Optical and X-ray Observations of IGR J20187+4041 in the Error Circle of the Variable AGILE Source in Cygnus

Details Optical and X-ray Observations of IGR J20187+4041 in the Error Circle of the Variable AGILE Source in Cygnus Optical and X-ray Observations of IGR J20187+4041 in the Error Circle of the Variable AGILE Source in Cygnus

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1498....1h&link_type=abstract

The Astronomer's Telegram, #1498

Astronomy and Astrophysics

Astronomy

6

Optical, X-Ray, Agn

Scientific paper

With regard to the galaxy 2MASX J20183871+4041003 that was mentioned by Longo et al. (ATel #1492) in connection with a variable AGILE source, I note that this galaxy was first identified with the INTEGRAL source IGR J2018+4043 (=IGR J20187+4041) by Kennea et al. (ATel #788) and Bykov et al. (2006, ApJ, 649, L21) using the Swift XRT. (See also Ajello et al., ATel #1497). While these authors noted the proximity of the unidentified EGRET source 3EG J2020+4017, the galaxy is actually outside the EGRET error box.

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