CHANDRAHETG OBSERVATIONS OF THE COLLIDING STELLAR WIND SYSTEM WR 147
نویسندگان
چکیده
منابع مشابه
Colliding Stellar Wind Models with Nonequilibrium Ionization: X-rays from WR 147
The effects of nonequilibrium ionization are explicitly taken into account in a numerical model which describes colliding stellar winds (CSW) in massive binary sytems. This new model is used to analyze the most recent X-ray spectra of the WR+OB binary system WR 147 . The basic result is that it can adequately reproduce the observed X-ray emission (spectral shape, observed flux) but some adjustm...
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We study the dynamics of stellar wind bubbles around hydrogen-deficient stars using numerical simulations with timeand ion dependent cooling. We consider two types of hydrogen-deficient stars, massive WR stars, producing Ring Nebulae, and low mass [WR] stars, producing Planetary Nebulae. We show that for the Planetary Nebulae, the different cooling properties of the hydrogen-deficient wind lead...
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WR+O star binary systems exhibit synchrotron emission arising from relativistic electrons accelerated where the wind of the WR star and that of its massive binary companion collide-the wind-collision region (WCR). These " colliding-wind " binaries (CWB), provide an excellent laboratory for the study of particle acceleration, with the same physical processes as observed in SNRs, but at much high...
متن کاملHigh resolution radio studies of WR colliding-wind systems
High resolution radio observations with MERLIN and the VLA spatially resolve the thermal and non-thermal emission in WR147 and WR146. In both of these systems, the WR stars have massive companions. The relative positions of the radio emission and the stellar components is consistent with the non-thermal emission originating in the region where the two stellar winds in the system collide. In tot...
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We present results of a ≈20 ksec X-ray observation of the Wolf-Rayet (WR) binary system WR 147 obtained with XMM-Newton. Previous studies have shown that this system consists of a nitrogen-type WN8 star plus an OB companion whose winds are interacting to produce a colliding wind shock. X-ray spectra from the pn and MOS detectors confirm the high extinction reported from IR studies and reveal ho...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2010
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/721/1/518