Results 11 to 20 of about 85,552 (296)

Neutron Stars in X-ray Binaries and their Environments [PDF]

open access: yesJournal of Astrophysics and Astronomy, 2017
Has appeared in Journal of Astrophysics and Astronomy special issue on 'Physics of Neutron Stars and Related Objects', celebrating the 75th birth-year of G ...
Paul, Biswajit
openaire   +3 more sources

News on the X-ray emission from hot subdwarf stars [PDF]

open access: yesOpen Astronomy, 2017
In latest years, the high sensitivity of the instruments on-board the XMM-Newton and Chandra satellites allowed us to explore the properties of the X-ray emission from hot subdwarf stars.
Palombara Nicola La, Mereghetti Sandro
doaj   +3 more sources

Unveiling Properties of the Nonthermal X-Ray Production in the Gamma-Ray Binary LS 5039 Using the Long-term Pattern of Its Fast X-Ray Variability

open access: yesThe Astrophysical Journal, 2023
Gamma-ray binary systems, a subclass of high-mass X-ray binaries, show nonthermal emissions from radio to TeV. While efficient electron acceleration is considered to take place in them, the nature of the acceleration mechanism and the physical ...
Hiroki Yoneda   +7 more
doaj   +1 more source

Multiwavelength Characterization of the High-mass X-Ray Binary Population of M33

open access: yesThe Astrophysical Journal, 2023
We present multiwavelength characterization of 65 high-mass X-ray binary (HMXB) candidates in M33. We use the Chandra ACIS survey of M33 (ChASeM33) catalog to select hard X-ray point sources that are spatially coincident with UV-bright point-source ...
Margaret Lazzarini   +14 more
doaj   +1 more source

The origin of the hard X-ray tail in neutron-star X-ray binaries [PDF]

open access: yesAstronomy & Astrophysics, 2016
Neutron star X-ray binaries emit a compact, optically thick, relativistic radio jet during low-luminosity, usually hard states, as Galactic black-hole X-ray binaries do. When radio emission is bright, a hard power-law tail without evidence for an exponential cutoff is observed in most systems.
Reig, P., Kylafis, N.
openaire   +2 more sources

Masses of Neutron Stars in X-ray Binary Systems [PDF]

open access: yesSymposium - International Astronomical Union, 1981
The masses of 6 neutron stars have now been established through studies of binary X-ray and radio pulsars. All of the masses are found to be consistent with, but not necessarily constrained to, the range 1.2–1.6 M⊙. In this talk we discuss the methods and assumptions used in determining the masses of neutron stars in binary X-ray pulsar systems.
R. L. Kelley, S. Rappaport
openaire   +1 more source

Radio Emitting X-ray Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
Some of the most astrophysically interesting objects are found among the radio-emitting X-ray binary stars (REXRB). The class includes the well-studied objects such as SS 433, Cyg X-3 and Sco X-1. The recent discoveries of relativistic ejection of radio knots in the X-ray transients 1915+105 (Mirabel & Rodriguez 1994) and 1655–40 (Hjellming & ...
openaire   +1 more source

X-rays from Hot Subdwarfs [PDF]

open access: yes, 2015
Thanks to the high sensitivity of the instruments on board the XMM-Newton and Chandra satellites, it has become possible to explore the properties of the X-ray emission from hot subdwarfs.
La Palombara, Nicola, Mereghetti, Sandro
core   +3 more sources

An X-Ray-dim “Isolated” Neutron Star in a Binary?

open access: yesThe Astrophysical Journal Letters, 2023
Abstract We report the discovery of a dark companion to 2MASS J15274848+3536572 with an orbital period of 6.14 hr. Combining the radial velocity from LAMOST observations and modeling of the multiband light curve, one obtains a mass function of ≃0.131 M ⊙, an inclination of
Jie Lin   +15 more
openaire   +3 more sources

Binary interaction dominates the evolution of massive stars [PDF]

open access: yes, 2012
The presence of a nearby companion alters the evolution of massive stars in binary systems, leading to phenomena such as stellar mergers, X-ray binaries and gamma-ray bursts.
A. de Koter   +11 more
core   +3 more sources

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