Universität zu Köln

Multi-frequency study of relativistic jets in active galactic nuclei

Sokolovskiy, Kirill V. (2010) Multi-frequency study of relativistic jets in active galactic nuclei. PhD thesis, Universität zu Köln.

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    The thesis at hand presents the results of multi-frequency Very Long Baseline Interferometry (VLBI) observations of jets associated with active galactic nuclei. The results are discussed in the context of broad-band jet emission models and used to constrain physical properties of the parsec-scale core -- inner part of the jet which is likely related to the observed high-energy emission. The analysis of the frequency-dependent core position shift supports interpretation of the parsec-core as the integral part of the jet; the observed core position is determined by opacity. Synchrotron self-absorption is found to be the dominating opacity mechanism in the observed sources. A comparison between radio sources possessing jets aligned closely to the line of sight with those aligned at large angles to it supports the idea that the bright extragalactic gamma-ray sources are associated with jets affected by relativistic beaming.

    Item Type: Thesis (PhD thesis)
    Sokolovskiy, Kirill V.ksokolov@mpifr-bonn.mpg.de
    URN: urn:nbn:de:hbz:38-41355
    Subjects: Physics
    Faculty: Mathematisch-Naturwissenschaftliche Fakultät
    Divisions: Mathematisch-Naturwissenschaftliche Fakultät > I. Physikalisches Institut
    Language: English
    Date: December 2010
    Date Type: Completion
    Date of oral exam: 01 February 2011
    Full Text Status: Public
    Date Deposited: 26 Apr 2011 17:18:20
    NameAcademic Title
    Shao, YapingProf. Dr.
    Eckart, AndreasProf. Dr.
    Zensus, J. AntonProf. Dr.
    URI: http://kups.ub.uni-koeln.de/id/eprint/4135

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