منابع مشابه
Evolution of Black Widow Pulsars
We consider the evolution of black widow pulsars (BWPs). The large majority of these are members of globular clusters. For minimum companion masses < 0.1M ̄, adiabatic evolution and consequent mass loss under gravitational radiation appear to provide a coherent explanation of all observable properties. We suggest that the group of BWPs with minimum companion masses ∼> 0.1M ̄ are systems relaxing ...
متن کاملBlack Widow Pulsars: the Price of Promiscuity
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 binaries with WD companions exchange them for turnoff–mass stars. These new companions eventually overflow their Roche lobes because of encounters and tides. The ...
متن کاملOSSE Observations of X-Ray Pulsars
We report on OSSE observations of the Be binary pulsars A0535+26, GRO J1008{57, and 4U 0115+63 at energies above 50 keV. The spectra are generally thermal, with exponential folding energies of 15{25 keV, and no evidence for hard power-law tails. We have clearly detected a strong cyclotron absorption line at 110 keV from A0535+26 [1], and we nd a suggestion of an absorption line near 90 keV from...
متن کاملObservations of millisecond X-ray pulsars
I present an observational review of the five accretion-driven millisecond X-ray pulsars currently known, focusing on the results obtained with the Rossi X-ray Timing Explorer (RXTE) satellite. A prominent place in this review is given to the first such system discovered, SAX J1808.4–3658. Currently four outbursts have been detected from this source, three of which have been studied using RXTE....
متن کاملX-ray and γ-ray observations of millisecond pulsars
The launch of several sensitive X-ray and γ-ray instruments during the last decade heralded a new era in the research of millisecond pulsars. The current number of millisecond pulsars detected in the X-ray spectral window is about 30, including those located in globular clusters, which represents a significant fraction of the total number of spin-down powered pulsars emitting high-energy radiat...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/783/2/69