Gamma-rays from binary system with energetic pulsar and Be star with aspherical wind: PSR B1259-63/SS2883
arXiv:0801.3516 · doi:10.1111/j.1365-2966.2008.13002.x
Abstract
At least one massive binary system containing an energetic pulsar, PSR B1259-63/SS2883, has been recently detected in the TeV gamma-rays by the HESS telescopes. These gamma-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 gamma-ray production in such systems can be quite complicated due to the anisotropy of the radiation field, complex structure of the pulsar wind termination shock and possible absorption of produced gamma-rays which might initiate leptonic cascades. In this paper we consider in detail all these effects. We calculate the gamma-ray light curves and spectra for different geometries of the binary system PSR B1259-63/SS2883 and compare them with the TeV gamma-ray observations. We conclude that the leptonic IC model, which takes into account the complex structure of the pulsar wind shock due to the aspherical wind of the massive star, can explain the details of the observed gamma-ray light curve.
12 pages, 11 figures, accepted for publication in MNRAS
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- High-Energy emissions from the Pulsar/Be binary system PSR J2032+4127/MT91 213
- X-ray irradiation of the winds in binaries with massive components
- Probing the Pulsar Wind in the gamma-ray Binary System PSR B1259-63/SS 2883
- Wind inhibition by X-ray irradiation in HMXBs: the influence of clumping and the final X-ray luminosity
- Modelling the multi-wavelength emissions from PSR B1259-63/LS 2883: the effects of the stellar disc on shock radiations
- A model for the two component gamma-ray spectra observed from the gamma-ray binaries
- High energy gamma-ray emission from compact galactic sources in the context of observations with the next generation Cherenkov Telescope Arrays
- Magnetorotational instability in decretion disks of critically rotating stars and the outer structure of Be and Be/X-ray disks
- Gamma-rays from nebulae around binary systems containing energetic rotation powered pulsars
- Evolution of the extended X-ray emission from the PSR B1259-63/LS 2883 binary in the 2014-2017 binary cycle
- Gamma-rays from the binary system containing PSR J2032+4127 during its periastron passage
- GeV emission of gamma-ray binary with pulsar scenario
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- Pair Cascades in the Disk Environment of the Binary System PSR B1259-63/LS 2883