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There has recently been a large increase in the number of known eclipsing radio millisecond pulsars in the Galactic field, many of which are associated with Fermi gamma-ray sources. All are in tight binaries (P_b < 24hr) many of which are…

We present the discovery of a new optical/X-ray source likely associated with the Fermi $\gamma$-ray source 4FGL J1408.6-2917. Its high-amplitude periodic optical variability, large spectroscopic radial velocity semi-amplitude, evidence for…

高能天体物理现象 · 物理学 2023-01-04 Samuel J. Swihart , Jay Strader , Laura Chomiuk , Elias Aydi , Kirill V. Sokolovsky , Paul S. Ray , Matthew Kerr

Eclipsing millisecond pulsars in close ($P_b < 1$~day) binary systems provide a different view of pulsar winds and shocks than do isolated pulsars. Since 2009, the numbers of these systems known in the Galactic field has increased…

The population of millisecond pulsars (MSPs) has been expanded considerably in the last decade. Not only is their number increasing, but also various classes of them have been revealed. Among different classes of MSPs, the behaviour of…

高能天体物理现象 · 物理学 2019-12-17 C. Y. Hui , K. L. Li

In the last few years, over 43 millisecond radio pulsars have been discovered by targeted searches of unidentified gamma-ray sources found by the Fermi Gamma-Ray Space Telescope. A large fraction of these millisecond pulsars are in compact…

Black widow and redback systems are compact binaries in which a millisecond pulsar heats and may even ablate its low-mass companion by its intense wind of relativistic particles and radiation. In such systems, an intrabinary shock can form…

高能天体物理现象 · 物理学 2020-12-02 Christian J. T. van der Merwe , Zorawar Wadiasingh , Christo Venter , Alice K. Harding , Matthew G. Baring

We present timing solutions for eight binary millisecond pulsars (MSPs) discovered by searching unidentified Fermi-LAT source positions with the 327 MHz receiver of the Arecibo 305-m radio telescope. Five of the pulsars are "spiders" with…

We consider the evolution of millisecond radio pulsars in binary systems with a main-sequence or evolved stellar companion. Evolution of non-accreting binary systems with "eclipsing" milisecond pulsars was described by Klu\'zniak, Czerny &…

高能天体物理现象 · 物理学 2015-03-20 Filip Ficek , Mieszko Rutkowski , Włodek Kluźniak

Black widows and redbacks are binary systems consisting of a millisecond pulsar in a close binary with a companion having matter driven off of its surface by the pulsar wind. X-rays due to an intra-binary shock have been observed from many…

The wealth of detections of millisecond pulsars (MSPs) in $\gamma$-rays by {\em Fermi} has spurred searches for these objects among the several unidentified $\gamma$-ray sources. Interesting targets are a sub-class of binary MSPs, dubbed…

高能天体物理现象 · 物理学 2020-08-19 C. Braglia , R. P. Mignani , A. Belfiore , M. Marelli , G. L. Israel , G. Novara , A. De Luca , A. Tiengo , P. M. Saz Parkinson

Eclipsing binary millisecond pulsars (the so-called black widows and redbacks) can provide important information about accretion history, pulsar irradiation of their companion stars and the evolutionary link between accreting X-ray pulsars…

太阳与恒星天体物理 · 物理学 2013-09-17 Hai-Liang Chen , Xuefei Chen , Thomas M. Tauris , Zhanwen Han

The incidence of evaporating 'black widow' pulsars (BWPs) among all millisecond pulsars (MSPs) is far higher in globular clusters than in the field. This implies a special formation mechanism for them in clusters. Cluster MSPs in wide…

天体物理学 · 物理学 2009-11-10 A. R. King , M. B. Davies , M. E. Beer

The existence of millisecond pulsars with planet-mass companions (Bailes et al., 2011) in close orbits is challenging from the stellar evolution point of view. We calculate in detail the evolution of binary systems self-consistently,…

太阳与恒星天体物理 · 物理学 2015-06-05 O. G. Benvenuto , M. A. De Vito , J. E. Horvath

Redback millisecond pulsars (hereafter redbacks) are a sub-population of eclipsing millisecond pulsars in close binaries. The formation processes of these systems are not clear. The three pulsars showing transitions between rotation- and…

高能天体物理现象 · 物理学 2015-10-26 Kun Jia , Xiang-Dong Li

A large number of new "black widow" and "redback" energetic millisecond pulsars with irradiated stellar companions have been discovered through radio and optical searches of unidentified \textit{Fermi} sources. Synchrotron emission, from…

高能天体物理现象 · 物理学 2016-02-23 Zorawar Wadiasingh , Alice K. Harding , Christo Venter , Markus Boettcher

Reliable neutron star mass measurements are key to determining the equation-of-state of cold nuclear matter, but these are rare. "Black Widows" and "Redbacks" are compact binaries consisting of millisecond pulsars and semi-degenerate…

The discovery of transitional millisecond pulsars (tMSPs) provided conclusive proof that neutron star (NS) low-mass X-ray binaries (LMXBs) comprise part of the evolutionary pathway towards binary millisecond pulsars (MSPs). Redback and…

高能天体物理现象 · 物理学 2023-02-15 Amy H. Knight , Adam Ingram , Jakob van den Eijnden , Douglas J. K. Buisson , Lauren Rhodes , Matthew Middleton

We describe the first X-ray observations of five short orbital period ($P_B < 1$ day), $\gamma$-ray emitting, binary millisecond pulsars. Four of these, PSRs J0023+0923, J1124$-$3653, J1810+1744, and J2256$-$1024 are `black-widow' pulsars,…

高能天体物理现象 · 物理学 2015-06-16 P. Gentile , M. Roberts , M. McLaughlin , F. Camilo , J. Hessels , M. Kerr , S. Ransom , P. Ray , I. Stairs

The Fermi Gamma-ray Space Telescope has revolutionized our knowledge of the gamma-ray pulsar population, leading to the discovery of almost 100 gamma-ray pulsars and dozens of gamma-ray millisecond pulsars (MSPs). Although the outer-gap…

We consider the population of black widow pulsars (BWPs). The large majority of these are members of globular clusters. For minimum companion masses < 0.1 Msun, adiabatic evolution and consequent mass loss under gravitational radiation…

天体物理学 · 物理学 2009-11-10 A. R. King , M. E. Beer , D. J. Rolfe , K. Schenker , J. M. Skipp
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