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Discerning the location of the gamma-ray emission region in blazars from multi-messenger observations
Ivan Agudo, Alan P. Marscher, Svetlana G. Jorstad +1
Relativistic jets in AGN in general, and in blazars in particular, are the most energetic and among the most powerful astrophysical objects known so far. Their relativistic nature…
Multiwavelength Variations of 3C 454.3 during the November 2010 to January 2011 Outburst
Ann E. Wehrle, Alan P. Marscher, Svetlana G. Jorstad +6
We present multiwavelength data of the blazar 3C 454.3 obtained during an extremely bright outburst from November 2010 through January 2011. These include flux density measurements…
Multiwavelength Intraday Variability of the BL Lac S5 0716+714
Alok C. Gupta, T. P. Krichbaum, P. J. Wiita +31
We report results from a 1 week multi-wavelength campaign to monitor the BL Lac object S5 0716+714 (on December 9-16, 2009). In the radio bands the source shows rapid (~ (0.5-1.5)…
Multiwavelength Spectral Study of 3C 279 in the Internal Shock Scenario
Manasvita Joshi, Svetlana Jorstad, Alan Marscher +6
We have observed 3C~279 in a gamma-ray flaring state in November 2008. We construct quasi-simultaneous spectral energy distributions (SEDs) of the source for the flaring period of…
Parsec-Scale Jet Behavior of the Quasar 3C 454.3 during the High Gamma-Ray States in 2009 and 2010
S. G. Jorstad, A. P. Marscher, M. Joshi +7
We analyze total and polarized intensity images of the quasar 3C 454.3 obtained monthly with the VLBA at 43 GHz within the ongoing Boston U. monitoring program of gamma-ray blazars…
Relation between Events in the Millimeter-wave Core and Gamma-ray Outbursts in Blazar Jets
A. P. Marscher, S. G. Jorstad, I. Agudo +2
Analysis of comprehensive monitoring of 34 gamma-ray bright quasars, BL Lac objects, and radio galaxies reveals a close connection between events in the millimeter-wave emission im…