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Multiwavelength variability study and search for periodicity of PKS 1510-089
G. Castignani, E. Pian, T. M. Belloni +14
Blazars are the most luminous and variable AGNs, and thus excellent probes of accretion and emission processes close to the central engine. We focus on PKS 1510-089 (), one…
The e-ASTROGAM mission (exploring the extreme Universe with gamma rays in the MeV-GeV range)
Alessandro De Angelis, Vincent Tatischeff, Marco Tavani +71
e-ASTROGAM (`enhanced ASTROGAM') is a breakthrough Observatory mission dedicated to the study of the non-thermal Universe in the photon energy range from 0.3 MeV to 3 GeV. The miss…
On radiative acceleration in spine-sheath structured blazar jets
Atul Chhotray, Francesco Nappo, Gabriele Ghisellini +3
It has been proposed that blazar jets are structured, with a fast spine surrounded by a slower sheath or layer. This structured jet model explains some properties of their emission…
Revisiting the EC/CMB model for extragalactic large scale jets
Matteo Lucchini, Fabrizio Tavecchio, Gabriele Ghisellini
One of the most outstanding results of the Chandra X-ray Observatory was the discovery that AGN jets are bright X-ray emitters on very large scales, up to hundreds of kpc. Of these…
The blazar sequence 2.0
Gabriele Ghisellini
I discuss the spectral energy distribution (SED) of all blazars with redshift detected by the {\it Fermi} satellite and listed in the 3LAC catalog. I will update the so called "bla…
Synchrotron masers and fast radio bursts
Gabriele Ghisellini
Fast Radio Bursts (FRBs), with a typical duration of 1 ms and 1 Jy flux density at GHz frequencies, have brightness temperatures exceeding 1e33 K, requiring a coherent emission pro…