Cam", T.R. Kallman , E.M. Schlegel, P.J. Serlemitsos, R. Petre, F. Marshall, K. Jahoda, E.A. Boldt, S.S. Holt, R.F. Mushotzky, J. Swank, A.E. Szymkowiak, R.E. Kelley, A. Smale, K. Arnaud, K. Weaver, and F.B. Paerels, 1993, ApJ, 411, 869

"Resolving the Iron K Line in Cygnus X-2; An Observation with BBXRT", Smale, A.P., Done, C., Mushotzky, R.F., Weaver, K.A., Serlemitsos, P.J., Marshall, F.E., Petre, R., Jahoda, K.M., Boldt, E.A., Swank, J.H., Szymkowiak, A.E., Kelley, R.L., and Arnaud, K.A., 1993, ApJ, 410, 796

"A BBXRT Spectrum of the Massive X-ray Binary X Per", Schlegel, E.M., Serlemitsos, P.J., Jahoda, K., Marshall, F., Petre, R., Boldt, E.A., Mushotzky, R., Swank, J., Szymkowiak, A., Smale, A., and Weaver, K., 1993, ApJ, 407, 744

"BBXRT Observations of NGC 4151: Iron Line Diagnostics", K.A. Weaver, R.F. Mushotzky, K.A. Arnaud, P.J. Serlemitsos, F.E. Marshall, R. Petre, K.M. Jahoda, E.A. Boldt, S.S. Holt, J.H. Swank, A.E. Szymkowiak, R. Kelley, A.P. Smale, and C. Done, 1993, ApJ Letters 401, L11

"Spatially Resolved X-ray Spectroscopy of the Merging Galaxy Cluster A2256", Miyaji, T., Mushotzky, R.F., Loewenstein, M., Serlemitsos, P.J., Marshall, F.E., Petre, R., Jahoda, K.M., Boldt, E.A., Holt, S.S., Swank, J., Szymkowiak, A.E., and Kelley, R., 1993, ApJ, 419, 66

"A New X-Ray Spectral Observation of NGC 1068", F.E. Marshall, H. Netzer, K.A. Arnaud, E.A. Boldt, S.S. Holt, K.M. Jahoda, R. Kelley, R.F. Mushotzky, R. Petre, P.J. Serlemitsos, A.P. Smale, J.H. Swank, A.E. Szymkowiak, and K.A. Weaver, 1993, ApJ, 405, 168

"Cross Correlation of the X-ray Background with Nearby Galaxies", K. Jahoda, O. Lahav, R. Mushotzky and E. Boldt, 1991, ApJ Letters, 378, L37 and 1992, ApJ Letters, 399, L107

"Small-Scale Fluctuations and Angular Correlations of the X-Ray Background in the HEAO 1 A-2 Energy Band: Constraints on Clustering of X-Ray Sources", J.M. Martin-Mirones, G. De Zotti, E.A. Boldt, F.E. Marshall, L. Danese, A. Franceschini, and M. Persic, 1991, ApJ, 379, 507

"X-ray Study of Superclusters", M. Persic, K. Jahoda, Y. Rephaeli, E. Boldt, F. Marshall, R. Mushotzky and G. Rawley, 1990, ApJ, 364, 1

"The X-ray Flux Dipole of Active Galactic Nuclei and the Peculiar Motion of the Local Group", T. Miyaji and E. Boldt, 1990, ApJ, 353, L3

"Constraints On Large-Scale Clustering from the Autocorrelation Properties of the X-Ray Background", G. De Zotti, M. Persic, A. Franceschini, L. Danese, G.G.C. Palumbo, E.A. Boldt, and F.E. Marshall, 1990, ApJ, 351, 22

"A Catalog of X-ray Measurements of Selected Samples of Active Galaxies and Nuclei", R. Della Ceca, G. Palumbo, M. Persic, E. Boldt, G. De Zotti, and F. Marshall, 1990, ApJ Suppl., 72, (Number 3), 471

"Contribution of Low-Luminosity Sources to the X-ray Background", M. Persic, G. De Zotti, L. Danese, G. Palumbo, A. Franceschini, E. Boldt, and F. Marshall, 1989, ApJ, 344, 125

"The Autocorrelation Properties of Fluctuations in the Cosmic X-ray Background", M. Persic, G. De Zotti, E. Boldt, F. Marshall, L. Danese, A. Franceschini, and G. Palumbo, 1989, ApJ, 336, L47

"A Bound On X-Ray Emission From The Intrasupercluster Medium", M. Persic, Y. Rephaeli, and E. Boldt, 1988, ApJ Letters, 327, L1-3

"Constraints On Possible Precursor AGN Sources of the Cosmic X-Ray Background", E. Boldt and D. Leiter, 1987, ApJ (Letter), 322, L1

"The Cosmic X-ray Background", E. Boldt, 1987, Physics Reports, 146, 215

"On The X-ray Spectrum of the Volume Emissivity Arising From Abell Clusters", A. Stottlemyer and E. Boldt, 1984, ApJ, 279, 511

"Optical Characteristics of Young Quasars As Sources of the X-ray Background", E. Boldt and D. Leiter, 1984, ApJ, 276, 427

"A Large Scale Height Galactic Component of the Diffuse 2-60 keV Background", D. Iwan, F. Marshall, E. Boldt, R. Mushotzky, R. Shafer, and A. Stottlemyer, 1982, ApJ, 260, 111

"Spectral Evolution of Active Galactic Nuclei: A Unified Description of the X-Ray and Gamma-Ray Backgrounds", D. Leiter and E. Boldt, 1982, ApJ, 260, 1

"HEAO-1 Measurements of the Galactic Ridge", D.M. Worrall, F.E. Marshall, E.A. Boldt, and J.H. Swank, 1982, ApJ, 255, 111

"A Complete X-Ray Sample of the High Latitude (|b| > 20^o) Sky from HEAO-1 A-2: Log N-Log S and Luminosity Functions", G. Piccinotti, R.F. Mushotzky, E.A. Boldt, S.S. Holt, F.E. Marshall, P.J. Serlemitsos, and R.A. Shafer, 1982, ApJ, 253, 485

"On Syntheses of the X-Ray Background with Power-Law Sources", G. DeZotti, E.A. Boldt, A. Cavaliere, L. Danese, A. Franceschini, F.E. Marshall, J.H. Swank, and A.E. Szymkowiak, 1982, ApJ, 253, 47

