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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

Too much "pasta" for pulsars to spin down

TL;DR: In this article, the authors show that a highly resistive layer in the innermost part of the crust of neutron stars naturally limits the spin period to a maximum value of about 10-20 s. This high resistivity is one of the expected properties of the nuclear pasta phase.
Journal ArticleDOI

Search for gravitational-wave bursts from soft gamma repeaters

B. P. Abbott, +453 more
TL;DR: In this article, a LIGO search for short-duration gravitational waves (GWs) associated with soft gamma ray repeater (SGR) bursts is presented, which is the first search sensitive to neutron star f modes, usually considered the most efficient GW emitting modes.
Journal ArticleDOI

RXTE Monitoring of the Anomalous X-ray Pulsar 1E 1048.1-5937: Long-Term Variability and the 2007 March Event

TL;DR: In this paper, a detailed study of the evolution of the timing properties, the pulsed flux, and the pulse profile of anomalous X-ray Pulsar 1E 1048.1-5937 was presented.
Journal ArticleDOI

The fundamental plane for radio magnetars

TL;DR: In this paper, it was shown that radio emission from magnetars might be powered by rotational energy, similarly to what occurs in normal radio pulsars, and that magnetar radio activity or inactivity can be predicted from the knowledge of the star's rotational period, its time derivative, and the quiescent X-ray luminosity.
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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