Anomalous X-ray pulsars and soft gamma-ray repeaters in supernova remnants
Gaensler, B. M.
Original · EN
I consider the state of play regarding associations of supernova remnants (SNRs) with anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs). The three AXP/SNR associations are convincing, and are consistent with AXPs being young, low-velocity neutron stars. The three SGR/SNR associations are far more likely to be chance superpositions, and rely on SGRs being high velocity (>1000 km/s) objects. These results imply either that AXPs evolve into SGRs, or that SGRs and AXPs represent different populations of object.
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