activity
20012026
most citedA change in the optical polarization associated with a gamma-ray flare in the blazar 3C 279

334 citations · 3.4k across the 83 of their papers we have counts for

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14 papers · 1 filter

astro-ph.HE2020★ 14 cited

New high-frequency radio observations of the Cygnus Loop supernova remnant with the Italian radio telescopes

S. Loru, A. Pellizzoni, E. Egron +19

Supernova remnants (SNRs) represent a powerful laboratory to study the Cosmic-Ray acceleration processes at the shocks, and their relation to the properties of the circumstellar me…

astro-ph.HE2015★ 45 cited

The WEBT campaign on the BL Lac object PG 1553+113 in 2013. An analysis of the enigmatic synchrotron emission

C. M. Raiteri, A. Stamerra, M. Villata +2

A multifrequency campaign on the BL Lac object PG 1553+113 was organized by the Whole Earth Blazar Telescope (WEBT) in 2013 April-August, involving 19 optical, two near-IR, and thr…

astro-ph.HE2015★ 41 cited

Multiwavelength behaviour of the blazar OJ 248 from radio to γ-rays

M. I. Carnerero, C. M. Raiteri, M. Villata +4

We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtain…

astro-ph.HE2014★ 75 cited

Multiwavelength observations of Mrk 501 in 2008

MAGIC Collaboration, J. Aleksić, S. Ansoldi +256

Mrk 501 is one of the brightest blazars at TeV energies and has been extensively studied since its first VHE detection in 1996. Our goal is to characterize in detail the source gam…

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★ 65 cited

Multi-wavelength observations of blazar AO 0235+164 in the 2008-2009 flaring state

M. Ackermann, M. Ajello, J. Ballet +208

The blazar AO 0235+164 (z = 0.94) has been one of the most active objects observed by Fermi Large Area Telescope (LAT) since its launch in Summer 2008. In addition to the continuou…

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.HE2011★ 35 cited

Multiwavelength Observations of the Gamma-Ray Blazar PKS 0528+134 in Quiescence

N. I. Palma, M. Boettcher

We present multiwavelength observations of the ultraluminous blazar-type radio loud quasar PKS 0528+134 in quiescence during the period July to December 2009. Significant flux vari…

astro-ph.HE2011★ 79 cited

AGILE detection of extreme gamma-ray activity from the blazar PKS 1510-089 during March 2009. Multifrequency analysis

F. D'Ammando, C. M. Raiteri, M. Villata +112

We report on the extreme gamma-ray activity from the FSRQ PKS 1510-089 observed by AGILE in March 2009. In the same period a radio-to-optical monitoring of the source was provided…

astro-ph.HE2010★ 87 cited

Multi-wavelength Observations of the Flaring Gamma-ray Blazar 3C 66A in 2008 October

LAT collaboration, A. A. Abdo et al., the VERITAS collaboration +4

The BL Lacertae object 3C 66A was detected in a flaring state by the Fermi Large Area Telescope (LAT) and VERITAS in 2008 October. In addition to these gamma-ray observations, F-GA…

astro-ph.HE2010★ 101 cited

Multiwavelength observations of 3C 454.3. III. Eighteen months of AGILE monitoring of the "Crazy Diamond"

S. Vercellone, F. D'Ammando, V. Vittorini +110

We report on 18 months of multiwavelength observations of the blazar 3C 454.3 (Crazy Diamond) carried out in July 2007-January 2009. We show the results of the AGILE campaigns whic…

astro-ph.HE2009★ 50 cited

AGILE detection of a rapid gamma-ray flare from the blazar PKS 1510-089 during the GASP-WEBT monitoring

F. D'Ammando, G. Pucella, C. M. Raiteri +103

We report the detection by the AGILE satellite of a rapid gamma-ray flare from the powerful gamma-ray quasar PKS 1510-089, during a pointing centered on the Galactic Center region…

astro-ph.HE2009★ 2 cited

WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007-2008. Unveiling different emission components

C. M. Raiteri, M. Villata, A. Capetti +8

In 2007-2008 we carried out a new multiwavelength campaign of the Whole Earth Blazar Telescope (WEBT) on BL Lacertae, involving three pointings by the XMM-Newton satellite, to stud…

astro-ph.HE2009

Multiwavelength Observations of Mrk 501 in 2008

D. Kranich, D. Paneque, A. Cesarini +16

The well-studied VHE (E >100 GeV) blazar Mrk 501 was observed between March and May 2008 as part of an extensive multiwavelength observation campaign including radio, optical, X-ra…