"The Cosmic X-ray Background", E. Boldt, 1981, Comments on Astrophys., 9, 97

"Rapid X-Ray Variability in NGC 6814", A.F. Tennant, R.F. Mushotzky, E.A. Boldt, and J.H. Swank, 1981, ApJ, 251, 15

"A 5.57 Hour Modulation of the X-Ray flux from 4U1822-37", N.E. White, R.H. Becker, E.A. Boldt, S.S. Holt, P.J. Serlemitsos, and J.H. Swank, 1981, ApJ, 247, 994

"Precursor Active Galaxies and the Cosmic X-Ray Background", E. Boldt and D. Leiter, 1981, Nature, 290, 483

"Variable X-Ray Spectra of BL Lacertae Objects: HEAO 1 Observations of PKS 0548-322 and 2A 1219+305", D.M. Worrall, E.A. Boldt, S.S. Holt, R.F. Mushotzky, and P.J. Serlemitsos, 1981, ApJ, 243, 53

"Observation of the Core of the Perseus Cluster with the Einstein Solid State Spectrometer", R. Mushotzky, S. Holt, B. Smith, E. Boldt, and P. Serlemitsos, 1981, ApJ, 244, L47

"X-ray Observations of Algol", N. White, S. Holt, R. Becker, E. Boldt, and P. Serlemitsos, 1980, ApJ, 239, L69

"X-ray Spectral Constraints on the Broad-Line Cloud Geometry of NGC 4l5l", S. Holt, R. Mushotzky, R. Becker, E. Boldt, P. Serlemitsos, A. Szymkowiak and N. White, 1980, ApJ, 24l, Ll3

"Is The Remnant of SNl006 Crablike?", R. Becker, A. Szymkowiak, E. Boldt, S. Holt, and P. Serlemitsos, 1980, ApJ, 240, L33

"The X-ray Spectrum of QSO 024l+622", D. Worrall, E. Boldt, S. Holt and P. Serlemitsos, 1980, ApJ, 240, 42l.

"The X-Ray Pulsars 4Ull45-6l and lEll45-6l4l", N. E. White, S. H. Pravdo, R. H. Becker, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, 1980, ApJ Letters, 239, 655

"The HEAO A2 Survey of Abell Clusters and the X-Ray Luminosity Function", J. D. McKee, R. F. Mushotzky, E. A. Boldt, S. S. Holt, F. E. Marshall, S. H. Pravdo, P. J. Serlemitsos, 1980, ApJ, 242, 843

"X-Ray Spectrum of Kepler's Supernova Remnant", R. Becker, E. Boldt, S. Holt, P. Serlemitsos, and N. White, 1980, ApJ, 237, L77

"X-Ray and UV Spectroscopy of Cyg X-l", S. Pravdo, N. White, Y. Kondo, R. Becker, E. Boldt, S. Holt, and P. Serlemitsos, 1980, ApJ, 237, L7l

"Elemental Abundances in A Type l Supernova Remnant", R. Becker, S. Holt, B. Smith, N. White, E. Boldt, R. Mushotzky, and P. Serlemitsos, 1980, ApJ, 235, L5

"HEAO l Spectra of X-Ray Emitting Seyfert l Galaxies", R. F. Mushotzky, F. E. Marshall, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, 1980, ApJ, 135, 377

"Diffuse X-Ray Background Spectrum from 3 to 50 keV", F. E. Marshall, E. A. Boldt, S. S. Holt, R. Miller, R. F. Mushotzky, L. A. Rose, R. E. Rothschild, P. J. Serlemitsos, 1980, ApJ, 235, 4

"A Limit to the X-Ray Luminosity of Nearby Normal Galaxies", D. M. Worrall, F. E. Marshall, E. A. Boldt, 1979, Nature, 28l, l27

"HEAO 1 Observations of a Type l Burst from MXB1728-34", Hoffman, et al., J. H. Swank, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, 1979, ApJ Letters, 233, L5l

"X-Ray Line Emission From Capella", S. Holt, N. White, R. Becker, E. Boldt, R. Mushotzky, P. Serlemitsos, and B. Smith, 1979, ApJ, 234, L65

"A Search for X-Ray Emission from Rich Clusters, Extended Halos Around Clusters and Superclusters", S. H. Pravdo, E. A. Boldt, F. E. Marshall, J. McKee, R. F. Mushotzky, B. W. Smith, G. Reichert, 1979, ApJ, 234, l

"A Change in the X-Ray Spectrum of Mk42l", R. F. Mushotzky, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, 1979, ApJ Letters, 232, Ll7

"X-Ray Spectrum of Cas A Measured with the Einstein SSS", R. Becker, S. Holt, B. Smith, N. White, E. Boldt, R. Mushotzky, and P. Serlemitsos, 1979, ApJ 234, L73

"The Cosmic X-Ray Experiment Aboard HEAO-1", R. E. Rothschild, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, G. Garmire, P. Agrawal, G. Riegler, S. Bowyer, and M. Lampton, 1979, Space Science Instrumentation, 4, 269

"Large Scale Structure of X-Ray Clusters of Galaxies", P. E. J. Nulsen, R. F. Mushotzky, E. A. Boldt, S. S. Holt, F. E. Marshall, P. J. Serlemitsos, 1979, MNRAS, l89, l83

"HEAO-l Observations of the X-Ray Pulsar 4U1626-67", S. H. Pravdo, N. E. White, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, J. H. Swank, A. E. Szymkowiak, I. Tuohy, and G. Garmire, 1979, ApJ, 23l, 9l2

"X-Ray Spectrum of 3C273", D.M. Worrall, R.F. Mushotzky, E.A. Boldt, S.S. Holt, P.J. Serlemitsos, 1979, ApJ, 232, 683

"X-Ray Observations of SS433", F.E. Marshall, J.H. Swank, E.A. Boldt, S.S. Holt, and P.J. Serlemitsos, 1979, ApJ Letters, 230, L145

"Long-Term Studies with the Ariel 5 ASM II", S. Holt, L. Kaluzienski, E. Boldt, and P.J. Serlemitsos, 1979, ApJ, 233, 344

"Extended-Bandwidth X-ray Observations of Cygnus X-1", W. Priedhorsky, G. Garmire, R. Rothschild, E. Boldt, P. Serlemitsos, and S. Holt, 1979, ApJ, 233, 350

