Physical parameters of the high-mass X-ray binary 4U1700-37 [PDF]
, 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
Phase-resolved spectroscopic analysis of the eclipsing black hole X-ray binary M33 X-7: System properties, accretion, and evolution [PDF]
Astronomy & 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
A TESS search for donor-star pulsations in high-mass X-ray binaries
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Ground-based optical photometry of the counterparts of high-mass X-ray binaries (HMXBs) has revealed the presence of periodic modulations on time-scales of ∼0.3–0.5 d. More recent space-based observations (CoRoT and TESS) of OB and Be stars have shown that pulsations caused by p and g modes are common in early-type stars.
Gavin Ramsay +2 more
openaire +5 more sources
CI Camelopardalis: The first sgB[e]-high mass X-ray binary twenty years on: A supernova imposter in our own Galaxy? [PDF]
Astronomy & 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 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, 2012 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$^{-1}$.
J. S. Clark +10 more
openaire +7 more sources
The masses of the neutron and donor star in the high-mass X-ray binary IGR J18027-2016 [PDF]
Astronomy & Astrophysics, 2011 We report near-infrared observations of the supergiant donor to the eclipsing high mass X-ray binary pulsar IGR J18027-2016. We aim to determine its spectral type and measure its radial velocity curve and hence determine the stellar masses of the components.
Ignacio Negueruela +6 more
openaire +6 more sources
The clumpy absorber in the high-mass X-ray binary Vela X-1 [PDF]
, 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
Black hole high mass X-ray binary microquasars at cosmic dawn [PDF]
Proceedings 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]
Research 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
X-ray emission from star-forming galaxies - I. High-mass X-ray binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 23 pages, 14 figures, 5 tables, MNRAS - Accepted 2011 September ...
Marat Gilfanov +4 more
openaire +4 more sources