Results 21 to 30 of about 85,552 (296)

Back to Business: SLX 1746–331 after 13 Years of Silence

open access: yesThe Astrophysical Journal, 2023
The black hole candidate system SLX 1746–331 was back to business in 2023, after a long silence of roughly 13 years. An outburst was observed thoroughly by Insight-HXMT and NICER.
Jing-Qiang Peng   +19 more
doaj   +1 more source

Magnetic Fields of Neutron Stars in X-Ray Binaries [PDF]

open access: yesSpace 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
openaire   +3 more sources

Accretion Onto the Neutron Star in Be/X-ray Binaries [PDF]

open access: yesSymposium - International Astronomical Union, 2004
We study accretion onto the neutron star in Be/X-ray binaries, using a 3D SPH code and the data imported from a high resolution simulation by Okazaki et al. (2002) for a coplanar system with a short period (Porb = 24.3 d) and moderate eccentricity (e = 0.34).
Hayasaki, Kimitake, Okazaki, Atsuo. T.
openaire   +2 more sources

X-Raying the Birth of Binary Neutron Stars and Neutron Star–Black Hole Binaries

open access: yesThe Astrophysical Journal, 2022
Abstract We consider fallback accretion after an ultrastripped supernova (USSN) that accompanies formation of a binary neutron star (BNS) or a neutron star–black hole binary (NS–BH). The fallback matter initially accretes directly to the nascent NS, while it starts to accrete to the circumbinary disk, typically 0.1–1 day after the onset ...
Kazumi Kashiyama, Ryo Sawada, Yudai Suwa
openaire   +2 more sources

Beam Pattern Evolution of Accreting X-Ray Pulsar 1A 0535+262 during Its 2020 Giant Outburst

open access: yesThe Astrophysical Journal, 2023
We report on pulse profile decomposition analysis of bright transient X-ray pulsar 1A 0535+262 using broadband Insight-HXMT observations during a giant outburst of the source in 2020.
Y. F. Hu   +9 more
doaj   +1 more source

Magnetic Flares on Asymptotic Giant Branch Stars [PDF]

open access: yes, 2002
We investigate the consequences of magnetic flares on the surface of asymptotic giant branch (AGB) and similar stars. In contrast to the solar wind, in the winds of AGB stars the gas cooling time is much shorter than the outflow time.
Bochanski J. J.   +13 more
core   +4 more sources

Debris Disks around Solar-Type Stars: Observations of the Pleiades with Spitzer Space Telescope [PDF]

open access: yes, 2010
We present Spitzer MIPS observations at 24 um of 37 solar-type stars in the Pleiades and combine them with previous observations to obtain a sample of 71 stars.
Gorlova, N. I.   +5 more
core   +2 more sources

Be stars in X-ray binary systems [PDF]

open access: yesInternational 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

Bowen Fluorescence from Companion Stars in X-Ray Binaries [PDF]

open access: yesInternational Astronomical Union Colloquium, 2004
AbstractThis paper will review a new technique of detecting companion stars in LMXBs and X-ray transients in outburst using the Bowen fluorescence NIII lines at 4634-4640. These lines are very efficiently reprocessed in the atmospheres of the companion stars and, thereby, provide estimates of the K2 velocities and mass functions.
Casares, J   +5 more
openaire   +3 more sources

A CORAVEL radial-velocity monitoring of S stars: symbiotic activity vs. orbital separation [PDF]

open access: yes, 1998
Orbital elements are presented for the Tc-poor S stars HR 363 (= HD 7351) and HD 191226. With an orbital period of 4592 d (=12.6 y), HR 363 has the longest period known among S stars, and yet it is a strong X-ray source. Its X-ray flux is similar to that
Carquillat, J. M.   +3 more
core   +1 more source

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