Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 85: Gammaastronomie 5
T 85.7: Vortrag
Donnerstag, 7. März 2013, 18:15–18:30, HSZ-E05
Detailed Study of the Broadband Emission of the classical TeV-blazar Mrk421 during Flaring Activity in March 2010 — •Shangyu Sun1, David Paneque1, and Andrea Boller2 — 1Max Planck Institute for Physics, Munich, Germany — 2Institute for Particle Physics, Swiss Federal Institute of Technology, Zurich, Swiss
We are performing an unprecedentedly long and dense monitoring of the broadband (radio to TeV) emission from the classical TeV blazar Mrk421. This object is among the brightest X-ray/TeV blazars in the sky and among the few sources whose Spectral Energy Distribution (SED) can be completely characterized by the current instruments. This is a multi-year, multi-instrument program involving the participation of VLBA, Swift, RXTE, MAGIC, VERITAS, F-GAMMA, GASP-WEBT, and other collaborations and instruments which are providing the most detailed temporal and energy coverage on this source to date. At the conference we will report about the flaring activity observed in March 2010. We will show that the complete SED can be resolved on timescales of one day, which allows for unprecedented studies on the temporal evolution of the broadband emission of this object. We found that, even though a one-zone Synchrotron Self-Compton model can describe reasonably well the evolution of the SEDs, it is more appropriate to use a model with two blobs: one blob (with fixed parameters) describing the quiescent emission, and the other (10 times smaller) blob describing the flaring activity.