Abstract
view Abstract Citations (14) References (28) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS X-Ray Emission from 4U 2129+47 (=V1727 Cygni) in Quiescence Garcia, Michael R. Abstract Observations with the ROSAT HRI allow detection of weak X-ray flux from the low-mass X-ray binary (LMXB) 4U 2129+47 during its current quiescent state. The quiescent luminosity is similar to that seen in several other quiescent LMXBs containing neutron stars. The quiescent X-ray light curve may not show the eclipse seen when the source was in its high state, which would indicate that the enhanced vertical structure present in the disk during the high state has collapsed. This in turn provides support for the idea that the vertical structure in LMXB accretion disks is a consequence of high X-ray luminosity. A comparison of the absorption of low-energy X-rays due to the interstellar medium (determined from Einstein IPC observations) and the optical extinction does not rule out the triple system hypothesis. Publication: The Astrophysical Journal Pub Date: November 1994 DOI: 10.1086/174823 Bibcode: 1994ApJ...435..407G Keywords: Accretion Disks; Eclipsing Binary Stars; Spaceborne Astronomy; Stellar Mass Accretion; Stellar Spectra; X Ray Astronomy; X Ray Binaries; X Ray Spectra; Interstellar Matter; Neutron Stars; Rosat Mission; Stellar Luminosity; Astronomy; ACCRETION; ACCRETION DISKS; STARS: BINARIES: ECLIPSING; STARS: INDIVIDUAL CONSTELLATION NAME: V1727 CYGNI; X-RAYS: STARS full text sources ADS | data products SIMBAD (6)
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