The reduction of distant blazars’ inverse Compton cascade emission by plasma instability induced beam plateauing
The reduction of distant blazars’ inverse Compton cascade emission by plasma instability induced beam plateauing
复制标题
通过等离子体不稳定性引起的束流平台减少远距离耀变体逆康普顿级联发射
DOI:
10.1093/mnras/stv232
复制
发表时间:
2015
影响因子:
4.8
通讯作者:
Schlickeiser
中科院分区:
文献类型:
--
作者:
Menzler;Schlickeiser
The attenuation of TeV γ-rays from distant blazars by the extragalactic background light produces collimated relativistic electron–positron pair beams. The pair beams traversing the intergalactic medium are unstable to linear two-stream instabilities of both electrostatic and electromagnetic nature. We investigate the case of weak blazars where the back reaction of generated electrostatic turbulence leads to a parallel plateauing of the electron energy spectrum. We determine the inverse Compton cascade flux reduction above a certain normalized energyxlresulting from the incorporation of plasma effects on the beam particles distribution functions. A rational functionRS(xl) is presented, which gives the exact reduction factor in the steady-state case as well a good approximation in the flaring case. For a typical blazar scenario, the cascade flux reduction factor above 10 GeV is ∼0.1. Application of our findings to the spectrum of 1ES 0229+200 shows that the incorporation of plasma effects leads to a natural explanation of the reduced observed GeV flux. Claims on the lower bound of the intergalactic magnetic field strengths, made by several authors to explain the flux reduction while neglecting plasma effects, are thus put into question.
登录
查看更多内容
影响因子:
6.5
作者:
R. Schlickeiser
通讯作者:
R. Schlickeiser
影响因子:
8.6
作者:
R. Schlickeiser
通讯作者:
R. Schlickeiser
影响因子:
4.9
作者:
Yoshida;M;谷口義明
通讯作者:
谷口義明
影响因子:
2.2
作者:
P. Yoon;R. Schlickeiser;U. Kolberg
通讯作者:
U. Kolberg
DOI:
10.1088/0004-637x/778/1/39
发表时间:
2013
期刊:
The Astrophysical Journal
影响因子:
--
作者:
R. Schlickeiser;T. Felten
通讯作者:
T. Felten