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- W3105079968 abstract "We consider whether the hard X-ray and soft gamma-ray emission from Centaurus A is beamed radiation from the active nucleus which is Compton-scattered into our line-of-sight. We derive the spectrum and degree of polarization of scattered radiation when incident beamed radiation is scattered from a cold ($kT<<m_ec^2$) electron cloud moving with bulk relativistic motion along the jet axis, and calculate results for an unpolarized, highly-beamed incident power-law photon source. We fit the OSSE data from Centaurus A with this model and find that if the scatterers are not moving relativistically, then the angle the jet makes with respect to our line-of-sight is $61^circpm 5^circ$. We predict a high degree of polarization of the scattered radiation below $sim300$ keV. Future measurements with X-ray and gamma-ray polarimeters could be used to constrain or rule out such a scenario." @default.
- W3105079968 created "2020-11-23" @default.
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- W3105079968 date "1994-05-01" @default.
- W3105079968 modified "2023-09-25" @default.
- W3105079968 title "Is the high-energy emission from Centaurus A compton-scattered jet radiation?" @default.
- W3105079968 doi "https://doi.org/10.1086/187330" @default.
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