Results 11 to 20 of about 2,506 (304)
News on the X-ray emission from hot subdwarf stars [PDF]
Open 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
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Stellar Wind Parameters of Massive Stars in Accretion-Powered High-Mass X-Ray Binary Pulsars [PDF]
GalaxiesThe process of mass exchange between the components of High-Mass X-ray Binary (HMXB) systems with neutron stars undergoing wind-fed accretion is discussed. The X-ray luminosity of these systems allows us to evaluate the mass capture rate by the neutron star from the stellar wind of its massive companion and set limits on the relative velocity between ...
Nina Beskrovnaya +2 more
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Modeling High Mass X-Ray Binaries to Double Neutron Stars through Common Envelope Evolution [PDF]
The Astrophysical JournalAbstract We present detailed evolutionary simulations of wide binary systems with high-mass (8–20 M ⊙) donor stars and a 1.4 M ⊙ neutron star. Mass transfer in such binaries is dynamically unstable, and common envelope (CE) evolution is followed. We use a recently developed prescription to deal with CE
Yu-Dong Nie +5 more
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Early neutron star evolution in high-mass X-ray binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The application of standard accretion theory to observations of X-ray binaries provides valuable insights into neutron star (NS) properties, such as their spin period and magnetic field. However, most studies concentrate on relatively old systems, where the NS is in its late propeller, accretor, or nearly spin equilibrium phase.
F Haberl +4 more
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Feeding Neutron Stars in High-Mass X-ray Binaries [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractWe suggest that the Be/X-ray binary SXP 1062 and the supergiant fast X-ray transient AX J1841.0-0536 belong to accreting magnetars and anti-magnetars, respectively.
L. Fu, Z. Zhang, X.-D. Li
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Evolution of neutron stars in high-mass X-ray binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We consider the evolution of neutron stars during the X-ray phase of high-mass binaries. Calculationsareperformedassumingacrustal originofthemagneticfield.Astrongwindfrom the companion can significantly influence the magnetic and spin behaviour of a neutron star even during the main-sequence life of the companion.
V. Urpin, D. Konenkov, U. Geppert
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The Spin-down Accretion Regime of Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124
The Astrophysical Journal, 2023 The relatively high fluxes of the Galactic ultraluminous X-ray pulsar Swift J0243 allow a detailed study of its spin-down regime in the quiescent state for the first time.
Jiren Liu, Long Ji, Mingyu Ge
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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
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Multiwavelength Characterization of the High-mass X-Ray Binary Population of M33
The 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
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Simulations of X-ray bursts and superbursts [PDF]
, 2015 Observations of neutron star in binary systems provide powerful constrains on the physics at the surface of neutron stars. During the accretion of matter from the companion star, periodic nuclear explosion are triggered in the outer layers of the neutron
Fehlmann, Sofie
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