Optical counterpart to SAX J1818.6-1703

Details Optical counterpart to SAX J1818.6-1703 Optical counterpart to SAX J1818.6-1703

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..831....1n&link_type=abstract

The Astronomer's Telegram, #831

Astronomy and Astrophysics

Astronomy

15

Infra-Red, Optical, X-Ray, Binaries, Transients

Scientific paper

The recurrent hard X-ray transient SAX J1818.6-1703 has been observed by several satellites. It displays strong very short flares (Grebenev & Sunyaev 2005, Ast. Lett. 31, 672; Sguera et al. 2005, A&A 444, 221), similar to those from the well described Supergiant Fast X-ray Transients XTE J1739-302 (Smith et al. 2006, ApJ 638, 982) and IGR J17544-2619 (Pellizza et al. 2006, astro-ph/0605559). Motivated by the similarity to known SFXTs, we searched archival (2MASS, DENIS, USNO) data of its error circle for objects that could be early type stars.

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