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

2001; IOP Publishing; Volume: 563; Issue: 2 Linguagem: Inglês

10.1086/338360

1538-4357

S. S. Eikenberry, M. A. Garske, D. Hu, M. A. Jackson, Shannon G. Patel, D. J. Barry, Michael Colonno, J. R. Houck,

Astrophysical Phenomena and Observations

We report the discovery of possible infrared counterparts to SGR 1806-20. We use archival Chandra observations to determine the location of SGR 1806-20 to less than 1'' accuracy. We then locate two infrared objects within this error circle in K-band (2.2 μm) images of this field. Based on the X-ray absorption toward SGR 1806-20 and the extinction toward 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.