352 citations · 5.8k across the 155 of their papers we have counts for
15 papers · 1 filter
The observation of Gamma Ray Bursts and Terrestrial Gamma-ray Flashes with AGILE
E. Del Monte, G. Barbiellini, F. Fuschino +50
Since its early phases of operation, the AGILE mission is successfully observing Gamma Ray Bursts (GRBs) in the hard X-ray band with the SuperAGILE imager and in the MeV range with…
AGILE detection of Cygnus X-3 γ-ray active states during the period mid-2009/mid-2010
A. Bulgarelli, M. Tavani, A. W. Chen +70
Cygnus X-3 (Cyg X-3) is a well-known microquasar producing variable emission at all wavelengths. Cyg X-3 is a prominent X-ray binary producing relativistic jets, and studying its h…
Neutral pion emission from accelerated protons in the supernova remnant W44
A. Giuliani, M. Cardillo, M. Tavani +41
We present the AGILE gamma-ray observations in the energy range 50 MeV - 10 GeV of the supernova remnant (SNR) W44, one of the most interesting systems for studying cosmic-ray prod…
Observations of Gamma Ray Bursts with AGILE
F. Longo, G. Barbiellini, E. Del Monte +3
The AGILE satellite, in orbit since 2007, localized up to October 2009 about 1 Gamma Ray Burst (GRB) per month with the hard X-ray imager SuperAGILE (18 - 60 keV) (with a rate redu…
Exact RG computation of the optical conductivity of graphene
Alessandro Giuliani, Vieri Mastropietro
The optical conductivity of a system of electrons on the honeycomb lattice interacting through an electromagnetic field is computed by truncated exact Renormalization Group (RG) me…
The AGILE observations of the hard and bright GRB 100724B
E. Del Monte, G. Barbiellini, I. Donnarumma +49
The observation of Gamma Ray Bursts (GRBs) in the gamma-ray band has been advanced by the AGILE and Fermi satellites after the era of the Compton Gamma-Ray Observatory. AGILE and F…
Lattice quantum electrodynamics for graphene
Alessandro Giuliani, Vieri Mastropietro, Marcello Porta
The effects of gauge interactions in graphene have been analyzed up to now in terms of effective models of Dirac fermions. However, in several cases lattice effects play an importa…
The brightest gamma-ray flaring blazar in the sky: AGILE and multi-wavelength observations of 3C 454.3 during November 2010
S. Vercellone, E. Striani, V. Vittorini +84
Since 2005, the blazar 3C 454.3 has shown remarkable flaring activity at all frequencies, and during the last four years it has exhibited more than one gamma-ray flare per year, be…
The remarkable gamma-ray activity in the gravitationally lensed blazar PKS 1830-211
I. Donnarumma, A. De Rosa, V. Vittorini +34
We report the extraordinary gamma-ray activity (E>100 MeV) of the gravitationally lensed blazar PKS 1830-211 (z=2.507) detected by AGILE between October and November 2010. The sour…
Checkerboards, stripes and corner energies in spin models with competing interactions
Alessandro Giuliani, Joel L. Lebowitz, Elliott H. Lieb
We study the zero temperature phase diagram of Ising spin systems in two dimensions in the presence of competing interactions, long range antiferromagnetic and nearest neighbor fer…
A lattice gauge theory model for graphene
Marcello Porta
In this Ph.D. thesis a model for graphene in presence of quantized electromagnetic interactions is introduced. The zero and low temperature properties of the model are studied usin…
The Crab Nebula super-flare in April 2011: extremely fast particle acceleration and gamma-ray emission
E. Striani, M. Tavani, G. Piano +47
We report on the extremely intense and fast gamma-ray are above 100 MeV detected by AGILE from the Crab Nebula in mid-April 2011. This event is the fourth of a sequence of reported…
Spectral Evolution of the September 2010 gamma-ray flare from the Crab Nebula (V2)
V. Vittorini, M. Tavani, G. Pucella +1
Strong gamma-ray flares from the Crab Nebula have been recently discovered by AGILE and confirmed by Fermi-LAT. We study here the spectral evolution in the gamma-ray energy range a…
The ground state construction of the two-dimensional Hubbard model on the honeycomb lattice
Alessandro Giuliani
In these lectures I consider the half-filled two-dimensional (2D) Hubbard model on the honeycomb lattice and I review the rigorous construction of its ground state properties by ma…
Discovery of Powerful Gamma-Ray Flares from the Crab Nebula
M. Tavani, A. Bulgarelli, V. Vittorini +65
The well known Crab Nebula is at the center of the SN1054 supernova remnant. It consists of a rotationally-powered pulsar interacting with a surrounding nebula through a relativist…