A First Look at the Nuclear Region of M31 with [ITAL]Chandra[/ITAL]
- 1 July 2000
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 537 (1) , L23-L26
- https://doi.org/10.1086/312751
Abstract
We report on the first observation of the nuclear region of M31 with the Chandra X-ray Observatory. The nuclear source seen with the Einstein and ROSAT HRIs is resolved into five point sources. One of these sources is within 1'' of the M31 central super-massive black hole. As compared to the other point sources in M31, this nuclear source has an unusual x-ray spectrum. Based on the spatial coincidence we identify this source with the central black hole, and note that the unusual spectrum is a challenge to current theories. A bright transient is detected ~26'' to the west of the nucleus, which may be associated with a stellar mass black hole.Comment: Submitted to ApJ Letters, 4 pages, 4 figures. email: garcia,ssm,fap,wrf,jem,cjf, @head-cfa.harvard.edKeywords
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