The broad-band spectrum of Cyg X-2 with INTEGRAL
作者： G. Lavagetto , T. Di Salvo , M. Falanga , R. Iaria , N. R. Robba
DOI: 10.1051/0004-6361:20053189
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摘要: We study the broad band (3-100 keV) spectrum of Cygnus X-2 with INTEGRAL. find that is well fitted by a Comptonized component seed-photons temperature ~ 1 keV, an electron 3 keV and optical depth tau 8. Assuming spherical geometry, radius emitting region 17 km. The source shows no hard X-ray emission; it was detected only at sigma level above 40 keV. also analyzed public ISGRI data Cyg to investigate presence component. report possible emission in one set.
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