Identification of a supernova remnant coincident with the soft gamma-ray repeater SGR1806-20

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photography, Gamma Ray Bursts, Magellanic Clouds, Radio Astronomy, Supernova Remnants, Nebulae, Pulsars

Scientific paper

It is shown here that the well-localized soft gamma-ray repeater (SGR) SGR1806-20 coincides with an SNR: the amorphous radio nebula G10.0-0.3. Together with the coincident of SGR0526-66 with the SNR N49, this argues strongly in favor of a neutron-star origin for SGRs. It is suggested that all young pulsars pass through a brief phase of SGR activity. The detection of pulsar-powered synchrotron nebulae in, or pulsations from, the two SNRs coincident with SGRs would confirm this model.

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