A pair plasma model for PKS 0208-512

被引：0
作者：
Moskalenko, IV [1 ]
Collmar, W
机构：
[1] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany
[2] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia
来源：
ASTROPHYSICAL LETTERS & COMMUNICATIONS | 1999年 / 39卷 / 1-6期
关键词：
galaxies : active; AGN : individual (PKS 0208-512); gamma rays : theory;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 find are in accord with our present-day knowledge 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 flux.
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收藏
页码：581 / 584
页数：4
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