Results 31 to 40 of about 2,342,043 (349)

Multiwavelength monitoring and X-ray brightening of Be X-ray binary PSR J2032+4127/MT91 213 on its approach to periastron [PDF]

open access: yes, 2016
The radio and gamma-ray pulsar PSR J2032+4127 was recently found to be in a decades-long orbit with the Be star MT91 213, with the pulsar moving rapidly towards periastron. This binary shares many similar characteristics with the previously unique binary
W. Ho   +7 more
semanticscholar   +1 more source

Populating the Galaxy with low-mass X-ray binaries [PDF]

open access: yes, 2006
We perform binary population synthesis calculations to investigate the incidence of low-mass X-ray binaries and their birth rate in the Galaxy. We use a binary evolution algorithm that models all the relevant processes including tidal circularization and
Hurley, Jarrod R., Kiel, Paul D.
core   +3 more sources

A Dragon Out of Breath? Monitoring High-velocity Outflows from the High-mass Gamma-Ray Binary LS 2883/PSR B1259–63 During the 2017–2021 Binary Cycle

open access: yesThe Astrophysical Journal, 2023
Observations of the high-mass gamma-ray binary LS 2883/PSR B1259–63 with the Chandra X-ray Observatory during the 2011–2014 and 2014–2017 binary cycles have shown X-ray-emitting clumps, presumably ejected from the binary during periastron passages. These
Jeremy Hare   +3 more
doaj   +1 more source

A NEW γ-RAY LOUD, ECLIPSING LOW-MASS X-RAY BINARY [PDF]

open access: yes, 2016
We report the discovery of an eclipsing low-mass X-ray binary at the center of the 3FGL error ellipse of the unassociated Fermi/Large Area Telescope γ-ray source 3FGL J0427.9–6704. Photometry from OGLE and the SMARTS 1.3 m telescope and spectroscopy from
J. Strader   +7 more
semanticscholar   +1 more source

Extremely fast orbital decay of the black hole X-ray binary Nova Muscae 1991 [PDF]

open access: yes, 2016
We present new medium-resolution spectroscopic observations of the black hole X-ray binary Nova Muscae 1991 taken with X-Shooter spectrograph installed at the 8.2m-VLT telescope.
J. I. G. Hernández   +7 more
semanticscholar   +1 more source

Catalogue of Be/X-ray binary systems in the Small Magellanic Cloud: X-ray, optical and IR properties [PDF]

open access: yes, 2015
This is a catalogue of 70 X-ray emitting binary systems in the Small Magellanic Cloud (SMC) that contain a Be star as the mass donor in the system and a clear X-ray pulse signature from a neutron star.
M. Coe, J. Kirk
semanticscholar   +1 more source

The eclipsing X-ray pulsar X-7 in M33 [PDF]

open access: yes, 1998
Using our extensive ROSAT X-ray observations of M33, we confirm a 3.45 day eclipse period for the Einstein source X-7 (Larson & Schulman, 1997) and discover evidence for a 0.31-s pulse period.
Brazier   +25 more
core   +3 more sources

The ultraluminous X-ray source NuSTAR J095551+6940.8: a magnetar in a high-mass X-ray binary [PDF]

open access: yes, 2014
The recent detection of pulsations from the ultra luminous X-ray source (ULX) NuSTAR J095551+6940.8 in M82 by Bachetti et al. indicates that the object is an accreting neutron star in a high mass X-ray binary (HMXB) system. The super-Eddington luminosity
K. Ekşi   +5 more
semanticscholar   +1 more source

Deep Search for Gamma-Ray Emission from the Accreting X-Ray Pulsar 1A 0535+262

open access: yesThe Astrophysical Journal, 2023
Binary systems are a well-established subclass of gamma-ray sources. The high mass X-ray binary pulsar 1A 0535+262 has been considered to be a possible gamma-ray emitter for a long time, although former gamma-ray searches using the Fermi Large Area ...
X. Hou   +4 more
doaj   +1 more source

Detection of the first infra-red quasi-periodic oscillation in a black hole X-ray binary. [PDF]

open access: yes, 2015
We present the analysis of fast variability of Very Large Telescope/ISAAC (Infrared Spectrometer And Array Camera) (infra-red), XMM–Newton/OM (optical) and EPIC-pn (X-ray), and RXTE/PCA (X-ray) observations of the black hole X-ray binary GX 339−4 in a ...
M. Kalamkar   +8 more
semanticscholar   +1 more source

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