Possible Infrared Counterparts to the Soft Gamma-Ray Repeater SGR 1806-20
S. S. Eikenberry, M. A. Garske, D. Hu, M. A. Jackson, S. G. Patel, D. J. Barry, M. R. Colonno, J. R. Houck
Abstract
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 <1 accuracy. We then locate 2 infrared objects within this error circle in K-band (2.2 μm) 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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