Results 1 to 10 of about 2,483 (267)
JET MODELS FOR NEUTRON STAR X-RAY BINARIES
International Journal of Modern Physics: Conference Series, 2012 A variety of different models for jet formation have been developed over the years (mainly) for black hole systems and young stellar objects. Conclusive observational constraints which would favor one particular mechanism are difficult to obtain.
Migliari, S. +3 more
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High-Mass X-Ray Binaries and OB Runaway Stars [PDF]
International Astronomical Union Colloquium, 2004 AbstractHigh-mass X-ray binaries (HMXBs) represent an important phase in the evolution of massive binary systems and provide fundamental information on the properties of the OB-star primaries and their compact secondaries (neutron star, black hole). Recent observations indicate that the neutron stars in some of these systems (Vela X-1, 4U 1700-37) are ...
Kaper, L. +2 more
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Hydrogen-triggered X-Ray Bursts from SAX J1808.4−3658? The Onset of Nuclear Burning
The Astrophysical Journal, 2023 We present a study of weak, thermonuclear X-ray bursts from the accreting millisecond X-ray pulsar SAX J1808.4−3658. We focus on a burst observed with the Neutron Star Interior Composition Explorer on 2019 August 9, and describe a similar burst observed ...
Sierra Casten +2 more
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Donor Stars in Black Hole X‐Ray Binaries [PDF]
The Astrophysical Journal, 1999 We study theoretically the formation of black-hole (BH) X-ray binaries. Consistency of the models with the observed relative numbers of systems with low-mass (<2 M_sun) and intermediate-mass (~2 M_sun - M_{BH}) donors leads to severe constraints on the evolutionary parameters of the progenitors.
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Formation of Ultracompact X-Ray Binaries in Dense Star Clusters [PDF]
The Astrophysical Journal, 2005 Bright, ultracompact X-ray binaries observed in dense star clusters, such as Galactic globular clusters, must have formed relatively recently, since their lifetimes as persistent bright sources are short (e.g., ~10^8 yr above 10^36 erg/s for a 1.4 Msun neutron star accreting from a degenerate helium companion with an initial mass of ~0.2 Msun ...
Ivanova, N. +4 more
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Detection of Multiple X-Ray Quasi-periodic Oscillations in IGR J19294+1816 with Insight-HXMT
The Astrophysical JournalWe report the timing results with Insight-HXMT observations of X-ray binary IGR J19294+1816 during its 2019 type I outburst at the decline phase shortly following its peak.
Wen Yang, Wei Wang
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The Astrophysical JournalWe present the results of multiwavelength observations of the high-mass gamma-ray binary (HMGB) 4FGL J1405.1−6119. A pair of joint XMM-Newton and NuSTAR observations taken in 2019 (sampling the gamma-ray maximum and X-ray maximum) characterize the ...
Alexander Lange +6 more
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Low-level accretion in neutron star X-ray binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We search the literature for reports on the spectral properties of neutron-star low-mass X-ray binaries when they have accretion luminosities between 1E34 and 1E36 ergs/s. We found that in this luminosity range the photon index (obtained from fitting a simple absorbed power-law in the 0.5-10 keV range) increases with decreasing 0.5-10 keV X-ray ...
Wijnands, R. +7 more
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Investigating the Ultracompact X-Ray Binary Candidate SLX 1735-269 with NICER and NuSTAR
The Astrophysical JournalWe present two simultaneous NICER and NuSTAR observations of the ultracompact X-ray binary (UCXB) candidate SLX 1735−269 while the source was in two different spectral states. Using various reflection modeling techniques, we find that xillverCO , a model
D. L. Moutard +10 more
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The X-Ray Radiation Mechanism of the Compact (Neutron) Binary Stars [PDF]
Symposium - International Astronomical Union, 1987 Usually we think a X-ray source may be a compact(neutron) binary star on which the X-ray radiation might be generated by gravitational acceleration for the particles coming from the primary and going along magnetic field lines of the compact star to the poles. But, in the past, people don't consider well the problem of particle acceleration.
Tong Yi, Fang Geng, Mao Xinjie
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