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HIGH-ENERGY EMISSION FROM JET–CLOUD INTERACTIONS IN AGNs.

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Title: HIGH-ENERGY EMISSION FROM JET–CLOUD INTERACTIONS IN AGNs.
Authors: ARAUDO, ANABELLA T.1,2 aaraudo@fcaglp.unlp.edu.ar, BOSCH-RAMON, VALENTÍ3 Valenti.Bosch-Ramon@mpi-hd.mpg.de, ROMERO, GUSTAVO E.1,2 romero@fcaglp.unlp.edu.ar
Source: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. Jun2010, Vol. 19 Issue 6, p931-936. 6p. 3 Graphs.
Subjects: Active galactic nuclei, Astronomy, Supermassive black holes, Compact objects (Astronomy), Astrophysics
Abstract: 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. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: 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. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1142/S0218271810016622
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        Text: English
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        PageCount: 6
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      – SubjectFull: Active galactic nuclei
        Type: general
      – SubjectFull: Astronomy
        Type: general
      – SubjectFull: Supermassive black holes
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      – SubjectFull: Compact objects (Astronomy)
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      – TitleFull: HIGH-ENERGY EMISSION FROM JET–CLOUD INTERACTIONS IN AGNs.
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            NameFull: BOSCH-RAMON, VALENTÍ
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            NameFull: ROMERO, GUSTAVO E.
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              M: 06
              Text: Jun2010
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              Y: 2010
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            – TitleFull: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology
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