A highly X-ray-variable active galactic nucleus near M101 - A microlensing candidate

Details A highly X-ray-variable active galactic nucleus near M101 - A microlensing candidate A highly X-ray-variable active galactic nucleus near M101 - A microlensing candidate

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356..430t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 356, June 20, 1990, p. 430, 431. Research supported by ASI.

Other

Active Galactic Nuclei, Gravitational Lenses, Spiral Galaxies, X Ray Sources, Emission Spectra, Heao 2, Quasars

Scientific paper

The 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.

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