HIGH-ENERGY EMISSION FROM JET-CLOUD INTERACTIONS IN AGNs

被引：2

作者：

Araudo, Anabella T. ^{[1
,2
]}

Bosch-Ramon, Valenti ^{[3
]}

Romero, Gustavo E. ^{[1
,2
]}

机构：

[1] Inst Argentino Radioastron CCT La Plata CONICET, RA-1894 Buenos Aires, DF, Argentina

[2] Univ Nacl La Plata, Fac Ciencias Astron & Geofis, RA-1900 La Plata, Argentina

[3] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2010年 / 19卷 / 06期

关键词：

Galaxies: active; Centaurus A; radiation mechanism: nonthermal;

D O I：

10.1142/S0218271810016622

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Active galactic nuclei present continuum and line emission. The emission lines are originated by gas located close to the central supermassive black hole. Some of these lines are broad, and would be produced in a small region called broad-line region. This region could be formed by clouds surrounding the central black hole. In this work, we study the interaction of such clouds with the base of the jets in active galactic nuclei, and we compute the produced high-energy emission. We focus on sources with low luminosities in the inner jet regions, to avoid strong gamma-ray absorption. We find that the resulting high-energy radiation may be significant in Centaurus A. Also, this phenomenon might be behind the variable gamma-ray emission detected in M87, if very large dark clouds are present. The detection of jet-cloud interactions in active galactic nuclei would give information on the properties of the jet base and the very central regions.

引用

页码：931 / 936

页数：6

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