Chandra observation of SAX J1818.6-1703: confirmation of optical counterpart & suggestion of non-transient nature

Details Chandra observation of SAX J1818.6-1703: confirmation of optical counterpart & suggestion of non-transient nature Chandra observation of SAX J1818.6-1703: confirmation of optical counterpart & suggestion of non-transient nature

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..915....1i&link_type=abstract

The Astronomer's Telegram, #915

Astronomy and Astrophysics

Astronomy

13

X-Ray, Binaries, Transients

Scientific paper

SAX J1818.6-1703, discovered in 1998 with the BeppoSAX Wide Field Cameras (in 't Zand et al. 1998, IAUC #6840), was found with INTEGRAL and RXTE to exhibit few-hours long outbursts similar to the Supergiant Fast X- ray Transients (Grebenev & Sunyaev 2005, AstL 31, 672; Sguera et al. 2005, A&A 444, 221). Negueruela & Smith (2006; ATel #831), on the basis of this analogy, identified within the 1.5 arcmin radius error region determined by Grebenev & Sunyaev a likely optical/NIR counterpart whose I-band spectrum is typical for an OB supergiant.

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