14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of PisaIT5.2k papers
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35 papers · 2 filters
Fermi-LAT Observations of the Gamma-ray Burst GRB 130427A
LAT collaboration, GBM collaboration
The observations of the exceptionally bright gamma-ray burst (GRB) 130427A by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope provide constraints on the nature…
The First Pulse of the Extremely Bright GRB 130427A: A Test Lab for Synchrotron Shocks
R. Preece, J. Michael Burgess, A. von Kienlin +156
Gamma-ray burst (GRB) 130427A is one of the most energetic GRBs ever observed. The initial pulse up to 2.5 s is possibly the brightest well-isolated pulse observed to date. A fine…
MAGIC upper limits on the GRB 090102 afterglow
MAGIC Collaboration, J. Aleksić, S. Ansoldi +160
Indications of a GeV component in the emission from GRBs are known since the EGRET observations during the 1990's and they have been confirmed by the data of the Fermi satellite. T…
PAMELA and AMS-02 positron and electron spectra are reproduced by three-dimensional cosmic-ray modeling
Daniele Gaggero, Dario Grasso, Luca Maccione +2
The PAMELA collaboration recently released the absolute spectrum between 1 and 300 GeV in addition to the positron fraction and the spectrum previously measured in the…
MAGIC observations and multifrequency properties of the Flat Spectrum Radio Quasar 3C 279 in 2011
J. Aleksić, S. Ansoldi, L. A. Antonelli +168
We study the multifrequency emission and spectral properties of the quasar 3C 279. We observed 3C 279 in very high energy (VHE, E>100GeV) gamma rays, with the MAGIC telescopes duri…
Contemporaneous observations of the radio galaxy NGC 1275 from radio to very high energy gamma-rays
MAGIC Collaboration, J. Aleksić, S. Ansoldi +157
The radio galaxy NGC 1275, recently identified as a very high energy (VHE, >100 GeV) gamma-ray emitter by MAGIC, is one of the few non-blazar AGN detected in the VHE regime. In ord…
Dark Matter Constraints from Observations of 25 Milky Way Satellite Galaxies with the Fermi Large Area Telescope
LAT Collaboration, M. Ackermann, A. Albert +119
The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of ast…
XIPE: the X-ray Imaging Polarimetry Explorer
Paolo Soffitta, Xavier Barcons, Ronaldo Bellazzini +96
X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics to…
Determination of the Point-Spread Function for the Fermi Large Area Telescope from On-orbit Data and Limits on Pair Halos of Active Galactic Nuclei
LAT Collaboration
The Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope is a pair-conversion telescope designed to detect photons with energies from 20 MeV to > 300 GeV. The pre-laun…
PSR J2021+4026 in the Gamma Cygni region: the first variable gamma-ray pulsar seen by the Fermi LAT
LAT collaboration
Long-term monitoring of PSR J2021+4026 in the heart of the Cygnus region with the Fermi Large Area Telescope (LAT) unveiled a sudden decrease in flux above 100 MeV over a time scal…
Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts
The LIGO Scientific Collaboration, the Virgo Collaboration, J. Aasi +875
Long gamma-ray bursts (GRBs) have been linked to extreme core-collapse supernovae from massive stars. Gravitational waves (GW) offer a probe of the physics behind long GRBs. We inv…
Gravitational waves from known pulsars: results from the initial detector era
J. Aasi, J. Abadie, B. P. Abbott +892
We present the results of searches for gravitational waves from a large selection of pulsars using data from the most recent science runs (S6, VSR2 and VSR4) of the initial generat…
Measurement of the atmospheric energy spectrum from 100 GeV to 200 TeV with the ANTARES telescope
The ANTARES Collaboration, S. Adrián-Martínez, A. Albert +149
Atmospheric neutrinos are produced during cascades initiated by the interaction of primary cosmic rays with air nuclei. In this paper, a measurement of the atmospheric ν_μ+ \barν_μ…
Search for cosmic-ray induced gamma-ray emission in Galaxy Clusters
M. Ackermann, M. Ajello, A. Albert +123
Current theories predict relativistic hadronic particle populations in clusters of galaxies in addition to the already observed relativistic leptons. In these scenarios hadronic in…
A Search for Neutrino Emission from the Fermi Bubbles with the ANTARES Telescope
ANTARES Collaboration, S. Adrián-Martínez, A. Albert +147
Analysis of the Fermi-LAT data has revealed two extended structures above and below the Galactic Centre emitting gamma rays with a hard spectrum, the so-called Fermi bubbles. Hadro…
Associating long-term gamma-ray variability with the superorbital period of LS I 61 303
LAT Collaboration
Gamma-ray binaries are stellar systems for which the spectral energy distribution (discounting the thermal stellar emission) peaks at high energies. Detected from radio to TeV gamm…
New Fermi-LAT event reconstruction reveals more high-energy gamma rays from Gamma-ray bursts
W. B. Atwood, L. Baldini, J. Bregeon +14
Based on the experience gained during the four and a half years of the mission, the Fermi -LAT collaboration has undertaken a comprehensive revision of the event-level analysis goi…
An active state of the BL Lac Object Markarian 421 detected by INTEGRAL in April 2013
E. Pian, M. Tuerler, M. Fiocchi +22
Multiwavelength variability of blazars offers indirect insight into their powerful engines and on the mechanisms through which energy is propagated from the centre down the jet. Th…
Search for muon neutrinos from gamma-ray bursts with the ANTARES neutrino telescope using 2008 to 2011 data
S. Adrián-Martínez, A. Albert, I. Al Samarai +146
A search for muon neutrinos in coincidence with gamma-ray bursts with the ANTARES neutrino detector using data from the end of 2007 to 2011 is performed. Expected neutrino fluxes a…
Galactic electron and positron properties from cosmic ray and radio observations
D. Grasso, G. Di Bernardo, C. Evoli +2
We perform a consistent modeling of cosmic ray electrons, positrons and of the radio emission of the Galaxy. For the time we reproduce all relevant data sets between 1 GeV and 1 Te…
Three dimensional modeling of CR propagation
Daniele Gaggero, Luca Maccione, Giuseppe Di Bernardo +2
We present here a major upgrade of DRAGON, a numerical package that computes the propagation of a wide set of CR species from both astrophysical and exotic origin in the Galaxy in…
Constraints on the Galactic Population of TEV Pulsar Wind Nebulae Using Fermi Large Area Telescope Observations
F. Acero, M. Ackermann, M. Ajello +155
Pulsar wind nebulae (PWNe) have been established as the most populous class of TeV gamma-ray emitters. Since launch, the Fermi Large Area Telescope (LAT)identified five high-energy…
Search for Gamma-ray Spectral Lines with the Fermi Large Area Telescope and Dark Matter Implications
LAT Collaboration
Weakly Interacting Massive Particles (WIMPs) are a theoretical class of particles that are excellent dark matter candidates. WIMP annihilation or decay may produce essentially mono…
Rapid and multi-band variability of the TeV-bright active nucleus of the galaxy IC 310
The MAGIC Collaboration, J. Aleksić, L. A. Antonelli +161
Context. The radio galaxy IC 310 has recently been identified as a gamma-ray emitter based on observations at GeV energies with Fermi-LAT and at very high energies (VHE, E>100GeV)…