"New Hard X-Ray Sources Observed with HEAO A-2", F. Marshall, E. Boldt, R. Mushotzky, S. Pravdo, R. Rothschild, and P. Serlemitsos, 1979, ApJ Suppl., 40, 657

"Observations of the Transient X-Ray Source 4U0ll5+63", L. Rose, S. Pravdo, L. Kaluzienski, F. Marshall, S. Holt, E. Boldt, R. Rothschild, and P. Serlemitsos, 1979, ApJ, 23l, 9l9

"X-ray Spectra of X Per", R. Becker, E. Boldt, S. Holt, S. Pravdo, J. Robinson-Saba, P. Serlemitsos, and J. Swank, 1979, ApJ, 227, L2l

"Long-term Studies with the Ariel-5 ASM-I", S. Holt, L. Kaluzienski, E. Boldt, and P. Serlemitsos, ApJ, 1979, 227, 563

"X-ray Observations of BL Lacertae Objects", R. Mushotzky, E. Boldt, S. Holt, S. Pravdo, P. Serlemitsos, J. Swank, and R. Rothschild, 1978, ApJ, 226, L65

"Hard X-rays from U Geminorum", J. Swank, E. Boldt, S. Holt, R. Rothschild, and P. Serlemitsos, 1978, ApJ, 226, L133

"HEAO Observations of X-ray Bursts from MXBl730-335", J. Swank, E. Boldt, S. Holt, R. Rothschild, and P. Serlemitsos, 1978, Nature, 276, 587

"N Galaxies - a New Class of X-ray Sources", F. Marshall, R. Mushotzky, E. Boldt, S. Holt, R. Rothschild, and P. Serlemitsos, 1978, Nature, 275, 624

"Discovery of Iron Line Emission in the Hercules X-l Low-State Spectrum with HEAO-l", S. Pravdo, E. Boldt, S. Holt, R. Rothschild, and P. Serlemitsos, 1978, ApJ, 225, L53

"OSO-8 X-ray Spectra of Clusters of Galaxies I", R. Mushotzky, P. Serlemitsos, B. Smith, E. Boldt, and S. Holt, 1978, ApJ,225, 2l

"A 4.8 Hour Periodicity in the Spectrum of Cygnus X-3", R. Becker, J. Robinson-Saba, E. Boldt, S. Holt, S. Pravdo, P. Serlemitsos, and J. Swank, 1978, ApJ ,224, L113

"The Core for a Burst from 3U06l4+09", J. Swank, R. Becker, E. Boldt, S. Holt, and P. Serlemitsos, 1978, MNRAS, l82, 349

"Observations of Low-Luminosity X-ray Sources in Vela-Puppis", S. Pravdo, R. Becker, E. Boldt, S. Holt, R. Serlemitsos, and J. Swank, 1978, ApJ, 223, 577

"Extended Observations of Vela X-1 by OSO-8", R. Becker, R. Rothschild, E. Boldt, S. Holt, S. Pravdo, P. Serlemitsos, and J. Swank, 1978, ApJ, 221, 912

"X-ray Spectrum of Hercules X-1: III. Pulse Phase Dependence in the High-Energy Continuum", S. Pravdo, R. Bussard, R. Becker, E. Boldt, S. Holt, P. Serlemitsos, 1978, ApJ, 225, 988

"The X-Ray Emitting Galaxy Cen-A", R. Mushotzky, P. Serlemitsos, R. Becker, E. Boldt, S. Holt, 1978, ApJ, 220, 740

"All-Sky Monitor Observations of the Decay of A0620-00 (Nova Monocerotis 1975)", L. Kaluzienski, S. Holt, E. Boldt, and P. Serlemitsos, 1977, ApJ, 212, 203

"OSO-8 X-ray Observations of AM Hercules", J. Swank, M. Lampton, E. Boldt, S. Holt, and P. Serlemitsos, 1977, ApJ, 216, L71

"Spectral Characteristics of 3U1915-05, A Burst Source Candidate", R.H. Becker, B.W. Smith, J.H. Swank, E.A. Boldt, S.S. Holt, S.H. Pravdo, and P.J. Serlemitsos, 1977, ApJ, 216, L101

"A1540-53, An Eclipsing X-Ray Binary Pulsator", R.H. Becker, J.H. Swank, E.A. Boldt, S.S. Holt, S.H. Pravdo, J.R. Saba, and P.J. Serlemitsos, 1977, ApJ Letters, 216, L11

"Spectral Evolution of a Long X-Ray Burst", J.H. Swank, R.H. Becker, E.A. Boldt, S.S. Holt, S.H. Pravdo, and P.J. Serlemitsos, 1977, ApJ Letters, 212, L73

"Absence of Detectable X-rays from Supercluster Candidate 4U0134-11", S. Pravdo, R. Mushotzky, R. Becker, E. Boldt, S. Holt, P. Serlemitsos, and J. Swank, 1977, Nature, 270, 158

"Submillisecond Measurements of the Low State of Cyg X-1", R. Rothschild, E. Boldt, S. Holt, and P. Serlemitsos, 1977, ApJ, 213, 818

"X-Ray Spectra of Hercules X-1: II. The Pulse", S.H. Pravdo, E.A. Boldt, S.S. Holt, P.J. Serlemitsos, 1977, ApJ, 216, L23

"X-Ray Spectra of Hercules X-1: I. Iron Line Fluorescence From a Subrelativistic Shell", S.H. Pravdo, R.H. Becker, E.A. Boldt, S.S. Holt, P.J. Serlemitsos, and J.H. Swank, 1977, ApJ ,215, L61

"X-Radiation from Clusters of Galaxies: Spectra Evidence for a Hot Evolved Gas", P.J. Serlemitsos, B.W. Smith, E.A. Boldt, S.S. Holt, and J.H. Swank, 1977, ApJ Letters, 211, L63

"Recurrent X-Ray Outburst from Aquila X-1", L.J. Kaluzienski, S.S. Holt, E.A. Boldt, and P.J. Serlemitsos, 1977, Nature, 265, 606

"Spectra of Her X-1 Near a Turn-On in the 35-day Cycle", R.H. Becker, E.A. Boldt, S.S. Holt, S.H. Pravdo, R.E. Rothschild, P.J. Serlemitsos, B.W. Smith, and J.H. Swank, 1977, ApJ, 214, 879

"All-Sky Monitor Observations of the Decay of A0620-00 (Nova Monocerotis l975)", L. J. Kaluzienski, S.S. Holt, E.A. Boldt, P.J. Serlemitsos, 1977, ApJ, 212, 203

