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Observations of active galaxiesNew information obtained by the EXOSAT satellite on the nature of the X-ray variability in AGNs is discussed. From the EXOSAT data, it is seen that many more AGNs vary on short timescales; in some cases, the character of the time variability is quantitatively and qualitatively different than expected from the flare model of the variability. Data on the two active galaxies NGC5506 and NGC4051, which exemplify these findings, are discussed.
Document ID
19870047502
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1038/325666a0
Authors
Mushotzky, Richard (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
February 19, 1987
Publication Information
Publication: Nature
Volume: 325
ISSN: 0028-0836
Subject Category
Astrophysics
Report/Patent Number
ISSN: 0028-0836
Accession Number
87A34776
Distribution Limits
Public
Copyright
Other

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