S E M I N A R I

Departament d'Astronomia i Astrofísica
Universitat de València

    Understanding the ultrafast TeV Variability from blazars

Dimitrios Giannios

Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, USA


Seminari del departament d'Astronomia i Astrofísica

Dimecres 30 juny 2010

12:30


Resum

Recently two blazars (PKS 2155-304 and Mrk 501) have exhibited TeV flaring on timescales 1-2 orders of magnitude shorter that the light-crossing time of the host black holes. I discuss how these observations challenge our current paradigm for blazar emission and indicate that jet instabilities are the source of the ultrafast variability. A model of reconnection minijets forming inside the jet will be presented for the blazar variability.