SGR 1806 20 about two years after the giant flare: Suzaku, XMM-Newton and INTEGRAL observations
Paolo Esposito,Paolo Esposito,Sandro Mereghetti,Andrea Tiengo,Silvia Zane,Roberto Turolla,Roberto Turolla,Diego Götz,Nanda Rea,Nanda Rea,Nobuyuki Kawai,Masaru Ueno,G. L. Israel,Luigi Stella,Marco Feroci +14 more
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In this article, the results of the first Suzaku observation of SGR 1806-20, together with almost simultaneous observations with XMM-Newton and INTEGRAL, were presented.Abstract:
In December 2004, the soft gamma-ray repeater SGR 1806-20 emitted the most powerful giant flare ever observed. This probably involved a large-scale rearrangement of the magnetosphere leading to observable variations in the properties of its X-ray emission. Here we present the results of the first Suzaku observation of SGR 1806-20, together with almost simultaneous observations with XMM-Newton and INTEGRAL. The source seems to have reached a state characterized by a flux close to the pre-flare level and by a relatively soft spectrum. Despite this, SGR 1806-20 also remained quite active after the giant flare, allowing us to study several short bursts observed by Suzaku in the 1-100 keV range. We discuss the broad-band spectral properties of SGR 1806-20, covering both persistent and bursting emission, in the context of the magnetar model, and consider its recent theoretical developments.read more
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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.
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The McGill Magnetar Catalog
S. A. Olausen,Victoria M. Kaspi +1 more
TL;DR: In this paper, the authors present a catalog of the 26 currently known magnetars and magnetar candidates, and investigate and plot possible correlations between their timing, X-ray, and multiwavelength properties.
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Magnetar outbursts: an observational review
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TL;DR: In this article, the authors review the latest observational results on the multiband emission of magnetars, and summarize one by one all the transient events which could be studied to date from these sources.
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Systematic study of magnetar outbursts
TL;DR: This work is supported by grants AYA2015-71042-P and SGR2014-1073 and by the Netherlands Organization for Scientific Research (NWO) Vidi award (PI: N. Rea).
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The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
TL;DR: The EPIC focal plane imaging spectrometers on XMM-Newton use CCDs to record the images and spectra of celestial X-ray sources focused by the three Xray mirrors as discussed by the authors.