Results 21 to 30 of about 497,978 (250)
Generation of X-Ray Fluctuations in X-Ray Binaries [PDF]
International Astronomical Union Colloquium, 1996 AbstractShort-term aperiodic fluctuations with 1/f-like power spectral density (PSD), where f is the frequency, are characteristics of X-ray radiation from X-ray binaries. To investigate a mechanism creating fluctuations, we construct a cellular-automaton model for accretion disks based on the concept of self organized criticality (SOC). In this model,
S. Mineshige, M. Takeuchi, H. Negoro
openaire +2 more sources
Discovery of a 3.6-hr Eclipsing Luminous X-Ray Binary in the Galaxy NGC 4214 [PDF]
, 2006 We report the discovery of an eclipsing X-ray binary with a 3.62-hr period within 24" of the center of the dwarf starburst galaxy NGC 4214. The orbital period places interesting constraints on the nature of the binary, and allows for a few very different
Ghosh, Kajal K. +5 more
core +2 more sources
Be Components in X-Ray Binaries [PDF]
Symposium - International Astronomical Union, 1982 The Be X-ray binaries show rather weak and variable X-rays. They can be divided into two types, the transient sources and the permanent sources. Two ranges for the X-ray luminosity Lx can be discerned: a) Lx~1034erg s−1 (X Per, λ Cas, 2S0114+65, all permanent sources); b) Lx~1036erg s−1.
M. Burger +3 more
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Deep Search for Gamma-Ray Emission from the Accreting X-Ray Pulsar 1A 0535+262
The Astrophysical Journal, 2023 Binary systems are a well-established subclass of gamma-ray sources. The high mass X-ray binary pulsar 1A 0535+262 has been considered to be a possible gamma-ray emitter for a long time, although former gamma-ray searches using the Fermi Large Area ...
X. Hou +4 more
doaj +1 more source
The evolution of ultracompact X-ray binaries [PDF]
Astronomy & Astrophysics, 2012 18 pages, 13 figures.
Gijs Nelemans +5 more
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Populating the Galaxy with low-mass X-ray binaries [PDF]
, 2006 We perform binary population synthesis calculations to investigate the incidence of low-mass X-ray binaries and their birth rate in the Galaxy. We use a binary evolution algorithm that models all the relevant processes including tidal circularization and
Hurley, Jarrod R., Kiel, Paul D.
core +3 more sources
Constraint on the Accretion of NGC 6946 X-1 Using Broadband X-Ray Data
The Astrophysical Journal, 2023 We analyze broadband X-ray data of NGC 6946 X-1 and probe plausible accretion scenarios in this ULX. NGC 6946 X-1 is a persistent soft source with broadband continuum spectra described by two thermal disk components. The cool accretion disk temperature T
Tanuman Ghosh, Vikram Rana
doaj +1 more source
Integral Fluxes of Neutrinos and Gamma-Rays Emitted from Neighboring X-ray Binaries
Universe, 2023 Astrophysical plasma ejections (jets) are formed and powered by black holes that accrete material from their companion star in binary systems. Black hole X-ray binary systems constitute potential powerful galactic and extragalactic neutrino and gamma-ray
Odysseas Kosmas +2 more
doaj +1 more source
Hydrogen-triggered X-Ray Bursts from SAX J1808.4−3658? The Onset of Nuclear Burning
The Astrophysical Journal, 2023 We present a study of weak, thermonuclear X-ray bursts from the accreting millisecond X-ray pulsar SAX J1808.4−3658. We focus on a burst observed with the Neutron Star Interior Composition Explorer on 2019 August 9, and describe a similar burst observed ...
Sierra Casten +2 more
doaj +1 more source
NuSTAR Observations of X-ray Binaries [PDF]
Proceedings of 10th INTEGRAL Workshop: A Synergistic View of the High-Energy Sky — PoS(Integral2014), 2015 From the proceedings of the 10th INTEGRAL ...
Tomsick, John A. +11 more
openaire +6 more sources