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Open AccessJournal ArticleDOI

The strongest cosmic magnets: soft gamma-ray repeaters and anomalous X-ray pulsars

Sandro Mereghetti
- 08 Jul 2008 - 
- Vol. 15, Iss: 4, pp 225-287
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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Citations
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The mcgill magnetar catalog

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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Bright Supernovae from Magnetar Birth

TL;DR: In this paper, a rotating magnetar radiating according to the classic dipole formula could power a very luminous supernova and the peak luminosity would be most sensitive to the dipole field strength of the magnetar.
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The Astrophysics of Ultrahigh-Energy Cosmic Rays

TL;DR: In this paper, the main effects of propagation from cosmologically distant sources, including interactions with cosmic background radiation and magnetic fields, are discussed, leading to a survey of candidate sources and their signatures.
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The McGill Magnetar Catalog

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.
Journal ArticleDOI

Unifying the observational diversity of isolated neutron stars via magneto-thermal evolution models.

TL;DR: In this article, the authors present the results of 2D simulations of the fully-coupled evolution of temperature and magnetic field in neutron stars, including the state-of-the-art kinetic coefficients and, for the first time, the important effect of the Hall term.
References
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Journal ArticleDOI

A XMM-Newton View of the Soft Gamma-ray Repeater SGR 1806--20: Long Term Variability in the pre-Super Giant Flare Epoch

TL;DR: In this paper, the low energy X-ray emission of the Soft Gamma-ray Repeater SGR1806-20 has been studied by means of four XMM-Newton observations carried out in the last two years, the latter performed in response to a strong sequence of hard Xray bursts observed on 2004 October 5.

Atmospheres and Spectra of Strongly Magnetized Neutron Stars

TL;DR: In this article, an atmosphere model for strongly magnetized neutron stars with surface fields B � 10 12 10 15 G and effective temperatures Teff � 10 6 10 7 K was constructed.
Journal ArticleDOI

Precise Timing of the X-ray Pulsar 1E 1207.4–5209: A Steady Neutron Star Weakly Magnetized at Birth

TL;DR: In this paper, the authors analyzed all X-ray timing data on 1E 1207.4-5209 in supernova remnant PKS 1209-51/52 gathered from 1993-2005 and found a highly stable rotation with P = 424.130749(4) ms and = (6.6 ± 9.0) × 10-17 (1 σ errors).
Journal ArticleDOI

New Evidence of Proton-Cyclotron Resonance in a Magnetar Strength Field from SGR 1806–20

TL;DR: In this article, the authors present the detection of a 5 keV absorption feature in a variety of bursts from the Soft Gamma Repeater SGR 1806-20, confirming their initial discovery and establishing the presence of the feature in the source's burst spectra.
Journal ArticleDOI

On the Spin History of the X-Ray Pulsar in Kes 73: Further Evidence for an Ultramagnetized Neutron Star

TL;DR: In this article, the authors presented a spin chronology of the pulsar using additional Ginga, ASCA, RXTE, and BeppoSAX data sets spanning over a decade.
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