Spatial, Temporal and Spectral Properties of X-ray Emission from the Magnetar SGR~0501+4516

Abstract

SGR~0501+4516 was discovered with the Swift satellite on 2008 August 22, after it emitted a series of very energetic bursts. Since then, the source was extensively monitored with Swift, the Rossi X-ray Timing Explorer (RXTE) and observed with Chandra and XMM-Newton, providing a wealth of information about its outburst behavior and burst induced changes of its persistent X-ray emission. Here we report the most accurate location of SGR~0501+4516 (with an accuracy of 0.11'') derived with Chandra. Using the combined RXTE, Swift/X-ray Telescope, Chandra and XMM-Newton observations we construct a phase connected timing solution with the longest time baseline (~240 days) to date for the source. We find that the pulse profile of the source is energy dependent and exhibits remarkable variations associated with the SGR~0501+4516 bursting activity. We also find significant spectral evolution (hardening) of the source persistent emission associated with bursts. Finally, we discuss the consequences of the SGR~0501+4516 proximity to the supernova remnant, SNR G160.9+2.6 (HB9).

Accepted for publication in the ApJ

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• Quiescent state and outburst evolution of SGR 0501+4516
• The FAST Galactic Plane Pulsar Snapshot survey: VI. The discovery of 473 new pulsars
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• Learning About the Magnetar Swift J1834.9-0846 from its Wind Nebula
• The Spin-down of Swift J1822.3-1606: A New Galactic Magnetar
• The first observation of optical pulsations from a soft gamma repeater: SGR 0501+4516
• Suzaku Studies of the Supernova Remnant CTB~109 Hosting the Magnetar 1E~2259+586
• Detailed Investigations of the Dimmest Bursts from Two Magnetars, SGR J0501+4516 and SGR J1550-5418
• Long-term evolution of anomalous X-ray pulsars and soft gamma repeaters
• Spectral Comparison of Weak Short Bursts to the Persistent X-rays from the Magnetar 1E 1547.0-5408 in its 2009 Outburst
• New candidates for magnetar counterparts from a deep search with the Hubble Space Telescope
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• X-Ray Observations of Magnetar SGR 0501+4516 from Outburst to Quiescence
• X-ray Perspective of the Twisted Magnetospheres of Magnetars
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• Magnetic field properties of the SNR HB 9