Results 31 to 40 of about 85,413 (296)
Neutron Stars in X-ray Binaries and their Environments
, 2017 Neutron stars in X-ray binary systems are fascinating objects that display a wide range of timing and spectral phenomena in the X-rays. Not only parameters of the neutron stars, like magnetic field strength and spin period evolve in their active binary ...
Paul, Biswajit
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Be stars in X-ray binary systems [PDF]
International Astronomical Union Colloquium, 2000 AbstractThis paper will review the status of our observations and understanding of Be stars in X-ray binary systems. In virtually all cases the binary partner to the Be star is a neutron star. The circumstellar disk provides the accretion fuel and hence stimulates the X-ray emission, whilst the neutron star provides a valuable probe of the environment ...
openaire +2 more sources
New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]
, 2007 We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
A. Collier Cameron +67 more
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Low-level accretion in neutron star X-ray binaries [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We search the literature for reports on the spectral properties of neutron-star low-mass X-ray binaries when they have accretion luminosities between 1E34 and 1E36 ergs/s. We found that in this luminosity range the photon index (obtained from fitting a simple absorbed power-law in the 0.5-10 keV range) increases with decreasing 0.5-10 keV X-ray ...
Wijnands, R. +7 more
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X-Ray and UV Observations of the Contact Binary KIC 9832227
The Astronomical Journal, 2023 We investigate the X-ray and UV emission from the contact binary star KIC 9832227, which was observed with XMM-Newton for one orbital cycle. The binary is detected with an average X-ray luminosity of 3.4 × 10 ^30 erg s ^−1 .
Dirk Pandel, Lawrence A. Molnar
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On the binary nature of massive blue hypergiants: high-resolution X-ray spectroscopy suggests that Cyg OB2 12 is a colliding wind binary [PDF]
, 2017 The blue hypergiant Cyg OB2-12 (B3Ia+) is a representative member of the class of very massive stars in a poorly understood evolutionary stage. We obtained its high-resolution X-ray spectrum using Chandra observatory.
Hainich, R. +7 more
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Probing the composition of sub-millisecond rotating compact stars by r-modes instability [PDF]
, 2012 We investigate the implications of the r-modes instability on the composition of a compact star rotating at a sub-millisecond period. In particular, the only viable astrophysical scenario for such an object, wich might present inside the Low Mass X-ray ...
Drago, Alessandro, Pagliara, Giuseppe
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Magnetic Fields of Neutron Stars in X-Ray Binaries [PDF]
Space Science Reviews, 2014 16 pages, 9 figures, invited topical review, to be published in The Strongest Magnetic Fields in the Universe (Space Sciences Series of ISSI, Springer), Space Science Reviews ...
Revnivtsev, Mikhail, MEREGHETTI, Sandro
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A Comparison of Millisecond Pulsar Populations between Globular Clusters and the Galactic Field
The Astrophysical Journal, 2023 We have performed a systematic study of the rotational, orbital, and X-ray properties of millisecond pulsars (MSPs) in globular clusters (GCs) and compared their nature with those of the MSPs in the Galactic field (GF).
Jongsu Lee +6 more
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Near-infrared spectroscopy of 20 new Chandra sources in the Norma Arm
, 2014 We report on CTIO/NEWFIRM and CTIO/OSIRIS photometric and spectroscopic observations of 20 new X-ray (0.5-10 keV) emitters discovered in the Norma Arm Region Chandra Survey (NARCS).
Bauer, Franz E. +4 more
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