Results 41 to 50 of about 2,293,053 (380)

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

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

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

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

NuSTAR Observations of X-ray Binaries [PDF]

open access: yesProceedings of 10th INTEGRAL Workshop: A Synergistic View of the High-Energy Sky — PoS(Integral2014), 2015
From the proceedings of the 10th INTEGRAL ...
Tomsick, John A.   +11 more
openaire   +6 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

NuSTAR observations and broadband spectral energy distribution modeling of the millisecond pulsar binary PSR J1023+0038 [PDF]

open access: yes, 2014
We report the first hard X-ray (3-79 keV) observations of the millisecond pulsar (MSP) binary PSR J1023+0038 using NuSTAR. This system has been shown transiting between a low-mass X-ray binary (LMXB) state and a rotation-powered MSP state.
Cheng, K. S.   +6 more
core   +3 more sources

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

Spectral Transitions in X-Ray Binaries [PDF]

open access: yesProgress of Theoretical Physics Supplement, 2004
We systematically analyzed about a terabyte of data from Galactic binary systems to characterize how these spectra change as a function of mass accretion rate. With this volume of data we are able to identify the differences in behaviour of black holes and neutron stars, implying that black holes really do have an event horizon.
Done, Chris, Gierliński, Marek
openaire   +5 more sources

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

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