Results 31 to 40 of about 2,506 (304)

High-mass X-ray binaries and recent star formation history of the Small Magellanic Cloud [PDF]

Astronomy Letters, 2007
We study the relation between high-mass X-ray binary (HMXB) population and recent star formation history (SFH) for the Small Magellanic Cloud (SMC). Using archival optical SMC observations, we have approximated the color-magnitude diagrams of the stellar population by model stellar populations and, in this way, reconstructed the spatially resolved SFH ...
Shtykovskiy, P., Gilfanov, M.
openaire   +3 more sources

Spin evolution of neutron stars in wind-fed high-mass X-ray binaries [PDF]

Publications of the Astronomical Society of Japan, 2020
Abstract The observed X-ray pulse period of OB-type high-mass X-ray binary (HMXB) pulsars is typically longer than 100 seconds. It is considered that the interaction between the strong magnetic field of a neutron star and the wind matter could cause such a long pulse period.
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Origin of young accreting neutron stars in high-mass X-ray binaries in supernova remnants [PDF]

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT Recently, several accreting neutron stars (NSs) in X-ray binary systems inside supernova remnants have been discovered. They represent a puzzle for the standard magnetorotational evolution of NSs, as their ages (≲105 yr) are much shorter than the expected duration of Ejector and Propeller stages preceding the onset of wind ...
A D Khokhriakova, S B Popov
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The high energy X-ray probe (HEX-P): a new window into neutron star accretion

Frontiers in Astronomy and Space Sciences, 2023
Accreting neutron stars (NSs) represent a unique laboratory for probing the physics of accretion in the presence of strong magnetic fields (B ≳ 108 G).
R. M. Ludlam, C. Malacaria, E. Sokolova-Lapa, F. Fuerst, P. Pradhan, A. W. Shaw, K. Pottschmidt, K. Pottschmidt, S. Pike, G. Vasilopoulos, J. Wilms, J. A. García, J. A. García, K. Madsen, D. Stern, C. Maitra, M. Del Santo, D. J. Walton, M. C. Brumback, J. van den Eijnden   +19 more
doaj   +1 more source

Rotation of the Mass Donors in High-mass X-ray Binaries and Symbiotic Stars

Acta Polytechnica CTU Proceedings, 2015
Our aim is to investigate the tidal interaction in High-mass X-ray Binaries and Symbiotic stars in order to determine in which objects the rotation of the mass donors is synchronized or pseudosynchronized with the orbital motion of the compact companion.
K. Stoyanov, R. Zamanov
openaire   +4 more sources

The spatial correlation of high-mass X-ray binaries and young star clusters in nearby star-forming galaxies

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present an analysis of the two-point spatial correlation functions of high-mass X-ray binary (HMXB) and young star cluster (YSC) populations in M31 and M33. We find evidence that HMXBs are spatially correlated with YSCs to a higher degree than would be expected from random chance in both galaxies.
Breanna A Binder, Ashley K Anderson, Kristen Garofali, Margaret Lazzarini, Benjamin F Williams   +4 more
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Atmospheres of brown dwarfs [PDF]

, 2014
ChH highlights financial support of the European Community under the FP7 by an ERC starting grant. SLC acknowledges financial support of University of LeicesterBrown Dwarfs are the coolest class of stellar objects known to date. Our present perception is
Casewell, Sarah, Helling, Christiane
core   +1 more source

Letter to Nature: An ultra-relativistic outflow from a neutron star accreting gas from a companion. [PDF]

, 2004
Collimated relativistic outflows—also known as jets—are amongst the most energetic phenomena in the Universe. They are associated with supermassive black holes in distant active galactic nuclei1, accreting stellar-mass black holes and neutron stars in ...
Johnston, H., Spencer, R, Tzioumis, T., Wu, Kinwah, Wu, K., Tzioumis, Tasso, van der Klis, M, Fender, Rob, Michiel van der Klis, Kinwah Wu, Jonker, P, Ralph Spencer, Wu, KW, Johnston, H, Tzioumis, T, Peter Jonker, Fender, R., Jonker, Peter, van der Klis, Michiel, van der Klis, M., Johnston, Helen, Helen Johnston, Spencer, Ralph, Jonker, P., Tasso Tzioumis, Fender, R, Spencer, R., Rob Fender   +27 more
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Enhanced optical activity 12 d before X-ray activity, and a 4 d X-ray delay during outburst rise, in a low-mass X-ray binary [PDF]

, 2020
X-ray transients, such as accreting neutron stars, periodically undergo outbursts, thought to be caused by a thermal-viscous instability in the accretion disc.
Goodwin, A.J., PAPITTO, ALESSANDRO, Lewis, F., Wijnands, R., Kotze, E.J., Heinke, C. O., de Martino, D., Russell, D. M., Kotze, E. J., Parikh, A. S., Goodwin, A. J., Bramich, D. M., Russell, D.M., Baglio, M.C., Galloway, D.K., in 't Zand, J. J. M., Buckley, D.A.H., Bramich, D.M., Buckley, D. A. H., Baglio, M. C., Papitto, A., DE MARTINO, Domitilla, Parikh, A.S., Galloway, D. K., in't Zand, J.J.M., Heinke, C.O., Homan, J.   +26 more
core   +1 more source

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, Belloni, Tomaso M., Zhang, Chengmin   +2 more
openaire   +3 more sources