Discovery of Very High Energy Gamma Rays Associated with an X-ray Binary
Discovery of Very High Energy Gamma Rays Associated with an X-ray Binary
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DOI：
10.1126/science.1113764
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发表时间：
2005-07
期刊：
影响因子：
56.9
通讯作者：
H. C. Aharonian;et al.
中科院分区：
文献类型：
--
作者：
H. C. Aharonian;et al.
X-ray binaries are composed of a normal star in orbit around a neutron star or stellar-mass black hole. Radio and x-ray observations have led to the presumption that some x-ray binaries called microquasars behave as scaled-down active galactic nuclei. Microquasars have resolved radio emission that is thought to arise from a relativistic outflow akin to active galactic nuclei jets, in which particles can be accelerated to large energies. Very high energy γ-rays produced by the interactions of these particles have been observed from several active galactic nuclei. Using the High Energy Stereoscopic System, we find evidence for gamma-ray emission of >100 gigaelectron volts from a candidate microquasar, LS 5039, showing that particles are also accelerated to very high energies in these systems.
