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- W2041497844 abstract "We present an analysis of archival RXTE and BeppoSAX data of the X-ray source 4U2206+54. For the first time, high energy data (≥30 keV) are analyzed for this source. The data are well described by comptonization models (CompTT and BMC) in which seed photons with temperatures between 1.1 keV and 1.5 keV are comptonized by a hot plasma at 50 keV thereby producing a hard tail which extends up to, at least, 100 keV. We offer a new method of identification of neutron star systems using a temperature – luminosity relation. If a given X-ray source is characterized by a low bolometric luminosity and a relatively high color blackbody temperature (>1 keV) it has necessarily to be a neutron star rather than a black hole. From these arguments it is shown that the area of the soft photon source must be small ( km) and that the accretion disk, if present, must be truncated very far from the compact object. Here we report on the possible existence of a cyclotron line around 30 keV. The presence of a neutron star in the system is strongly favored by the available data." @default.
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- W2041497844 date "2004-07-29" @default.
- W2041497844 modified "2023-10-16" @default.
- W2041497844 title "Evidence for a Neutron Star in the non-pulsating massive X-ray binary 4U2206+54" @default.
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- W2041497844 doi "https://doi.org/10.1051/0004-6361:20035743" @default.
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