Results 51 to 60 of about 497,978 (250)
CCD Observations of X-Ray Binaries [PDF]
International Astronomical Union Colloquium, 1987 AbstractDuring two observation periods in 1984 and 1985 we monitored the faint optical counterparts of seven X-ray binaries with a CCD camera attached to the Cassegrain-focus of the 2.2 m telescope at Calar Alto , Spain. The observation periods were 1984, September 25–27 , and 1985, August 8–15.The transient sources 4U0042+32 and 4U0115+63 showed no ...
M. Gottwald +3 more
openaire +3 more sources
ROSAT X-ray sources in the field of the LMC. II.Statistics of background AGN and X-ray binaries [PDF]
, 2002 About 200 X-ray sources from a sample of spectrally hard ROSAT PSPC sources, given in the catalog of Haberl & Pietsch (1999), and observed in a ~60 square degree field of the LMC during several archival pointed observations with a wide range of exposure times have been reanalyzed.
arxiv +1 more source
The population of massive X-ray binaries I. The Large Magellanic Cloud [PDF]
Astron.Astrophys. 385 (2002) 517, 2002 We present high resolution blue spectroscopy of an almost complete sample of optical counterparts to massive X-ray binaries in the Large Magellanic Cloud (LMC) and derive their spectral classification. We find an spectral type B0II for the optical counterpart to RX J0532.5-6551, confirming it as the first wind-fed massive X-ray binary in the LMC.
arxiv +1 more source
Pulsed Iron Line Emission from the First Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124
The Astrophysical JournalWe report the phase-resolved spectral results of the first Galactic pulsating ultraluminous X-ray source (PULX) Swift J0243.6+6124, modeling its 2017–2018 outburst peak using data collected by the Hard X-ray Modulation Telescope (Insight-HXMT). The broad
Y. X. Xiao +16 more
doaj +1 more source
Long-Term Studies of Cyg X-3 High-Mass X-ray Binary
Universe, 2022 Cyg X-3 is the famous binary system containing a black hole that is actively studied through a wide range of the electromagnetic spectrum, from radio wavelengths to ultra-high-energy gamma-rays, but still not well-understood.
Vera G. Sinitsyna, Vera Yu. Sinitsyna
doaj +1 more source
A catalogue of low-mass X-ray binaries in the Galaxy, LMC, and SMC (Fourth edition) [PDF]
Astron.Astrophys.469:807,2007, 2007 We present a new edition of the catalogue of the low-mass X-ray binaries in the Galaxy and the Magellanic Clouds. The catalogue contains source name(s), coordinates, finding chart, X-ray luminosity, system parameters, and stellar parameters of the components and other characteristic properties of 187 low-mass X-ray binaries, together with a ...
arxiv +1 more source
Population III X-Ray Binaries [PDF]
Proceedings of Frontier Research in Astrophysics – II — PoS(FRAPWS2016), 2017 19 pages, 8 figures, conference title : Frontier Research in Astrophysics - II (https://pos.sissa.it/269/)
Rosalba Perna +2 more
openaire +3 more sources
Multiwavelength Characterization of the High-mass X-Ray Binary Population of M33
The Astrophysical Journal, 2023 We present multiwavelength characterization of 65 high-mass X-ray binary (HMXB) candidates in M33. We use the Chandra ACIS survey of M33 (ChASeM33) catalog to select hard X-ray point sources that are spatially coincident with UV-bright point-source ...
Margaret Lazzarini +14 more
doaj +1 more source
Binary X-ray Sources in Massive Brans–Dicke Gravity
Universe, 2022 This study focuses on the X-ray emission of low-mass black hole binaries in massive Brans–Dicke gravity. First, we compute the accretion disk with the well-known Shakura–Sunyaev model for an optically thick, cool, and geometrically thin disk.
Grigoris Panotopoulos +2 more
doaj +1 more source
X-ray Emission from the Binary Central Stars of the Planetary Nebulae HFG 1, DS 1, and LoTr 5
, 2010 Close binary systems undergoing mass transfer or common envelope interactions can account for the morphological properties of some planetary nebulae. The search for close binary companions in planetary nebulae is hindered by the difficulty of detecting ...
Arnaud +43 more
core +1 more source