Possible Infrared Counterparts to the Soft Gamma-Ray Repeater SGR 1806-20

Details Possible Infrared Counterparts to the Soft Gamma-Ray Repeater SGR 1806-20 Possible Infrared Counterparts to the Soft Gamma-Ray Repeater SGR 1806-20

2001-10-29

arxiv.org/abs/astro-ph/0110619v1

Astronomy and Astrophysics

Astrophysics

To appear in Astrophysical Journal Letters ; 12 pages, incl. 3 figures

Scientific paper

10.1086/338360

We report the discovery of possible infrared counterparts to SGR 1806-20. We use archival {\it Chandra} observations to determine the location of SGR 1806-20 to $<1 \arcsec$ accuracy. We then locate 2 infrared objects within this error circle in K-band ($2.2 \mu$m) images of this field. Based on the X-ray absorption towards SGR 1806-20 and the extinction towards the nearby star cluster, we discuss the likelihood of association for the possible counterparts, and the implications for SGR 1806-20's physical properties and origins.

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