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There are a total of 15 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Rapid X-ray and optical flares from Scorpius X-1
Author(s): Petro, L. D.; Bradt, H. V.; Kelley, R. L.; Horne, K.; Gomer, R.
Abstract: A 1 second time structure in X-ray flares from Sco X-1 and simultaneous optical flares with time structures no faster than 20 s are reported. The shortest reported time scale in the X-ray emission from Sco X-1 is decreased ...
NASA Center: NASA (non Center Specific)
Publication Year: 1981
Added to NTRS: 2004-11-03
Accession Number: 82A19419; Document ID: 19820035884
Echo Mapping of Active Galactic Nuclei
Author(s): Peterson, B. M.; Horne, K.
Abstract: Echo mapping makes use of the intrinsic variability of the continuum source in active galactic nuclei to map out the distribution and kinematics of line-emitting gas from its light travel time-delayed response to continuum ...
NASA Center: Goddard Space Flight Center
Publication Year: 2004
Added to NTRS: 2004-11-03
Document ID: 20040052871
The correlated X-ray and optical time variability of TT Arietis
Author(s): Jensen, K. A.; Middleditch, J.; Grauer, A. D.; Horne, K.; Gomer, R.; Cordova, F. A.; Mason, K. O.
Abstract: The results of Einstein X-ray observation and simultaneous optical observations of the cataclysmic variable TT Arietis extending over several binary orbits are reported. Evidence is found for correlations between the X-ray ...
NASA Center: NASA (non Center Specific)
Publication Year: 1983
Added to NTRS: 2004-11-03
Accession Number: 83A37920; Document ID: 19830056702
Kronos: A Satellite for Astrotomography
Author(s): Peterson, B. M.; Polidan, R. S.; Horne, K.
Abstract: Kronos, a Medium Explorer concept, is designed to initiate a new era in astrophysics, fully opening the domain of time by enabling extended simultaneous multiwavelength (X-ray, UV, and optical) spectroscopic monitoring of ...
NASA Center: Goddard Space Flight Center
Publication Year: 2004
Added to NTRS: 2004-11-03
Document ID: 20040053263
Anisotropic line emission and the geometry of the broad-line region in active galactic nuclei
Author(s): Ferland, G. J.; Peterson, B. M.; Horne, K.; Welsh, W. F.; Nahar, S. N.
Abstract: Attention is given to an escape probability-based formalism, including the interaction with a background opacity, which is used to predict line-beaming factors for broad-line region (BLR) clouds of AGN. Several computational ...
NASA Center: Goddard Space Flight Center
Publication Year: 1992
Added to NTRS: 2004-11-03
Accession Number: 92A27159; Document ID: 19920044535
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