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Results from monitoring the broad-line radio galaxy 3C 390.3The broad line radio galaxy 3C 390.3 was observed in a multiwavelength monitoring campaign by the Rosat high resolution imager (HRI), the International Ultraviolet Explorer and ground-based optical, infrared and and radio observations. The preliminary results from the campaign are reported, with emphasis on the X-ray observations. A large amplitude variability is observed. The light curve is dominated by a flare near JD 2449800, characterized by a doubling time scale of 9 days and a general increase in flux after the flare. The optical R and I band light curves show a general increase in flux. Spectra from the Advanced Satellite for Cosmology and Astrophysics (ASCA) obtained before and after the flare can be described by an absorbed power law.
Document ID
19970024673
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Leighly, K, M.
(Institute of Physical and Chemical Research Saitama, Japan)
Dietrich, M.
(Landessternwarte auf dem Koenigstuhl Heidelberg, Germany)
Waltman, E.
(Naval Research Lab. Washington, DC United States)
Edelson, R.
(Iowa Univ. Iowa City, IA United States)
George, I.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Malkan, M.
(California Univ. Los Angeles, CA United States)
Matsuoka, M.
(Institute of Physical and Chemical Research Saitama, Japan)
Mushotzky, R.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Peterson, B. M.
(Ohio State Univ. Columbus, OH United States)
Date Acquired
August 17, 2013
Publication Date
February 1, 1996
Subject Category
Astronomy
Accession Number
97N24430
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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