Workshop on stellar tidal disruption

Glennys R. Farrar

    Research output: Chapter in Book/Report/Conference proceedingChapter


    The past year has seen major advances in the observational status of Stellar Tidal Disruption, with the discovery of two strong optical candidates in archived SDSS data and the real-time X-ray detection of Swift J1644+57, plus rapid radio and optical follow-up establishing it as a probable Tidal Disruption Flare (TDF) in blazar mode. These observations motivated a workshop devoted to discussion of such events and of the theory of their emission and flare rate. Observational contributions included a presentation of Swift J2058+05 (a possible second example of a TDF in blazar mode), reports on the late-time evolution and X-ray variability of the two Swift events, and a proposal that additional candidates may be evidenced by spectral signatures in SDSS. Theory presentations included models of radio emission, theory of light curves and the proposal that GRB101225A may be the Galactic tidal disruption of a neutron star, an interpretation of Swift J1644+57 as due to the disruption of a white dwarf instead of main-sequence star, calculation of the dependence of the TDF rate on the spin of the black hole, and analysis of the SDSS events, fitting their SEDs to profiles of thoretical emission from accretion disks and showing that their luminosity and rate are consistent with the proposal that TDEs can be responsible for UHECR acceleration.

    Original languageEnglish (US)
    Title of host publicationNew Horizons in Time-Domain Astronomy
    EditorsElizabeth Griffin, Robert J. Hanisch, Robert L. Seaman
    Number of pages8
    StatePublished - Sep 2011

    Publication series

    NameProceedings of the International Astronomical Union
    ISSN (Print)1743-9213
    ISSN (Electronic)1743-9221


    • AGN
    • Black Hole
    • Flare
    • SNe
    • Tidal Disruption

    ASJC Scopus subject areas

    • Medicine (miscellaneous)
    • Astronomy and Astrophysics
    • Nutrition and Dietetics
    • Public Health, Environmental and Occupational Health
    • Space and Planetary Science


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