A dynamical and radiation semi-analytical model of pulsar-star colliding winds along the orbit: Application to LS 5039
نویسندگان
چکیده
منابع مشابه
Pulsar wind zone processes in LS 5039
Several γ-ray binaries have been recently detected by the High-Energy Stereoscopy Array (H.E.S.S.) and the Major Atmospheric Imaging Cerenkov (MAGIC) telescope. In at least two cases, their nature is unknown. In this paper we aim to provide the details of a theoretical model of close γ-ray binaries containing a young energetic pulsar as compact object, earlier presented in recent Letters. This ...
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HESS has recently detected Very High Energy (VHE) γ-ray emission and its orbital modulation for the high mass X-ray binary and microquasar candidate LS 5039. Part, but not all of this orbital modulation can be attributed to the γγ absorption of the VHE γ-rays in the intense photon field of the stellar companion. We have applied a time-dependent leptonic model incorporating a full KleinNishina t...
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We present a 3D dynamical model of the orbital induced curvature of the wind-wind collision region in binary star systems. Momentum balance equations are used to determine the position and shape of the contact discontinuity between the stars, while further downstream the gas is assumed to behave ballistically. An archimedean spiral structure is formed by the motion of the stars, with clear rese...
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Recent High Energy Stereoscopic System (HESS) observations show that microquasars in highmass systems are sources of very high energy γ-rays. A leptonic jet model for microquasar γ-ray emission is developed. Using the head-on approximation for the Compton cross section and taking into account angular effects from the star’s orbital motion, we derive expressions to calculate the spectrum of γ ra...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2020
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/202038417