Infrared observations of soft gamma repeaters.

Astronomy and Astrophysics – Astrophysics

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Gamma Rays: Bursts, Circumstellar Matter, Supernova Remnants, Infrared: Ism: Continuum

Scientific paper

We have made IRAS (12, 25, and 60μm) maximum entropy images of the three known soft gamma repeaters SGR 0526-66, SGR 1806-20, and SGR 1900+14. In addition we have obtained a high-resolution 10μm image of SGR 1900+14 using TIMMI at the ESO 3.6m telescope. All three SGRs have associated with them an infrared source. The infrared emission associated with SGR 0526-66 likely originates from heated dust in the supernova remnant N49. The infrared properties of the two galactic SGRs are similar; both are unresolved at 12 and 25μm, and extended at 60μm. The relation of these infrared sources (if any) to the SGRs is as yet unclear.

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