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The continuous spectrum of Markarian 421 during periods of X-ray satellite observationsNew UBVRI photometry of Mrk 421 obtained during periods of X-ray satellite observations are presented. An X-ray light curve for 1977 November from the HEAO A-1 experiment is also given. The decomposition of the UBVR fluxes into a compact nonthermal component and an extended galactic component shows that there are coordinated variations in the optical nonthermal and X-ray emission. The data are consistent with the hypothesis that the mini-BL Lac object is emitting by the synchrontron-self-Compton process. The host galaxy of this composite source has properties like those of a giant elliptical.
Document ID
19810029928
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/158319
Authors
Mufson, S. L. (Naval Research Lab. Washington, DC, United States)
Wood, K. (Naval Research Lab. Washington, DC, United States)
Mcnutt, D. P. (Naval Research Lab. Washington, DC, United States)
Yentis, D. J. (Naval Research Lab. Washington, DC, United States)
Meekins, J. F. (Naval Research Lab. Washington, DC, United States)
Byram, E. T. (Naval Research Lab. Washington, DC, United States)
Chubb, T. A. (Naval Research Lab. Washington, DC, United States)
Friedman, H. (U.S. Navy, Naval Research Laboratory, Washington D.C., United States)
Wisniewski, W. Z. (Naval Research Lab. Washington, DC, United States)
Date Acquired
August 11, 2013
Publication Date
October 1, 1980
Publication Information
Publication: Astrophysical Journal
Subject Category
Astrophysics
Accession Number
81A14332
Funding Number(s)
CONTRACT_GRANT: NAS8-33087
Distribution Limits
Public
Copyright
Other

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