期刊
ASTRONOMISCHE NACHRICHTEN
卷 337, 期 1-2, 页码 47-51出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asna.201512263
关键词
galaxies: active; galaxies: individual (3C84); galaxies: jets; gamma rays: galaxies; radiation mechanisms: non-thermal; radio continuum: galaxies
资金
- European Commission [283393]
- Grants-in-Aid for Scientific Research [25800099] Funding Source: KAKEN
We investigate shell emission associated with dying radio loud AGNs. First, based on our recent work by Ito et al. (2015), we describe the dynamical and spectral evolution of shells after stopping the jet energy injection. We find that the shell emission overwhelms that of the radio lobes soon after stopping the jet energy injection because fresh electrons are continuously supplied into the shell via the forward shock, while the radio lobes rapidly fade out without jet energy injection. We find that such fossil shells can be a new class of target sources for SKA telescope. Next, we apply the model to the nearby radio source 3C84. Then, we find that the fossil shell emission in 3C84 is less luminous in the radio band while it is bright in the TeV gamma-ray band and can be detectable by CTA. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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