"Variations in the Spectra and Pulse Period of GX 301-2", J. H. Swank, R. H. Becker, E. A. Boldt, S. S. Holt, S. H. Pravdo, R. E. Rothschild, and P. J. Serlemitsos, 1976, ApJ Letters, 209, L57

"X-Ray Emission from the Supernova Remnant G287.8 - 0.5", R. H. Becker, E. A. Boldt, S. S. Holt, S. H. Pravdo, R. E. Rothschild, P. J. Serlemitsos, and J. H. Swank, 1976, ApJ Letters, 209, L65

"An X-Ray Red-Shift Test for Clusters of Galaxies up to z > l", E. A. Boldt, 1976, ApJ Letters, 208, Ll5

"Iron Line Emission from a High Temperature Plasma in Cas A", S. H. Pravdo, R. H. Becker, E. A. Boldt, S. S. Holt, R. E. Rothschild, P. J. Serlemitsos, and J. H. Swank, 1976, ApJ Letters, 206, L4l

"Evidence for a l7d Periodicity from Cyg X-3", S. Holt, E. Boldt, P. Serlemitsos, L. Kaluzienski, S. Pravdo, A. Peacock, M. Elvis, M. Watson, and K. Pounds, 1976, Nature, 260, 592

"Cyg X-l: A Return to the Pre-l97l Intensity Level and a 5.6-day Modulation", S. S. Holt, L. J. Kaluzienski, E. A. Boldt, P. J. Serlemitsos, 1976, Nature, 26l, 5557, 2l3-2l5

"Evidence for a l6^d.6 Period from Circinus X-l", L. J. Kaluzienski, S. S. Holt, E. A. Boldt, P. J. Serlemitsos, 1976, ApJ Letters, 208, L7l

"Spectral Variability in the X-Ray Pulsar GX 1+4", R. H. Becker, E. A. Boldt, S. S. Holt, S. H. Pravdo, R. E. Rothschild, P. J. Serlemitsos, and J. H. Swank, 1976, ApJ Letters, 207, Ll67

"X-Ray Observations of the Vela Pulsar: Statistics and Spectrum", S. H. Pravdo, R. H. Becker, E. A. Boldt, S. S. Holt, R. E. Rothschild, P. J. Serlemitsos, and J. H. Swank, 1976, ApJ Letters, 208, L69

"The 35-d X-Ray Profile of Her X-l", S. S. Holt, E. A. Boldt, L. J. Kaluzienski, P. J. Serlemitsos, and J. H. Swank, 1976, Nature, 263, 484

"A Return to the Pre-l97l Intensity Level and a 5.6-d Modulation for Cyg X-l", S. S. Holt, L. J. Kaluzienski, E. A. Boldt, P. J. Serlemitsos, 1976, Nature 26l, No. 5557, 2l3

"Long-Term Studies of Sco X-l: II. Evidence for Flare-Dominated Intensity Variations", S. S. Holt, E. A. Boldt, P. J. Serlemitsos, and L. J. Kaluzienski, 1976, ApJ Letters 205, L79

"Evidence for an ll.2d Periodicity from Cyg X-2", S. S. Holt, E. A. Boldt, P. J. Serlemitsos, and L. J. Kaluzienski, 1976, ApJ Letters 205, L143

"Long-Term Studies of Sco X-l: I. Search for Binary Periodicity", S. S. Holt, E. A Boldt, P. J. Serlemitsos, and L. J. Kaluzienski, 1976, ApJ Letters 205, L27

"New Results from Long-Term Observations of Cyg X-l", S. S. Holt, E. A. Boldt, P. J. Serlemitsos, and L. J. Kaluzienski, 1976, ApJ Letters, 203, L63

"The Her X-l Spectrum: A Measure of the Field Near the Magnetic Poles of a Neutron Star", E. A. Boldt, S. S. Holt, R. E. Rothschild, and P. J. Serlemitsos, 1976, Astronomy and Astrophysics, 50, l6l

"KX-Rays from Cosmic Ray Oxygen", S. H. Pravdo and E. A. Boldt, 1975, ApJ , 200, 727

"The Light Curve of a Transient X-Ray Source", L. J. Kaluzienski, S. S. Holt, E. A. Boldt, P. J. Serlemitsos, G. Endi, K. A. Pounds M. J. Ricketts, and M. Watson, 1975, ApJ Letters, 20l, Ll2l

"Spectral Variability of Cyg X-3", P. J. Serlemitsos, E. A. Boldt, S. S. Holt, R. E. Rothschild, and J. L. R. Saba, 1975, ApJ Letters, 20l, L9

"The Decay of A0535-26", L.J. Kaluzienski, S.S. Holt, E.A. Boldt, and P.J. Serlemitsos, 1975, Nature, 256, 633

"Observation of a New Transition in the Emission from Cyg X-l", S. S. Holt, E.A. Boldt, L.J. Kaluzienski, and P.J. Serlemitsos, 1975, Nature, 256, 108

"Millisecond Temporal Structure in Cygnus X-l", R. Rothschild, E. Boldt, S. Holt, and P. Serlemitsos, 1974, ApJ Letters, l89, Ll3

"On the Nature of the Unidentified High-Latitude UHURU Sources", S. Holt, E. Boldt, P. Serlemitsos, S. Murray, R. Giacconi, E. Kellogg, and T. Matilsky, 1974, ApJ Letters, l88, L97

"A New Measurement of the Hercules X-l X-Ray Pulse Profile", S. S. Holt, E. A. Boldt, R. E. Rothschild, J. L. R. Saba, and P. J. Serlemitsos, 1974, ApJ, l90, Ll09

"Cas A X-Ray Spectrum: Evidence for Iron Line Emission", P. J. Serlemitsos, E. A. Boldt, S. S. Holt, R. Ramaty, and A. F. Brisken, 1973, ApJ Letters, l84, Ll

"Short-Term Temporal Studies of the X-Ray Emission from Cassiopeia A, Tycho, and Scorpius X-l", S. S. Holt, E. A. Boldt, A. Brisken, and P. J. Serlemitsos, 1973, ApJ Letters, l80, L69

"X-Ray Spectra of Discrete Sources in Cygnus", R. D. Bleach, E. A. Boldt, S. S. Holt, D. A. Schwartz, and P. J. Serlemitsos, 1972, ApJ, l7l, 5l

