output
19912026
Showing 2012 · astro-ph.HEShow all

8 papers · 2 filters

astro-ph.HE2012★ 102 cited

Rapid TeV Gamma-Ray Flaring of BL Lacertae

T. Arlen, T. Aune, M. Beilicke +83

We report on the detection of a very rapid TeV gamma-ray flare from BL Lacertae on 2011 June 28 with the Very Energetic Radiation Imaging Telescope Array System (VERITAS). The flar…

astro-ph.HE2012★ 47 cited

VLBA monitoring of Mrk 421 at 15 GHz and 24 GHz during 2011

R. Lico, M. Giroletti, M. Orienti +13

High-resolution radio observations are ideal for constraining the value of physical parameters in the inner regions of active-galactic-nucleus jets and complement results on multiw…

astro-ph.HE2012★ 89 cited

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…

astro-ph.HE2012★ 65 cited

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)…

astro-ph.HE2012★ 64 cited

Variability of the blazar 4C 38.41 (B3 1633+382) from GHz frequencies to GeV energies

C. M. Raiteri, M. Villata, P. S. Smith +74

The quasar-type blazar 4C 38.41 (B3 1633+382) experienced a large outburst in 2011, which was detected throughout the entire electromagnetic spectrum. We present the results of low…

astro-ph.HE2012★ 194 cited

The structure and emission model of the relativistic jet in the quasar 3C 279 inferred from radio to high-energy gamma-ray observations in 2008-2010

M. Hayashida, G. M. Madejski, K. Nalewajko +90

We present time-resolved broad-band observations of the quasar 3C 279 obtained from multi-wavelength campaigns conducted during the first two years of the Fermi Gamma-ray Space Tel…

astro-ph.HE2012★ 45 cited

Comparison of ejection events in the jet and accretion disc outflows in 3C 111

F. Tombesi, R. M. Sambruna, A. P. Marscher +3

We present a comparison of the parameters of accretion disc outflows and the jet of the broad-line radio galaxy 3C 111 on sub-pc scales. We make use of published X-ray observations…

astro-ph.HE2012★ 33 cited

A recollimation shock 80 mas from the core in the jet of the radio galaxy 3C120: Observational evidence and modeling

Iván Agudo, José L. Gómez, Carolina Casadio +2

We present Very Long Baseline Array observations of the radio galaxy 3C120 at 5, 8, 12, and 15 GHz designed to study a peculiar stationary jet feature (hereafter C80) located ~80 m…