Results 11 to 20 of about 139,946 (272)

Spectral Energy Distributions of Southern Binary X-Ray Sources

open access: yesThe Astrophysical Journal Supplement Series, 2023
The rapid variability of X-ray binaries (XRBs) produces a wide range of X-ray states that are linked to activity across the electromagnetic spectrum. It is particularly challenging to study a sample of sources large enough to include all types in their ...
John M. Dickey   +7 more
doaj   +1 more source

Magnetic Braking with MESA Evolutionary Models in the Single Star and Low-mass X-Ray Binary Regimes [PDF]

open access: yesAstrophysical Journal, 2022
Magnetic braking has a prominent role in driving the evolution of close low-mass binary systems and heavily influences the rotation rates of low-mass F- and later-type stars with convective envelopes. Several possible prescriptions that describe magnetic
S. Gossage, V. Kalogera, Meng Sun
semanticscholar   +1 more source

Clumpy Wind Studies and the Nondetection of a Cyclotron Line in OAO 1657–415

open access: yesThe Astrophysical Journal, 2023
Winds of massive stars are suspected to be inhomogeneous (or clumpy), which biases the measures of their mass-loss rates. In high-mass X-ray binaries (HMXBs), the compact object can be used as an orbiting X-ray point source to probe the wind and ...
Pragati Pradhan   +13 more
doaj   +1 more source

High-Mass X-ray binary: Classification, Formation, and Evolution

open access: yesJournal of Physics: Conference Series, 2021
A high mass X-ray binary is a binary system consisting of an accreting neutron star or black hole and an early-type star with more than 10 solar masses.
Chengzhuo Tan
semanticscholar   +1 more source

Do High-spin High-mass X-Ray Binaries Contribute to the Population of Merging Binary Black Holes? [PDF]

open access: yesAstrophysical Journal Letters, 2022
Gravitational-wave observations of binary black hole (BBH) systems point to black hole spin magnitudes being relatively low. These measurements appear in tension with high spin measurements for high-mass X-ray binaries (HMXBs).
Monica Gallegos-Garcia   +4 more
semanticscholar   +1 more source

Characteristics and evolution of Be-type high mass X-ray binaries as potential Ultraluminous X-ray Sources [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2022
Some ultraluminous X-ray sources (ULXs) exhibit X-ray pulses, and their central sources are thought to be neutron stars. It has also been suggested that some are transient sources with Be-type donors. In this study, we use the mass accretion model of a
S. Karino
semanticscholar   +1 more source

Evolution of eccentric high-mass X-ray binaries. The case of GX 301-2 [PDF]

open access: yesAstronomy & Astrophysics, 2022
The formation of neutron stars is associated with powerful astrophysical transients such as supernovae. In many cases, asymmetries in the supernova explosions are thought to be responsible for the large observed velocities of neutron stars.
A. Bunzel   +3 more
semanticscholar   +1 more source

Constraining the properties of dense neutron star cores: The case of the low-mass X-ray binary HETE J1900.1–2455 [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2021
Measuring the time evolution of the effective surface temperature of neutron stars can provide invaluable information on the properties of their dense cores.
N. Degenaar   +5 more
semanticscholar   +1 more source

Calibrating X-Ray Binary Luminosity Functions via Optical Reconnaissance. II. The High-mass XLF and Globular Cluster Population of X-Ray Binaries in the Low Star-forming Spiral M81 [PDF]

open access: yesAstrophysical Journal, 2022
We characterize the optical counterparts to the compact X-ray source population within the nearby spiral galaxy M81 using multiband Hubble Space Telescope (HST) imaging data.
Q. Hunt   +4 more
semanticscholar   +1 more source

Are There Magnetars in High-mass X-Ray Binaries? [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2021
Magnetars form a special population of neutron stars with strong magnetic fields and long spin periods. About 30 magnetars and magnetar candidates known currently are probably isolated, but the possibility that magnetars are in binaries has not been ...
K. Xu   +6 more
semanticscholar   +1 more source

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