"X-Ray Emission from the Galactic Disk", R. D. Bleach, E. A. Boldt, S. S. Holt, D. A. Schwartz, and P. J. Serlemitsos, 1972, ApJ Letters, l74, Ll0l

"A High Sensitivity Search for X-Rays from Supernova Remnants in Aquila", D. A. Schwartz, R. D. Bleach, E. A. Boldt, S. S. Holt, and P. J. Serlemitsos, 1972, ApJ Letters, l73, L5l

"Search for Temporal Structure in X-Rays from Sco X-l", E. A. Boldt, S. S. Holt, and P. J. Serlemitsos, 1971, ApJ Letters, l64, L9

"Limits on the Small Scale Structure of the Diffuse Cosmic X-Rays", D. A. Schwartz, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, and R. D. Bleach, 1971, Nature (PS), 223, 110

"A Limit on Line Emission in the X-Ray Background at High Galactic Latitudes", E. A. Boldt, U. D. Desai, S. S. Holt, and P. J. Serlemitsos, 1971, ApJ, l67, Ll

"Evidence for Multiple Periodicity in the X-Ray Emission from Cygnus X-1", S.S. Holt, E.A. Boldt, D.A. Schwartz, P.J. Serlemitsos, and R.D. Bleach, 1971, ApJ, 166, L65

"Ionization and Heating of the Gum Nebula by Energetic Particles from Vela X Supernova", R. Ramaty, E.A. Boldt, S.A. Colgate, and J. Silk, 1971, ApJ, 169, 87

"Hard X-Rays from Sco X-1", G.R. Riegler, E. Boldt, and P. Serlemitsos, 1970, Nature, 226, 1041

"2-20 keV X-Ray Sky Background", E. A. Boldt, U. D. Desai, S. S. Holt, P. J. Serlemitsos, 1969, Nature, 224, 5220

"Search for Line Structure in the X-Ray Spectrum of Sco X-l", S. S. Holt, E. A. Boldt, P. J. Serlemitsos, 1969, ApJ Letters, l58, Ll55

"Cosmic X-Ray Bremsstrahlung Associated with Suprathermal Protons", E. Boldt, P. J. Serlemitsos, 1969, ApJ, l57, 557

"Pulsed X-Ray Emission of NP 0532 in March l968", E. A. Boldt, U. D. Desai, S. S. Holt, P. J. Serlemitsos, R. F. Silverberg, 1969, Nature, 223, 280

"2-20 keV Spectrum of X-Rays from the Crab Nebula and the Diffuse Background Near Galactic Anticenter", E. Boldt, U. D. Desai, S. S. Holt, 1969, ApJ, l56, 427

"Iron Line Emission from X-Ray Sources", S. Holt, E. Boldt, P. J. Serlemitsos, 1968, ApJ Letters, l54, L137

"Upper Limit on X-Radiation from a New Supernova", H. Bradt, S. Naranan, S. Rappaport, F. Zwicky, H. Ogelman, E. Boldt, 1968, Nature, 2l8, 856

"A Comparison of the X-Ray Spectra from Tau XR-l and the Vicinity of Sgr XR-l", G. Riegler, E. Boldt, P. Serlemitsos, 1968, ApJ, l53, 95

"Solar Modulation of Galactic Cosmic Rays", V. K. Balasubrahmanyan, E. Boldt, R. A. R. Palmeira, 1967, JGR 72, 27

"An Extended Source of Energetic Cosmic X-Rays", E. Boldt, F. B. McDonald, G. Riegler, P. Serlemitsos, 1966, Phys.Rev.Ltrs, l7, 447

"The Poynting Vector in Magentohydrodynamics", E. Boldt, 1965, Am. J. Phys., 33, 298

"The Low Energy Spectrum of Cosmic Rays as an Indicator of Primary Source Characteristics & Interstellar Propagation", V. K. Balasubrahmanyan, E. Boldt, R.A R. Palmeira, 1965, Phys.Rev., l40, No. 4B, Bll57-Bll6l

"Theory of Unstable Particles", E. Boldt and G. Sandri, 1964, Phys.Rev., 135, B1086

"A Study of the Reaction K⁺ + rho -> K^o + pi⁺ + rho at 1.14 GeV/c", E. Boldt et al., 1964, Phys.Rev. 133, B220

"Faisceau Separe De Mesons K⁺ De 0.7a 1.3 GeV/c", A. Allard, C. Bohy, E. Boldt et al., 1963, Nuclear Instruments and Methods 24, 133

"Time Dependence of the Decay Energy Spectrum for Stopped Cosmic Ray Particles at Sea Level", E. Boldt, P. Stoler, and C. Tsipis, 1963, Phys.Rev., 132, 1803

"Mesures des sections efficaces d'echange de charge inelastique des mesons K⁺ dans I'hydrogene a 1.12 et 1.45 GeV/c", D. Berley, E. Boldt et al., 1962, Comptes Rendus, Academie des Sciences, 255, 890

"Utilization of Optical Filters in a Scintillation Detector", E. Boldt and C. Tsipis, 1961, Review of Scientific Instruments, 32, 280

"Neutral Decay Modes of the Theta^o₁and Lamda^o", E. Boldt, H. Bridge, D. Caldwell, and Y. Pal, 1958, Phys.Rev., 112, 1746

"Helicity of the Proton from Lamda^o Decay", E. Boldt, H. Bridge, D. Caldwell, and Y. Pal, 1958, Phys.Rev. Letters, 1, 256

"Theta⁰₁- Theta⁰₂Mass Difference", E. Boldt, D. Caldwell, and Y. Pal, 1958, Phys.Rev. Letters, 1, 150

"Lamda⁰, Theta⁰₁, Theta⁰₂, and Theta⁰ Lifetimes", E. Boldt, D. Caldwell, and Y. Pal, 1958, Phys.Rev.Letters, 1, 148

OTHER SIGNIFICANT PUBLICATIONS:

Back to Invited Lectures:
Back to Publications in Refereed Journals:

"The Cosmic X-ray Background As A Measure of History" Boldt , E. & Leiter, D., 16th Intl Conf on Neutrino Physics & Astrophysics, Eilat, Israel 1994; in Nuclear Physics B (Proc. Suppl.), eds. A. Dar & M. Gronau, 1995, 38, 440

