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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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Journal ArticleDOI

Implications of the Narrow Period Distribution of Anomalous X-ray Pulsars and Soft Gamma-Ray Repeaters

TL;DR: In this article, the authors used a point likelihood technique to assess the constraints this clustering imposes on the birth period and on the final period of anomalous X-ray Pulsars and Soft Gamma-ray Repeaters.
Journal ArticleDOI

Long-term XMM-Newton view of magnetar CXOU J010043.1-721134: comprehensive spectral and temporal results

TL;DR: In this article, the anomalous X-ray Pulsar CXOU J010043 has been classified as a magnetar and its spin period was found to be 8.0275(1) s as of December 2016 and calculated the period derivative to be $(1.76\pm 0.02) \times 10^{-11}$ s s s$^{-1}$, which translates to a dipolar magnetic field strength of $3.8\times 10−14}$ G and characteristic age of $sim 7200$ yr for the magnet

Models of magnetized neutron stars atmospheres

TL;DR: In this paper, a computer code for modeling magnetized neutron star atmospheres in a wide range of magnetic fields (10 12 10 15 G) and effective temperatures (3×10 5 10 7 K) is presented.
Journal ArticleDOI

Nucleon-nucleon scattering in a strong external magnetic field and the neutrino emissivity

TL;DR: In this paper, the authors considered the one-pion exchange approximation to find the nucleon-nucleon (NN) cross section in a background field as large as 10{sup 15}-10{sup 18} G. They showed that the NN cross section of neutron stars with temperatures in the range 0.1-5 MeV can be changed up to the 1 order of magnitude with respect to the one in the absence of the magnetic field.
References
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Book

Compact Stellar X-ray Sources

TL;DR: A decade of X-ray sources and their evolution is described in this paper, with a focus on the formation and evolution of super-soft sources and the formation of compact stellar sources.
Journal ArticleDOI

Formation of very strongly magnetized neutron stars - Implications for gamma-ray bursts

TL;DR: In this article, it is argued that a convective dynamo can also generate a very strong dipole field after the merger of a neutron star binary, but only if the merged star survives for as long as about 10-100 ms.
Journal ArticleDOI

The Soft Gamma Repeaters as Very Strongly Magnetized Neutron Stars. II. Quiescent Neutrino, X-Ray, and Alfvén Wave Emission

TL;DR: In this article, the decay rate of the core field is a very strong function of temperature and therefore of the magnetic flux density, which is not present in the decay of the weaker fields associated with ordinary radio pulsars.
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