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相关论文: Rotational and X-ray luminosity evolution of high-…

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We have investigated the long-term evolutions of the high-magnetic field radio pulsars (HBRPs) with measured braking indices in the same model that was applied earlier to individual anomalous X-ray pulsars (AXPs), soft gamma repeaters…

高能天体物理现象 · 物理学 2017-08-16 Onur Benli , Unal Ertan

We have investigated the long-term evolution of individual anomalous X-ray pulsars (AXPs) and soft gamma repeaters (SGRs) with relatively well constrained X-ray luminosity and rotational properties. In the frame of the fallback disc model,…

高能天体物理现象 · 物理学 2016-01-29 Onur Benli , Unal Ertan

We have investigated the evolutionary connections of the isolated neutron star (NS) populations including radio pulsars (RPs), anomalous X-ray pulsars (AXPs), soft gamma repeaters (SGRs), dim isolated NSs (XDINs), ``high-magnetic-field''…

高能天体物理现象 · 物理学 2024-09-19 Ali Arda Gencali , Unal Ertan

Recent measurements showed that the period derivative of the 'high-B' radio pulsar PSR J1734-3333 is increasing with time. For neutron stars evolving with fallback disks, this rotational behavior is expected in certain phases of the…

高能天体物理现象 · 物理学 2015-06-12 S. Caliskan , U. Ertan , M. A. Alpar , J. E. Truemper , N. D. Kylafis

The dim isolated neutron stars (XDINs) have periods in the same range as the anomalous X-ray pulsars (AXPs) and the soft gamma-ray repeaters (SGRs). We apply the fallback disk model, which explains the period clustering and other properties…

高能天体物理现象 · 物理学 2015-06-22 U. Ertan , S. Caliskan , O. Benli , M. A. Alpar

Investigation of the long-term evolution of rotating radio transients (RRATs) is important to understand the evolutionary connections between the isolated neutron star populations in a single picture. The X-ray luminosities of RRATs (except…

高能天体物理现象 · 物理学 2020-11-11 Ali Arda Gencali , Unal Ertan

We show that the period clustering of anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), their X-ray luminosities, ages and statistics can be explained with fallback disks with large initial specific angular momentum. The…

高能天体物理现象 · 物理学 2015-05-13 U. Ertan , K. Y. Eksi , M. H. Erkut , M. A. Alpar

There exists a special class of X-ray pulsars that exhibit very slow pulsation of $P_{\rm spin}>1000$ s in the high mass X-ray binaries (HMXBs). We have studied the temporal and spectral properties of these superslow pulsation neutron star…

高能天体物理现象 · 物理学 2015-06-12 W. Wang

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

We have investigated the relation between the orbital periods ($\pb$) and the spin periods ($\ps$) of wind-fed X-ray pulsars in high-mass X-ray binaries (HMXBs), based on population synthesis calculations of the spin evolution of neutron…

天体物理学 · 物理学 2008-11-26 Hai-Lang Dai , Xi-Wei Liu , Xiang-Dong Li

We have analyzed the long-term evolution and the X-ray outburst light curve of SGR 0501+4516 in the frame of the fallback disc model. We have shown that the X-ray luminosity, period and period derivative of this typical soft gamma repeater…

高能天体物理现象 · 物理学 2015-01-13 O. Benli , S. Caliskan , U. Ertan

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

The Parkes Multibeam Survey led to the identification of a number of long-period radio pulsars with magnetic field well above the 'quantum critical field' of ~ 4.4x10^13 G (HBRPs). The HBRPs have similar spin parameters to magnetars, but…

天体物理学 · 物理学 2007-05-23 N. Vranevsevic , R. N. Manchester , D. B. Melrose

The rotational properties and X-ray luminosity of PSR J0726-2612 are close to those of dim isolated neutron stars (XDINs). It was proposed that the source could be the first XDIN with observable pulsed radio emission. We have investigated…

高能天体物理现象 · 物理学 2020-09-09 Seyda Ozcan , Ali Arda Gencali , Unal Ertan

Spin evolution of X-ray pulsars in High Mass X-ray Binaries (HMXBs) is discussed under various assumptions about the geometry and physical parameters of the accretion flow. The torque applied to the neutron star from the accretion flow and…

高能天体物理现象 · 物理学 2014-07-28 N. R. Ikhsanov , Yu. S. Likh , N. G. Beskrovnaya

The observed X-ray pulse period of OB-type high-mass X-ray binary (HMXB) pulsars are typically longer than 100 seconds. It is considered that the interaction between the strong magnetic field of neutron star and the wind matter could cause…

高能天体物理现象 · 物理学 2020-09-30 Shigeyuki Karino

At present, J1819-1458 is the only rotating radio transient (RRAT) detected in X-rays. We have studied the long-term evolution of this source in the fallback disc model. The model can reproduce the period, period derivative and X-ray…

高能天体物理现象 · 物理学 2018-08-27 Ali Arda Gencali , Unal Ertan

Observations using the Rossi X-ray Timing Explorer have discovered dozens of accreting neutron stars with millisecond spin periods in low-mass binary star systems. Eighteen are millisecond X-ray pulsars powered by accretion or nuclear…

天体物理学 · 物理学 2009-11-11 Frederick K. Lamb

The study of high-magnetic-field pulsars is important for examining the relationships between radio pulsars, magnetars, and X-ray-isolated neutron stars (XINSs). Here we report on X-ray observations of three such high-magnetic-field radio…

Soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are slowly rotating, isolated neutron stars that sporadically undergo episodes of long-term flux enhancement (outbursts) generally accompanied by the emission of short…

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