"BBXRT Observations of Supernova Remnants", Petre, R., Serlemitsos, P., Marshall, F., Jahoda, K., Szymkowiak, A., Smale, A., Swank, J., Corcoran, M., Ptak, A., Boldt, E., Holt, S., Kelley, R., Mushotzky, R., and Weaver, K., 1993, Adv. Space Res., Vol. 13, No. 12, p. 57-66

"What Are X-Ray Observations of Sky Background and Discrete Sources Telling Us about the Physics of AGN (Active Galactic Nucleus) Evolution?", E. Boldt and D. Leiter, 1993, Proceedings of First Stromlo Symp, Canberra, Australia, June 27-July 2, 1993; Conference Series of the Astronomical Society of the Pacific, ASP Conf. Ser. 54, 131 (1994)

"X-ray Spectrum of BL Lac Object PKS2155-304", G. Madejski, T. Kallman, K. Arnaud, E. Boldt, C. Done, S. Holt, K. Jahoda, R. Kelley, F. Marshall, R. Mushotzky, R. Petre, P. Serlemitsos, A. Smale, J. Swank, A. Szymkowiak, T.J. Turner, and K. Weaver, 1993, BAAS, 24, 1208

"Microsecond Temporal Structure in the Emission from X-ray Binary Pulsars", M. Orlandini and E. Boldt, 1993, Proc. Oct. Conf. "Evolution of X-Ray Binaries", Univ. of Maryland; AIP Conf. Proc. 308, 557 (1994)

"Spectral-Luminosity Evolution of Active Galactic Nuclei and the Cosmic X-Ray Background", D. Leiter and E. Boldt; 1993, Proc Int. Symp on "Observational Cosmology", PASP Conf Series, Milan, Sept . 21-25, 1992; ASP Conf. Ser.51, 473 (1993)

"Highlights of the BBXRT Mission", R. Petre, P.J. Serlemitsos, F.E. Marshall, K.A. Jahoda, E.A. Boldt, S.S. Holt, R.L. Kelley, J.H. Swank, A.F. Szymkowiak, K.A. Arnaud, and the BBXRT Science Team; 1992, UV & X-Ray Spectroscopy of Astrophysical and Laboratory Plasmas, eds. E. Silver and S. Kahn (Cambridge Univ. Press), p. 424

"Spectral - Luminosity Evolution of AGN", D. Leiter and E. Boldt; 1992, in "Testing the AGN Paradigm" (eds S. Holt, S. Neff and C.M. Urry), AIP Conference (College Park, MD 1991) Proceedings 254, p. 370

"The Extragalactic Volume X-ray Emissivity", E. Boldt, 1992, in "The Proceedings of International Workshop On The X-ray Background, Laredo, Spain (September 1991), "The X-ray Background" (eds X. Barcons and A. Fabian), Cambridge University Press, p. 115

"BBXRT Observations of the DXRB: First Results", K. Jahoda, P.J. Serlemitsos, K.A. Arnaud, E. Boldt, S. Holt, F.E. Marshall, R.F. Mushotzky, R. Petre, W.T. Sanders, A. Smale, J. Swank, A. Szymkowiak, K. Weaver, and S. Yamauchi, 1992, Proceedings of the Int. Colloquium on the XRB, Laredo, Spain, 1991, "The X-Ray Background", eds. X. Barcons and A.C. Fabian (Cambridge University Press), p. 240

"BBXRT Observations of AGN", F.E. Marshall, E.A. Boldt, S.S. Holt, K.M. Jahoda, R.L. Kelley, R.F. Mushotzky, R. Petre, P.J. Serlemitsos, A.P. Smale, J.H. Swank, A.E. Szymkowiak, and K. Weaver, 1992, Proceedings of the 28th Yamada Conference "Frontiers of X-ray Astronomy", Nagoya, Japan, April 8-12, 1991, eds. Y. Tanaka and K. Koyama (Tokyo: Universal Academy Press), p. 233

"First Results from BBXRT", P. J. Serlemitsos, F. E. Marshall, R. Petre, K. Jahoda, E. Boldt, S. S. Holt, R. Mushotzky, J. Swank, and A. Szymkowiak, R. Kelley, M. Loewenstein, 1992, Proceedings of the 28th Yamada Conference "Frontiers of X-ray Astronomy", Nagoya, Japan, April 8-12, 1991, eds. Y. Tanaka and K. Koyama (Tokyo: Universal Academy Press), p. 221

"BBXRT Spectroscopy of the X-ray Binaries Cygnus X-2 and XB0614+09", A. P. Smale, P. J. Serlemitsos, F. E. Marshall, R. Petre, K. Jahoda, E. Boldt, S. S. Holt, R. Mushotzky, J. Swank, and A. Szymkowiak, 1992, Proceedings of the 28th Yamada Conference "Frontiers of X-ray Astronomy", Nagoya, Japan, April 8-12, 1991, eds. Y. Tanaka and K. Koyama (Tokyo: Universal Academy Press), p. 129

"BBXRT Observations of the Perseus Cluster", K. A. Arnaud, P. J. Serlemitsos, F. E. Marshall, R. Petre, K. Jahoda, E. Boldt, S. S. Holt, R. F. Mushotzky, J. H. Swank, and A. E. Szymkowiak, 1992, Proceedings of the 28th Yamada Conference "Frontiers of X-ray Astronomy", Nagoya, Japan, April 8-12, 1991, eds. Y. Tanaka and K. Koyama (Tokyo: Universal Academy Press), p. 481

"BBXRT Observations of BL Lac Objects PKS 2155-304 and H1426+428", G. Madejski, P. Serlemitsos, F. Marshall, T. Kallman, R. Mushotzky, J. Turner, C. Done, K. Arnaud, E. Boldt, S. Holt, K. Jahoda, R. Kelley, R. Petre, A. Smale, J. Swank, A. Szymkowiak, and K. Weaver, 1992, Proceedings of the 28th Yamada Conference "Frontiers of X-ray Astronomy", Nagoya, Japan, April 8-12, 1991, eds. Y. Tanaka and K. Koyama (Tokyo: Universal Academy Press), p. 583

"The X-ray Flux Dipole of AGNs as an Indicator of the Local Gravitational Field", T. Miyaji, K. Jahoda and E. Boldt, 1991, in "After the First Three Minutes" (eds. S. Holt, C. Bennett, and V. Trimble), AIP Conference Proceedings 222, p. 431

