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相关论文: "High-field" pulsars torqued by accretion disk?

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We examined the fall-back disk models, and in general accretion, proposed to explain the properties of anomalous X-ray pulsars (AXPs), soft gamma repeaters (SGRs), and radio pulsars (PSRs). We checked the possibility of some gas remaining…

天体物理学 · 物理学 2009-11-07 S. O. Tagieva , E. Yazgan , A. Ankay

Anomalous X-ray Pulsars and Soft Gamma-Ray Repeaters have been generally recognized as neutron stars with super strong magnetic fields, namely "magnetars". The "magnetars" manifest that the luminosity in X-ray band are larger than the…

高能天体物理现象 · 物理学 2010-05-24 G. J. Qiao , R. X. Xu , Y. J. Du

The Anomalous X-ray Pulsars (AXPs) and Soft Gamma-ray Repeaters (SGRs) are a class of pulsars understood as neutron stars (NSs) with super strong surface magnetic fields, namely $B\gtrsim10^{14}$ G, and for that reason are known as…

高能天体物理现象 · 物理学 2016-08-09 Ronaldo V. Lobato , Manuel Malheiro , Jaziel G. Coelho

Several observations obtained in the last few years indicate that Soft Gamma-ray Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs) are basically a single class of isolated neutron stars. Their properties are well explained by the magnetar…

高能天体物理现象 · 物理学 2009-05-01 Sandro Mereghetti

Anomalous X-ray Pulsars (AXPs) are a class of rare X-ray pulsars whose energy source has been perplexing for some 20 years. Unlike other, better understood X-ray pulsars, AXPs cannot be powered by rotation or by accretion from a binary…

天体物理学 · 物理学 2009-11-07 F. P. Gavriil , V. M. Kaspi , P. M. Woods

Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are enigmatic pulsar-like objects. The energy budget is the fundamental problem in their studies. In the magnetar model, they are supposed to be powered by the extremely…

高能天体物理现象 · 物理学 2015-05-30 H. Tong , R. X. Xu

SGRs/AXPs are considered a subclass of pulsars powered by magnetic energy and not by rotation, as normal radio pulsars. They are understood as strongly magnetized neutron star, with large periods of rotation $P\sim(2-12)$ s, and large…

太阳与恒星天体物理 · 物理学 2013-08-01 J. G. Coelho , M. Malheiro

Soft gamma-ray repeaters (SGRs) and anomalous x-ray pulsars (AXPs) are young and radio-quiet x-ray pulsars which have been rapidly spun-down to slow spin periods clustered in the range 5-12 s. Most of these unusual pulsars also appear to be…

天体物理学 · 物理学 2015-06-24 D. Marsden , R. E. Lingenfelter , R. E. Rothschild , J. C. Higdon

Some of the most interesting types of astrophysical objects that have been intensively studied in the recent years are the Anomalous X-ray Pulsars (AXPs) and Soft Gamma-ray Repeaters (SGRs) seen usually as neutron stars pulsars with super…

太阳与恒星天体物理 · 物理学 2012-10-11 J. G. Coelho , M. Malheiro

Recent measurements of the spin-down rates of soft gamma ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) have been interpreted as evidence that these objects are ``magnetars'': neutron stars spinning down by magnetic dipole…

天体物理学 · 物理学 2007-05-23 Arnon Dar , Alvaro DeRújula

The emission of Anomalous X-ray Pulsars (AXPs) and Soft Gamma-Ray Repeaters (SGRs) is believed to be powered by the dissipation of their strong magnetic fields, which coined the name `magnetar'. By combining timing and energy observational…

高能天体物理现象 · 物理学 2024-08-20 Guojun Qiao , Lunhua Shang , Renxin Xu , Kejia Lee , Yongquan Xue , Qijun Zhi , Jiguang Lu , Juntao Bai

PSRs J1847-0130 and J1718-37184 have inferred surface dipole magnetic fields greater than those of any other known pulsars and well above the ``quantum critical field'' above which some models predict radio emission should not occur.These…

The nature of the 5-12 s "anomalous" X-ray pulsars remains a mystery. Among the models that have been proposed to explain the properties of AXPs, the most likely ones are: (1) isolated accreting neutron stars evolved from the…

天体物理学 · 物理学 2009-10-31 X. -D. Li

The magnetar model and a solid quark star model for anomalous X-ray pulsars/soft gamma-ray repeaters (AXPs/SGRs) are discussed. Different manifestations of pulsar-like stars are speculated to be due to both their nature (e.g., mass and…

天体物理学 · 物理学 2008-11-26 Renxin Xu

Developments over the last couple of years have supported the interpretation that anomalous X-ray pulsars (AXPs) and soft gamma repeaters (SGRs) possess unusually high magnetic fields, and furthermore may represent a class or classes of…

天体物理学 · 物理学 2007-05-23 Matthew G. Baring , Alice K. Harding

Anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are magnetar candidates, i.e., neutron stars powered by strong magnetic field. If they are indeed magnetars, they will emit high-energy gamma-rays which are detectable by…

高能天体物理现象 · 物理学 2015-05-27 H. Tong , L. M. Song , R. X. Xu

SGRs/AXPs are assumed to be a class of neutron stars (NS) powered by magnetic energy and not by rotation, as normal radio pulsars. However, the recent discovery of radio-pulsed emission in four of this class of sources, where the spin-down…

太阳与恒星天体物理 · 物理学 2013-04-09 J. G. Coelho , M. Malheiro

Soft Gamma-ray Repeaters (SGRs) are among the most enigmatic sources known today. Exhibiting huge X- and Gamma-ray bursts and flares, as well as soft quiescent X-ray emission, their energy source remains a mystery. Just as mysterious are…

Soft gamma repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are two groups of enigmatic objects, which have been extensively investigated in past few decades. Based on the ample information about their timing behaviors, spectra, and…

高能天体物理现象 · 物理学 2014-12-10 J. Wang , H. -K. Chang

Important constraints on the properties of the Anomalous X-ray Pulsars (AXPs) and Soft Gamma-Ray Repeaters (SGRs) can be provided by their associations with supernova remnants (SNRs). We have made a radio search for SNRs towards the AXPs RX…

天体物理学 · 物理学 2009-10-19 B. M. Gaensler , P. O. Slane , E. V. Gotthelf , G. Vasisht
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