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A highly X-ray-variable active galactic nucleus near M101 - A microlensing candidateThe X-ray selected active galaxy 1E 1403 + 5439 has been found to increase its X-ray flux by a factor 5.5 + or - 1.9 over an interval of 161 days. No other X-ray selected emission line active galaxy has been observed to vary by such a large factor. The X-ray source 1E 1403 + 5439 lies about 18 arcmin from the center of the large spiral galaxy M101. This proximity suggests that gravitational microlensing may be responsible for the extraordinary variability of this active galaxy.
Document ID
19900050204
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/168850
Authors
Trinchieri, G. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Fabbiano, G. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Elvis, Martin (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
June 20, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 356
ISSN: 0004-637X
Subject Category
Astrophysics
Report/Patent Number
ISSN: 0004-637X
Accession Number
90A37259
Funding Number(s)
CONTRACT_GRANT: NAS8-30751
Distribution Limits
Public
Copyright
Other

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