Results 21 to 30 of about 139,946 (272)

Physical parameters of the high-mass X-ray binary 4U1700-37 [PDF]

open access: yes, 2002
We present the results of a detailed non-LTE analysis of the ultraviolet and optical spectrum of the O6.5 Iaf + star HD 153919 - the mass donor in the high-mass X-ray binary 4U1700-37.
J. S. Clark   +11 more
semanticscholar   +1 more source

CI Camelopardalis: The first sgB[e]-high mass X-ray binary twenty years on: A supernova imposter in our own Galaxy? [PDF]

open access: yesAstronomy & Astrophysics, 2018
Context. The Galactic supergiant B[e] star CI Camelopardalis (CI Cam) was the first sgB[e] star detected during an X-ray outburst. The star brightened to ∼2 Crab in the X-ray regime (∼5 × 10−8 ergs cm−2 s−1 in the 2–25 keV range) within hours before ...
E. Bartlett, J. Clark, I. Negueruela
semanticscholar   +1 more source

The Spin-down Accretion Regime of Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124

open access: yesThe 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
doaj   +1 more source

Phase-resolved spectroscopic analysis of the eclipsing black hole X-ray binary M33 X-7: System properties, accretion, and evolution [PDF]

open access: yesAstronomy & Astrophysics, 2022
M33 X-7 is the only known eclipsing black hole high mass X-ray binary. The system is reported to contain a very massive O supergiant donor and a massive black hole in a short orbit.
V. Ramachandran   +12 more
semanticscholar   +1 more source

The clumpy absorber in the high-mass X-ray binary Vela X-1 [PDF]

open access: yes, 2017
Bright and eclipsing, the high-mass X-ray binary Vela X-1 offers a unique opportunity to study accretion onto a neutron star from clumpy winds of O/B stars and to disentangle the complex accretion geometry of these systems.
V. Grinberg   +18 more
semanticscholar   +1 more source

Evidence for a magnetic neutron star in high mass X-ray binary 4U 2206+54 with INTEGRAL/IBIS observations [PDF]

open access: yes, 2009
The hard X-ray source 4U 2206+54 is a peculiar high mass X-ray binary with a main-sequence donor star. Recent X-ray observations suggested that the compact object in 4U 2206+54 may be a neutron star. The X-ray emission comes from the accretion of stellar
Wei Wang
semanticscholar   +1 more source

Black hole high mass X-ray binary microquasars at cosmic dawn [PDF]

open access: yesProceedings of the International Astronomical Union, 2018
Theoretical models and observations suggest that primordial Stellar Black Holes (Pop-III-BHs) were prolifically formed in HMXBs, which are powerful relativistic jet sources of synchrotron radiation called Microquasars (MQs).
Felix Mirabel
semanticscholar   +1 more source

A striking confluence between theory and observations of high-mass X-ray binary pulsars [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2017
We analyze the most powerful X-ray outbursts from neutron stars in eleven Magellanic high-mass X-ray binaries and three pulsating ultraluminous X-ray sources.
D. Christodoulou, S. Laycock, D. Kazanas
semanticscholar   +1 more source

An XMM-Newton and NuSTAR Study of IGR J18214-1318: A Non-pulsating High-mass X-Ray Binary with a Neutron Star [PDF]

open access: yes, 2017
IGR J18214-1318, a Galactic source discovered by the International Gamma-Ray Astrophysics Laboratory, is a high-mass X-ray binary (HMXB) with a supergiant O-type stellar donor.
F. Fornasini   +7 more
semanticscholar   +1 more source

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