"Spectral Evolution of AGN and the Cosmic X-ray Background", D. Leiter and E. Boldt, 1991, in "After The First Three Minutes" (eds S. Holt , C. Bennett and V. Trimble), AIP Conference Proceedings 222, p. 329

"EUV Observations as A Diagnostic of Possible AGN Sources of the Cosmic X-ray Background", E. Boldt, 1991, in "Extreme Ultraviolet Astronomy", R.F. Malina and S. Bowyer (eds), Pergamon Press (New York), p. 245

"The Cosmic X-ray Background", E. Boldt, 1991, in "The Reference Encyclopedia of Astronomy and Astrophysics", S. Maran (ed), Van Nostrand Reinhold (New York), p. 49

"Personal Recollections on the Origins of the Einstein Observatory", E. Boldt, 1990, Symposium at Cambridge, MA, Nov. 13-15, 1988, in "Imaging X-Ray Astronomy--A Decade of Einstein Observatory Achievements", M. Elvis (ed), Cambridge University Press (Cambridge University Press (Cambridge, UK), p. 6

"The All-Sky Extragalactic X-Ray Foreground", E. Boldt, 1990, Proceedings of the IAU Symposium 123, "Observatories in Earth Orbit and Beyond", NASA/GSFC, April 24-27, 1990, Kluwer (Dordrecht), p. 451

"The All-Sky X-ray Foreground: Outstanding Issues", E. Boldt, 1990, in "Workshop on High Energy Astrophysics in the 21st Century", AIP Conference Proceedings 211, P. Joss (ed), American Institute of Physics (New York), p. 93

"X-Ray Constraints on Large Scale Clustering", G. De Zotti, M. Persic, E.A. Boldt, F.E. Marshall, L. Danese, A. Franceschini, and G.G.C. Palumbo, 1989, "Large Scale Structure and Motions in the Universe", M. Mezzetti et al. (eds.), Kluwer Academic Publishers (Dordrecht, Netherlands), p. 303-316

"Is AGN Spectral Evolution Needed for the CXB?, E. Boldt, 1989, Proceedings of 23rd ESLAB Symposium on Two-Topics in X-Ray Astronomy, September 13-20, 1989, Bologna, Italy (ESA SP-296, Nov. 1989), p. 797

"The Cosmic X-ray Background: Observational Issues", E. Boldt, 1989, Proceedings of APS "Particle Astrophysics Workshop-Forefront Experimental Issues", Dec. 8-10, 1988, Berkeley, CA, E. Norman (ed), World Scientific Publishing Co. (Singapore), p. 242

"X-ray Constraints on AGN Clustering", G. De Zotti, M. Persic, A. Franceschini, L. Danese, G. Palumbo, G. Palumbo, E. Boldt, and F. Marshall, 1989, in Proceedings of IAU Symposium 134 "Active Galactic Nuclei" August 15-19, 1988, Santa Cruz, CA, D.E. Osterbrock and J.S. Miller (eds), Kluwer Academic Publishers (Dordrecht, Netherlands), p. 492

"X-ray Background Constraints on the Log N - Log S Relation for AGN", E. Boldt, 1989, Proceedings of IAU Symposium 134 "Active Galactic Nuclei" August 15-19, 1988, Santa Cruz, CA, D.E. Osterbrock and J.S. Miller (eds), Kluwer Academic Publishers (Dordrecht, Netherlands), p. 205

"The X-ray Log N - Log S Relation", E. Boldt, 1989, in Proceedings of April 6-9, 1988 Symposium "Large-Scale Structure and Motions in the Universe", Trieste, Italy, M. Mezzette et al. (eds), Kluwer Academic Publishers (Dordrecht, Netherlands), p. 291

"The X-Ray Log N-Log S Relation", E. Boldt, 1988, in "Physics of Neutron Stars and Black Holes, Proceedings of the International Symposium" held February 1-3, 1988, Sanjou Kaikan, University of Tokyo, Japan, Universal Academy Press, Japan ISBN 4-946443-04-5 (Y. Tanaka, ed.), p. 333

"The Cosmic X-Ray Background", E. Boldt, 1987, in "Essays in Space Science" (eds. R. Ramaty, T. Cline, J. Ormes), NASA Conference Publication 2464, Chapter 15, p. 339

"The Extragalactic X-ray Background", E. Boldt, 1987, AAS Meeting Invited Paper, GSFC LHEA 87-002

"The Cosmic X-ray Background", E. Boldt, 1987, in "Observational Cosmology" (A. Hewitt et al. eds.), D. Reidel (Dordrecht), p. 383

"HEAO Results on the Cosmic X-ray Background", E. Boldt, 1986, in Cosmic Pathways (ed: R. Cowsik), Tata McGraw-Hill, New Delhi, p. 229

"Calibration of Si(Li) Detectors In X-ray Astronomy", J. Lochner and E. Boldt, 1986, Nuclear Instruments and Methods in Physics Research A242, 382

"Spectral Evolution In Young Active Galactic Nuclei", E. Boldt and D. Leiter, 1986, in Proceedings of Symposium "Structure and Evolution of AGN," Trieste, April 10-13, 1985 (eds. G. Guiricin et al.), D. Reidel (Dordrecht), p. 383

"HEAO Results on The Cosmic X-ray Background", E. Boldt, 1985, in Conference Proceedings "The Cosmic Background Radiation and Fundamental Physics", Rome, Nov. 26-30, 1984 (ed. F. Melchiorri), Italian Physical Society, Editrice Compositor (Bologna), p. 257

"The High Energy Astronomy Observatory: HEAO-1", E. Boldt, 1981, Proceedings of Uhuru Symposium, Wash. Acad. Sci. 71, 24

"Ultraviolet and X-Ray Observations of Seyfert Galaxies and Low z QSO's". C. C. Wu, A. Boggess, R. R. Gull, R. F. Mushotzky, E. A. Boldt, S. S. Holt, P. J. Serlemitsos, 1979, Proc. of the Symposium on the First Year of IUE

"HEAO A2 Extragalactic Results", E. Boldt , 1979, in "HEAO Science Symposium", MSFC (eds. C. Dailey and W. Johnson), NASA CP-2113, p. 82

"Recent Observations of Hercules X-l with HEAO-l and OSO-8", S. Pravdo, R. Becker, R. Bussard, E. Boldt, S. Holt, R. Rothschild, P. Serlemitsos, and J. Swank, 1979, Proceedings of COSPAR-IAU Symposium, p. 2l9

