X-ray views of neutron star low-mass X-ray binaries
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A neutron star low-mass binary is a binary stellar system with a neutron star and a low-mass companion star rotating around each other. In this system the neutron star accretes mass from the companion, and as this matter falls into the deep potential well of the neutron star, the gravitational potential energy is released primarily in the wavelengths. Such a source was first discovered in X-rays in 1962, and this discovery formally gave birth to the X-ray astronomy. In the subsequent decades, our knowledge of these sources has increased enormously by the observations with several space missions. Here we give a brief overview of our current understanding of the observational aspects of these systems.Keywords:
X-ray binary
X-ray burster
Star (game theory)
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The discovery by Giacconi and his colleagues of variable X-ray sources in close binary systems certainly ranks as one of the highlights of astronomical research during the last 3 years. These remarkable objects have already been extensively studied, by optical and radio observations as well as in the X-ray band; and they seem likely to prove as significant and far-reaching in their implications as pulsars.
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X-ray binary
X-ray pulsar
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Strong oscillations near 1000 Hz have been discovered in a number of low mass x-ray binaries with NASA's Rossi X-Ray Timing Explorer. Their behavior should ultimately lead us to a better understanding of the accretion dynamics and the fundamental properties of the neutron star itself. Here we summarize the known properties of fast QPOs, focusing on results from the source 4U 0614+091. We highlight some of the aspects yet to be explored.
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A neutron star low-mass X-ray binary is a binary stellar system with a neutron star and a low-mass companion star rotating around each other. In this system the neutron star accretes mass from the companion, and as this matter falls into the deep potential well of the neutron star, the gravitational potential energy is released primarily in the X-ray wavelengths. Such a source was first discovered in X-rays in 1962, and this discovery formally gave birth to the "X-ray astronomy". In the subsequent decades, our knowledge of these sources has increased enormously by the observations with several X-ray space missions. Here we give a brief overview of our current understanding of the X-ray observational aspects of these systems.
X-ray binary
X-ray burster
Stellar mass
Star (game theory)
Low Mass
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In this work we provide a brief insight into two aspects of Be/X-ray binaries, which are probably involved in production of X-ray outbursts: the evolution of the Be star disk, in particular of its size, and the binary geometry which drives gravitational interaction. Simultaneous X-ray and optical data will aid our investigation of the evolution of Be stars in binaries and the X-ray outburst mechanism.
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Since its discovery in 1976 the X‐ray binary hosting Circinus X‐l has repeatedly surprised researchers with its unorthodox behavior as an X‐ray source. It is currently viewed as an accreting neutron star binary in a highly eccentric 16.6 day orbit around a likely intermediate mass companion star connecting to the Roche lobe near periastron only. It has since gained a reputation as an oddball in the zoo of Galactic X‐ray binaries. Its 30 yr light curve shows short‐term and long‐term variability. The short‐term variability is related to its orbital periastron passage, the long‐term implies a transient‐like pattern where the X‐ray flux in‐ and decreases over time periods of 5–10 yr. High resolution spectral observations with Chandra have shed considerable light on the reasons for this pattern and recent conclusions may prove quite revealing in our understanding of accretion processes.
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Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation E. J. Schreier; Galactic X‐Ray Sources. AIP Conf. Proc. 1 May 1973; 14 (1): 650–667. https://doi.org/10.1063/1.2947172 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
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