New observational results on the colliding wind WR+O binary WR 30a
نویسندگان
چکیده
منابع مشابه
The colliding - wind binary WR 140 : the particle acceleration laboratory
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 کاملModeling the line variations from the wind-wind shock emissions of WR 30a
The study of Wolf-Rayet stars plays an important role in evolutionary theories of massive stars. Among these objects, ∼ 20% are known to be in binary systems and can therefore be used for the mass determination of these stars. Most of these systems are not spatially resolved and spectral lines can be used to constrain the orbital parameters. However, part of the emission may originate in the in...
متن کاملParticle Acceleration in the Colliding Winds Binary Wr 140
RESUMEN Favor de proporcionar un resumen en español. If you cannot provide a spanish abstract, the editors will do this. Massive WR+O star systems produce high-temperature, shock-heated plasma where the wind of the WR star and that of its binary companion collide-the wind-collision region (WCR). The WCR is a source of thermal (e.g. hard X-rays) and non-thermal (e.g. synchrotron) emission, the l...
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...
متن کاملRadio , X - ray , and γ - ray Emission Models of the Colliding Winds Binary WR 140
We use hydrodynamical models of the wind-collision region (WCR) in the archetype colliding-wind system WR140 to determine the spatial and spectral distribution of the radio, X-ray and γ-ray emission from shock accelerated electrons. Our calculations are for orbital phase 0.837 when the observed radio emission is close to maximum. Using the observed thermal X-ray emission at this phase in conjun...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1999
ISSN: 0074-1809
DOI: 10.1017/s0074180900205706