Results 21 to 30 of about 73,235 (299)
Constraints to neutron-star kicks in high-mass X-ray binaries withGaiaEDR3
Astronomy & Astrophysics, 2022 Context.All neutron star progenitors in neutron-star high-mass X-ray binaries (NS HMXBs) undergo a supernova event that may lead to a significant natal kick impacting the motion of the whole binary system. The space observatoryGaiaperforms a deep optical survey with exquisite astrometric accuracy, for both position and proper motions, that can be used ...
Francis Fortin +4 more
openaire +4 more sources
High-Frequency Variability in Neutron-Star Low-Mass X-ray Binaries [PDF]
, 2020 Binary systems with a neutron-star primary accreting from a companion star display variability in the X-ray band on time scales ranging from years to milliseconds. With frequencies of up to ~1300 Hz, the kilohertz quasi-periodic oscillations (kHz QPOs) represent the fastest variability observed from any astronomical object.
Méndez, Mariano +2 more
openaire +3 more sources
Clumpy wind accretion in supergiant neutron star high mass X-ray binaries [PDF]
Astronomy & Astrophysics, 2016 The accretion of the stellar wind material by a compact object represents the main mechanism powering the X-ray emission in classical supergiant high mass X-ray binaries and supergiant fast X-ray transients. In this work we present the first attempt to simulate the accretion process of a fast and dense massive star wind onto a neutron star, taking into
Bozzo, Enrico +3 more
openaire +3 more sources
High mass X-ray binaries: Progenitors of double neutron star systems [PDF]
The Fourteenth Marcel Grossmann Meeting, 2017 6 pages, Invited review at the Fourteenth Marcel Grossmann Meeting - MG14 - University of Rome "La Sapienza" - Rome, July 12-18, 2015.
openaire +3 more sources
Spin evolution of neutron stars in wind-fed high-mass X-ray binaries [PDF]
Publications of the Astronomical Society of Japan, 2020 Abstract The observed X-ray pulse period of OB-type high-mass X-ray binary (HMXB) pulsars is typically longer than 100 seconds. It is considered that the interaction between the strong magnetic field of a neutron star and the wind matter could cause such a long pulse period.
openaire +2 more sources
The evolution and masses of the neutron star and donor star in the high mass X-ray binary OAO 1657-415 [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 We report near-infrared radial velocity measurements of the recently identified donor star in the high mass X-ray binary system OAO 1657-415 obtained in the H band using ISAAC on the VLT. Cross-correlation methods were employed to construct a radial velocity curve with a semi-amplitude of $22.1 \pm 3.5$ km s$^{-1}$.
Mason, A. B. +7 more
openaire +7 more sources
Neutron star masses from hydrodynamical effects in obscured supergiant high mass X-ray binaries [PDF]
Astronomy & Astrophysics, 2012 Context. A population of obscured supergiant high mass X-ray binaries has been discovered by INTEGRAL. X-ray wind tomography of IGR J17252-3616 inferred a slow wind velocity to account for the enhanced obscuration. Aims. The main goal of this study is to understand under which conditions high obscuration could occur. Methods.
A. Manousakis, R. Walter, J. M. Blondin
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Origin of young accreting neutron stars in high-mass X-ray binaries in supernova remnants [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Recently, several accreting neutron stars (NSs) in X-ray binary systems inside supernova remnants have been discovered. They represent a puzzle for the standard magnetorotational evolution of NSs, as their ages (≲105 yr) are much shorter than the expected duration of Ejector and Propeller stages preceding the onset of wind ...
A D Khokhriakova, S B Popov
openaire +2 more sources
The high energy X-ray probe (HEX-P): a new window into neutron star accretion
Frontiers in Astronomy and Space Sciences, 2023 Accreting neutron stars (NSs) represent a unique laboratory for probing the physics of accretion in the presence of strong magnetic fields (B ≳ 108 G).
R. M. Ludlam +19 more
doaj +1 more source
Nature of the Extreme Ultraluminous X-ray Sources [PDF]
, 2015 In this proof-of-concept study we demonstrate that in a binary system mass can be transferred toward an accreting compact object at extremely high rate. If the transferred mass is efficiently converted to X-ray luminosity (with disregard of the classical
Belczynski, Krzysztof +3 more
core +2 more sources