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A self-consistent interpretation of the GeV-TeV emission from a distant blazar PKS 1424+240
Yan DH(闫大海); Yan, DH; Kalashev, O; Zhang, L; Zhang, SN; Zhang SN(张双南)
2015
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号449期号:1页码:1018-1023
摘要We propose a scenario for self-consistent interpretation of GeV-TeV spectrum of a distant blazar PKS 1424+ 240. In this scenario, ultrahigh energy (UHE) protons are assumed to exist in the blazar jet and produce gamma-rays through synchrotron emission emitted by relativistic protons and pair cascades (resulted from p gamma interaction); meanwhile, some of these UHE protons may escape from the jet and are injected into intergalactic space. Therefore, we assume that UHE cosmic rays (UHECRs) originate from relativistic protons in the jet and use energy-independent escape time-scale to obtain UHECR injection spectrum. Both contributions of gamma-rays injected by the source and secondary gamma-rays produced in interactions of UHECRs emitted by the blazar with photon background during their propagation through intergalactic space are calculated. Our results show that this scenario is able to reproduce the GeV-TeV spectrum of PKS 1424+ 240 self-consistently in a broad range of redshifts 0.6 < z < 1.3. The required relativistic jet power L-p similar or equal to 3 x 10(46) erg s(-1) only moderately depends on the assumed source redshift, while the proton escape time-scale (and the injected UHECR luminosity) strongly depends on z. We compare the integral TeV fluxes predicted in our scenario with the sensitivity of the planned Cherenkov Telescope Array, and discuss the implications to future observations.
文章类型Article
关键词radiation mechanisms: non-thermal cosmic rays BL Lacertae objects: individual: PKS 1424+240 gamma-rays: galaxies
学科领域Astronomy & Astrophysics
DOI10.1093/mnras/stv363
收录类别SCI
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000355345600073
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228476
专题粒子天体物理中心
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Yan DH,Yan, DH,Kalashev, O,et al. A self-consistent interpretation of the GeV-TeV emission from a distant blazar PKS 1424+240[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(1):1018-1023.
APA 闫大海,Yan, DH,Kalashev, O,Zhang, L,Zhang, SN,&张双南.(2015).A self-consistent interpretation of the GeV-TeV emission from a distant blazar PKS 1424+240.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(1),1018-1023.
MLA 闫大海,et al."A self-consistent interpretation of the GeV-TeV emission from a distant blazar PKS 1424+240".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.1(2015):1018-1023.
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