Temporal and spectral evolution in X- and gamma-rays of magnetar 1E 1547.0-5408 since its October 2008 outburst: the discovery of a transient hard pulsed component after its January 2009 outburst

Abstract

The magnetar 1E 1547.0-5408 exhibited outbursts in October 2008 and January 2009. In this paper we present in great detail the evolution of the temporal and spectral characteristics of the persistent total and pulsed emission of 1E 1547.0-5408 between ~1 and 300 keV starting in October 3, 2008, and ending in January 2011. We analyzed data collected with the Rossi X-ray Timing Explorer, the International Gamma-Ray Astrophysics Laboratory and the Swift satellite.

33 pages, 14 figures of which 3 in color, accepted by ApJ on Jan 26, 2012

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• Evolution of the X-ray Properties of the Transient Magnetar XTE J1810-197
• Discovery of a 36 ks Phase Modulation in the Hard X-ray Pulses from the Magnetar 1E 1547.0$-$5408
• A NuSTAR confirmation of the 36 ks hard X-ray pulse-phase modulation in the magnetar 1E 1547.0$-$5408
• Detailed Investigations of the Dimmest Bursts from Two Magnetars, SGR J0501+4516 and SGR J1550-5418
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• A NuSTAR study of the 55 ks hard X-ray pulse-phase modulation in the magnetar 4U 0142+61
• The long-term enhanced brightness of the magnetar 1E 1547.0-5408
• Spectral formation in a radiative shock: application to anomalous X-ray pulsars and soft gamma-ray repeaters
• The INTEGRAL view of the pulsating hard X-ray sky: from accreting and transitional millisecond pulsars to rotation-powered pulsars and magnetars
• Pulse Frequency Fluctuations of Magnetars
• The effect of X-ray dust-scattering on a bright burst from the magnetar 1E 1547.0-5408
• High Frequency Radio Observations of Two Magnetars, PSR J1622$-$4950 and 1E 1547.0$-$5408
• A NICER View on the 2020 Magnetar-Like Outburst of PSR J1846-0258
• Broadband X-ray Spectral Investigations of Magnetars, 4U 0142+61, 1E 1841-045, 1E 2259+586, and 1E 1048.1-5937
• X-ray Perspective of the Twisted Magnetospheres of Magnetars
• On the connection between radiative outbursts and timing irregularities in magnetars
• Hard X-ray emission cutoff in anomalous X-ray pulsar 4U 0142+61 detected by INTEGRAL
• Variation of Spectral and Timing Properties in the Extended Burst Tails from the Magnetar 4U 0142+61
• Burst Tails from SGR J1550-5418 Observed with Rossi X-ray Timing Explorer
• Pulsed γ-ray emission from magnetar 1E 2259+586