Binary pulsar B1259-63 spectrum evolution: detailed study
نویسندگان
چکیده
منابع مشابه
Timing of the Binary Pulsar PSR B1259−63
Timing of PSR B1259−63, the first radio pulsar discovered to have a massive main-sequence companion, has been carried out since 1990. The timing is complicated because the orbital period is very long, the pulsar is eclipsed for 40 days around periastron, the pulsar has significant timing noise and also has been seen to glitch. A model for the timing data based on spin-orbit coupling no longer p...
متن کاملEvidence for Shock Acceleration in the Binary Pulsar System Psr B1259-63
The PSR B1259-63 system (Johnston et al. 1992, 1994) was observed near periastron by the Compton Gamma-Ray Observatory in January 1994. This system contains a rapidly rotating pulsar and a Be star in a highly eccentric binary orbit. We report the discovery by the OSSE instrument of unpulsed emission with a hard power-law spectrum between 50 and 200 keV from the direction of this system. Neither...
متن کاملDiffractive Scintillation of the Pulsar PSR B1259-63
PSR B1259–63 is in a highly eccentric 3.4 yr orbit around the Be-star SS2883. The system is located in the direction of the Sagittarius-Carina spiral arm at a distance of ∼1.5 kpc. We have made scintillation observations of the pulsar far from periastron at 4.8 GHz and 8.4 GHz, determining the diffractive bandwidth, ∆νd, and timescale, ∆td, at both frequencies. We find no dependency on orbital ...
متن کامل303 and Psr B1259-63
Three binaries are now established sources of emission at very high energies (>10 eV). They are composed of a massive star and a compact object. The emission can be due to the interaction of the relativistic wind from a young ms pulsar with the stellar wind of the companion (Maraschi & Treves, 1981), by which rotation-power ends up as non-thermal flux. Variations at VHE energies are explained a...
متن کاملGamma-rays from binary system with energetic pulsar and Be star with aspherical wind: PSR B1259-63/SS2883
At least one massive binary system containing an energetic pulsar, PSR B125963/SS2883, has been recently detected in the TeV γ-rays by the HESS telescopes. These γ-rays are likely produced by particles accelerated in the vicinity of the pulsar and/or at the pulsar wind shock, in comptonization of soft radiation from the massive star. However, the process of γ-ray production in such systems can ...
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ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2012
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921312023952