astro.wikisort.org - Science

SGR 0501+4516 is a soft gamma repeater (SGR), and is an ancient stellar remnant. Currently, the phenomenons of SGRs and the related Anomalous X-ray pulsars (AXP) are explained as arising from magnetars. SGR 0501+4516 is located approximately 15,000 light years from Earth and has a magnetic field 100 trillion times stronger than the Earth's.[1]

SGR 0501+4516 is remarkable in that it has been the first SGR to have been discovered after ten years without SGR detections.[2] It has been suggested that SGR 0501+4516, together with 1E 1547.0-5408, should be considered as tools for a final unification of SGRs, AXPs and the “transient AXPs (TAXPs)” into a single class of “magnetars candidates”.[2]

Discovery

Its existence was reported on Aug. 22, 2008, by NASA's Swift satellite, which reported numerous blasts of radiation from the object. The eruptions were subsequently studied in-depth using the European Space Agency's XMM-Newton and International Gamma-Ray Astrophysics Laboratory (INTEGRAL) satellites.[1] The object had been serendipitously observed before in 1992 by ROSAT.[2]

References

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