A PAIR PLASMA MODEL FOR PKS 0208 { 512 Igor
نویسنده
چکیده
Assuming that the enhanced MeV emission from the MeV blazar PKS 0208{ 512 observed by COMPTEL on occasions is due to annihilation in a pair plasma, we estimate parameters of the annihilation region: its size, the number density of particles, and the variability timescale. The values we nd are in accord with our present-dayknowledge of emission mechanisms operating in AGN. The constructed model implies that the blueshifted annihilation emission is an intrinsic property of all AGN jet models, and predicts an anticorrelation between the high-energy emission and the annihilation ux.
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