Can We Observe the SGR to AXP Transition in Real Time?

Details Can We Observe the SGR to AXP Transition in Real Time? Can We Observe the SGR to AXP Transition in Real Time?

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2163w&link_type=abstract

Chandra Proposal ID #08500177

Physics

Chandra Proposal Id #08500177

Scientific paper

Soft Gamma Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs) are both believed to be magnetars powered by the decay of their strong magnetic fields. Within the last 8 years, giant flares have been recorded from two Soft Gamma Repeaters, SGR 1900+14 and SGR 1806-20. During these flares, the external field is significantly altered creating measureable changes in the persistent X-ray flux, energy spectrum and burst activity. These changes point toward a reduction in magnetospheric currents that may hasten the transition from an SGR-like state to an AXP-like state on a time scale of years. Here, we propose to observe each of these SGRs to monitor this transition and constrain the physical impact of giant flares on the underlying X-ray source and probe the flare mechanism itself.

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