"The Fluctuating and Isotropic Components of the Cosmic X-ray Background", E. Boldt, A. Stottlemyer, R. Shafter, F. Marshall, R. Mushotzky, S. Holt, R. Rothschild, and P. Serlemitsos, 1979, Proceedings of COSPAR-IAU Symposium, Pergamon Press Oxford (eds. W. Baity and L. Peterson) p. 443

"The Diffuse Component of the Cosmic X-Radiation", E. Boldt, 1978, Invited talk at AAS Meeting, Wash., D.C. (Feb. 13), NASA Tm 78106

"X-ray Signatures of Compact Objects", E. Boldt, 1977, Chapter IV in "Recognition of Compact Astrophysical Objects", (eds. H. Ogelman and R. Rothschild), NASA SP-421

"X-Ray Signatures: New Time Scales and Spectral Features", E. Boldt, 1977, Eighth Texas Symposium on Relativistic Astrophysics, Ann. NY Acad. Sci 302, 329

"X-ray Binaries", E. Boldt, 1976, edited by Y. Kondo and E. Boldt, NASA SP-389.

"High Resolution Measurements of Cyg X-l from Rockets", R. E. Rothschild, E. A. Boldt, S. S. Holt, and P. J. Serlemitsos, 1976, NASA SP-389, p. 443

"OSO-8 Observations of Hercules X-l", S. H. Pravdo, R. H. Becker, E. A. Boldt, S. S. Holt, R. E. Rothschild, P. J. Serlemitsos, and J. H. Swank, 1976, "X-ray Binaries", (Y. Kondo and E. Boldt eds.), NASA SP-389, p. 161

"The Early Light Curve of A0620-00", L. J. Kaluzienski, S. S. Holt, E. A. Boldt, and P. J. Serlemitsos, 1976, NASA SP-389, p. 311

"OSO-8 GSFC Results on Cen X-3", J. H. Swank, R. Becker, E. Boldt, S. Holt, S. Pravdo, R. Rothschild, P. J. Serlemitsos, 1976, NASA SP-389, p. 207

"Her X-l Spectral Evidence for a Strong Magnetic Field", E. Boldt, S. Holt, R. Rothschild, P. Serlemitsos, 1976, Workshop "X-ray Binaries", (Y. Kondo and E. Boldt, eds.), NASA SP-389, p. 133

"X-Ray Evidence for Subrelativisitic Cosmic Rays from Supernovae", E. Boldt, 1975, Significant Accomplishments in Science, NASA SP-36l

"X-Ray Astronomy at Goddard: The First Decade", E. A. Boldt, S. S. Holt, R. E. Rothschild, and P. J. Serlemitsos, 1975, GSFC X-6ll-75-122

"What Is Special About Cygnus X-l?", E. Boldt, S. Holt, R. Rothschild, and P. Serlemitsos, 1975, (GSFC X-661-74-323), Proc. of Intl. Conf. on X-rays in Space, Calgary, Canada, p. 69

"The Cosmic X-ray Background", E. Boldt, 1974, Chapter VIII in "High Energy Particles and Quanta in Astrophysics", (eds. F. McDonald and C. Fichtel), MIT Press

"Low Intensity H-Beta Emission from the Interstellar Medium", R. J. Reynolds, F. Roesler, F. Scherb, and E. Boldt, 1973, Proc. Symposium on the Gum Nebula and Related Problems, May l97l, GSFC, NASA SP-332, p. l69

"Cosmic-Ray Effects in the Gum Nebula", R. Ramaty and E. A. Boldt, 1973, Proc. Symposium on the Gum Nebula and Related Problems, May l97l, GSFC (ed. S. P. Maran, J. C. Brandt, and T. P. Stecker), GSFC X-660-7l-243, NASA SP-332, p. 89

"Galactic Magnetic Fields", E.A. Boldt, 1972, American Institute of Physics Handbook (ed. D. Gray) Ch. 5, p. 303, McGraw-Hill

"Non-dispersive Spectroscopy: HEAO X-ray Experiments", E. Boldt, 1972, in X-Ray Astronomy in the Near Future, Proceedings of a Colloquium, Frascati, Italy, European Space Research Organization, (France) ESRO SP-87, p. 163

"Goddard Cosmic X-ray Experiment for OSO-I", E. Boldt , 1972, in X-ray Astronomy in the Near Future, Proceedings of a Colloquium, Frascati, Italy, European Space Research (France) ESRO SP-87, p. 31

"Observed Galactic Hard X-Ray Emission as an Indication for Cosmic Ray Heating of Interstellar HI", E.A. Boldt, 1970, GSFC X-661-70-442

"X-Ray Emission from the Solar Wind", E.A. Boldt, A. Klimas and G. Sandri, 1970, Proc. I.A.U. Symp. #37 (ed. L. Gratton), p. 408, D. Riedel Publishing Co., Holland

"Low Rigidity Cosmic Rays in the Interstellar Medium", V.K. Balasubrahmanyan and E.A. Boldt, 1970, GSFC X-611-70-94

"A Proposal for a Cosmic X-Ray Spectroscopy Experiment Aboard OSO-I", E. A. Boldt, S. S. Holt, P. J. Serlemitsos, 1969, GSFC X-611-69-236

"Cosmic Ray Photons", E. Boldt, 1969, Chapter IV in "Lectures in High Energy Astrophysics" (eds. H. Ogelman and J. Wayland), NASA SP-199, p. 49

"Galactic X-Rays", E. Boldt, 1968, McGraw-Hill Yearbook of Science and Technology (ed. D. Eggenberger), p. 402

"An X-ray Test For Superdense Stars", E. Boldt, 1968, GSFC X-611-68-348

"The Electromagnetic Radiation Associated with the Energy Dissipated by Cosmic Rays in Interstellar Hydrogen", V. K. Balasubrahmanyan, E. Boldt, R.A.R. Palmeira, G. Sandri, 1968, Can. J. of Physics, 46, S633

"A Balloon Borne X-Ray Survey of the Central Region of the Galaxy", E. Boldt, H. Doong, P. Serlemitsos, G. Riegler, 1968, Can. J. of Physics 46, S444

"The Local Supergalaxy as the Structured Aspect of a Universal Background of X-Rays", E. Boldt, 1967, GSFC X-611-67-486

"Do Solar Fare Proton Events Measure Geometry of a Diffusion Process?", E. Boldt, 1964, GSFC X-6ll-64-37l