Relativistic signatures at the Galactic Center

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

    Abstract

    Studies of the inner few parsecs at the Galactic Centre provide evidence of a 4×106Mʘ supermassive black hole, associated with the unusual, variable radio and infrared source Sgr A*.

    Our major aim is the study and analysis of the physical processes responsible for the variable emission from the compact radio source Sgr A*. In order to understand the physics behind the observed variability, we model the time evolution of the flare emitting region by studying light curves and spectra of emission originating at the surface of the accretion disk, close to the event horizon, near the marginally stable orbit of a rotating black hole.

    Here we discuss the methods used in the analysis of the time-variable spectral features and subsequently present preliminary modeling results.
    Original languageEnglish
    Title of host publicationDark matter in astrophysics and particle physics
    Subtitle of host publicationproceedings of the 7th International Heidelberg Conference on Dark 2009, Christchurch, New Zealand, 18 – 24 January 2009
    EditorsHans Volker Klapdor-Kleingrothaus, Irina V. Krivosheina
    Place of PublicationSingapore ; Hackensack, N.J.
    PublisherWorld Scientific Publishing
    Pages328-332
    Number of pages5
    ISBN (Electronic)9789814465748
    ISBN (Print)9789814293785
    DOIs
    Publication statusPublished - 2009
    Event7th International Heidelberg Conference on Dark Matter in Astrophysics and Particle Physics (DARK 2009) - Christichurch, New Zealand
    Duration: 18 Jan 200924 Jan 2009

    Conference

    Conference7th International Heidelberg Conference on Dark Matter in Astrophysics and Particle Physics (DARK 2009)
    CityChristichurch, New Zealand
    Period18/01/0924/01/09

    Keywords

    • Sgr A*
    • light curve
    • hot spot
    • black hole physics
    • Galactic Center
    • accretion disc
    • relativity effects

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