Results 41 to 50 of about 22,514,851 (295)

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

open access: yesAstronomy 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

Origin of young accreting neutron stars in high-mass X-ray binaries in supernova remnants [PDF]

open access: yesMonthly 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
openaire   +2 more sources

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

open access: yesActa 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

open access: yesMonthly 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   +4 more
openaire   +2 more sources

The high energy X-ray probe (HEX-P): a new window into neutron star accretion

open access: yesFrontiers 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   +19 more
doaj   +1 more source

Time Resolved Two Dimensional X-Ray Densitometry of a Two Phase Flow Downstream of a Ventilated Cavity [PDF]

open access: yes, 2013
To measure the void fraction distribution in gas-liquid flows, a two-dimensional x-ray densitometry system was developed. This system is capable of acquiring a two-dimensional projection with a 225 cm2 area of measurement through 21 cm of water.
GABILLET, Céline   +8 more
core   +1 more source

The radial velocity of the companion star in the low-mass X-ray binary 2S 0921-630 : limits on the mass of the compact object [PDF]

open access: yes, 2005
In this paper we report on optical spectroscopic observations of the low-mass X-ray binary 2S 0921–630 obtained with the Very Large Telescope. We found sinusoidal radial velocity variations of the companion star with a semi-amplitude of 99.1 ± 3.1 km s−1
van der Klis, M.   +5 more
core   +1 more source

The attenuation of atmospheric Cerenkov photons [PDF]

open access: yes, 2002
Whilst the atmosphere places a limit on the successful applications of many branches of astronomy, it becomes an invaluable tool for the detection of very high energy γ-rays. This thesis is concerned with reducing the systematic uncertainties inherent to
Daniel, Michael Kevin, Daniel, Michael
core   +1 more source

Double-sided fresnel zone plates as high performance optics in X-ray microscopy [PDF]

open access: yes, 2015
X-ray microscopy describes a range of analytical techniques, specialized for the characterization of organic and inorganic samples using high energy photons.
Mohácsi, István
core   +1 more source

A portable CCD array detector for in-situ analysis of powder samples using combined x-ray diffraction/x-ray fluorescence techniques [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This work describes the design, development and testing of a portable charge-coupled device detector system to be used for the simultaneous collection of X-
Intisar, Amir
core   +7 more sources

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