High-energy γ-ray Emission from Microquasars: LS 5039 and LS I +61 303
نویسندگان
چکیده
منابع مشابه
High-energy Γ-ray Emission from Microquasars: Ls 5039 and Ls I +61 303
The possible associations between the microquasars LS 5039 and LS I +61 303 and the EGRET sources 3EG J1824−1514 and 3EG J0241+6103 suggest that microquasars could also be sources of high-energy γ-rays. In this work, we present a detailed numerical inverse Compton (IC) model, based on a microquasar scenario, that reproduces the high-energy γ-ray spectra and variability observed by EGRET for the...
متن کاملHadronic High-energy Gamma-ray Emission from the Microquasar Ls I +61 303
We present a hadronic model for gamma-ray production in the microquasar LS I +61 303. The system is formed by a neutron star that accretes matter from the dense and slow equatorial wind of the Be primary star. We calculate the gamma-ray emission originated in pp interactions between relativistic protons in the jet and cold protons from the wind. After taking into account opacity effects on the ...
متن کاملVariable very-high-energy gamma-ray emission from the microquasar LS I +61 303.
Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and can be used to elucidate the physics of relativistic jets. We report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LS I 61 + 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, which sug...
متن کاملSpectral energy distribution of the γ - ray microquasar LS 5039
The microquasar LS 5039 has recently been detected as a source of very high energy (VHE) γ-rays. This detection, that confirms the previously proposed association of LS 5039 with the EGRET source 3EG J1824−1514, makes of LS 5039 a special system with observational data covering nearly all the electromagnetic spectrum. In order to reproduce the observed spectrum of LS 5039, from radio to VHE γ-r...
متن کاملHigh - energy gamma - ray emission from the inner jet of LS I + 61 303 : the hadronic contribution revisited
LS I+61 303 has been detected by the Cherenkov telescope MAGIC at very high energies, presenting a variable flux along the orbital motion with a maximum clearly departed from the periastron passage. In the light of the new observational constraints, we revisit the discussion of the production of high-energy gamma rays from particle interactions in the inner jet of this system. The hadronic cont...
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ژورنال
عنوان ژورنال: Chinese Journal of Astronomy and Astrophysics
سال: 2005
ISSN: 1009-9271
DOI: 10.1088/1009-9271/5/s1/133