Results 41 to 50 of about 142,213 (355)
Are There Magnetars in High-mass X-Ray Binaries? [PDF]
Research 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
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 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
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
doaj +1 more source
Evidence for a magnetic neutron star in high mass X-ray binary 4U 2206+54 with INTEGRAL/IBIS observations [PDF]
, 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
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
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