The strongest cosmic magnets: soft gamma-ray repeaters and anomalous X-ray pulsars
Abstract:
Two classes of X-ray pulsars, the anomalous X-ray pulsars and the soft gamma-ray repeaters, have been recognized in the last decade as the most promising candidates for being magnetars: isolated neutron stars powered by magnetic energy. I review the observational properties of these objects, focussing on the most recent results, and their interpretation in the magnetar model. Alternative explanations, in particular those based on accretion from residual disks, are also considered. The possible relations between these sources and other classes of neutron stars and astrophysical objects are also discussed.read more
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A new investigation of the possible X-ray counterparts of the magnetar candidate AX J1845−0258
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TL;DR: In this article, a new investigation of all the X-ray sources in the ASCA error region of AX J1845-0258, using archival data obtained with Chandra in 2007 and 2010, and with XMM-Newton in 2010.
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Phase Drifts of Sub-pulses during the 2004 Giant Flare of SGR 1806-20 and Settling of the Magnetic Fields
TL;DR: In this paper, the phase evolution of the sub-pulses identified in the X-ray waveform was studied and it was shown that the subpulsus varied in phase with time and then gradually settled, which might indicate drifts of the emission regions in relative to the neutron star surface.
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Vacuum Polarization and Photon Propagation in an Electromagnetic Plane Wave
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Search for High-Energy Gamma-ray Emission from Anomalous X-ray Pulsar, 4U 0142+61
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TL;DR: In this paper, the authors investigated the high-energy gamma-ray properties of the brightest anomalous X-ray pulsar 4U 0142+61 using data collected with the Large Area Telescope (LAT) on board Fermi Gamma-ray Space Telescope to establish the spectral behavior of the source on a very broad energy span and search for pulsed emission.
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SGR 0418+5729: a small inclination angle resulting in a not so low dipole magnetic field?
TL;DR: In this paper, the pulsar spin down model of Contopoulos & Spitkovsky was applied to SGR 418+5729 and it was shown that SGR 0418+ 5729 lies below the pulsars death line and its rotation-powered magnetospheric activities may therefore have stopped.
References
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