Almost 10 yr of γ-ray observations with the Fermi Large Area Telescope have revealed
extreme γ-ray outbursts from flat spectrum radio quasars (FSRQs), temporarily making these …

We report the results of a multiband observing campaign on the famous blazar 3C 279
conducted during a phase of increased activity from 2013 December to 2014 April, including …

We study the broad emission line blazars detected in the γ-ray band by the Large Area
Telescope onboard the Fermi satellite and with the optical spectrum studied by Shaw et al …

We present first results on polarization swings in optical emission of blazars obtained by
RoboPol, a monitoring programme of an unbiased sample of gamma-ray bright blazars …

We use results of our 3 yr polarimetric monitoring programme to investigate the previously
suggested connection between rotations of the polarization plane in the optical emission of …

Blazar spectral models generally have numerous unconstrained parameters, leading to
ambiguous values for physical properties like Doppler factor δ D or fluid magnetic field B'. To …

Les noyaux actifs de galaxie peuvent être de puissants émetteurs dans tout le domaine γ, du
MeV au TeV, un phénomène dû à la présence de jets relativistes, en liaison avec un trou …

Using blazar light curves from the optical All-Sky Automated Survey for Supernovae (ASAS-
SN) and the γ-ray Fermi-LAT telescope, we performed the most extensive statistical …

Locating the gamma-ray emission sites in blazar jets is a long standing and highly
controversial issue. We jointly investigate several constraints on the distance scale r and …

We investigate the distribution of particle acceleration sites, independently of the actual
acceleration mechanism, during plasmoid-dominated, relativistic collisionless magnetic …