3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of PaviaIT2.8k papers
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- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.5k papers
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- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT2.4k papers
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15 papers · 2 filters
Long Term Study of the Double Pulsar J0737-3039 with XMM-Newton: pulsar timing
M. N. Iacolina, A. Pellizzoni, E. Egron +8
The relativistic double neutron star binary PSR J0737-3039 shows clear evidence of orbital phase-dependent wind-companion interaction, both in radio and X-rays. In this paper we pr…
EXTraS discovery of an 1.2-s X-ray pulsar in M 31
P. Esposito, G. L. Israel, A. Belfiore +13
During a search for coherent signals in the X-ray archival data of XMM-Newton, we discovered a modulation at 1.2 s in 3XMM J004301.4+413017 (3X J0043), a source lying in the direct…
Search of MeV-GeV counterparts of TeV sources with AGILE in pointing mode
A. Rappoldi, F. Lucarelli, C. Pittori +12
Context. Known TeV sources detected by major Cerenkov telescopes are investigated to identify possible MeV-GeV gamma-ray counterparts. Aims. A systematic study of the known sources…
4.5 years multi-wavelength observations of Mrk 421 during the ARGO-YBJ and Fermi common operation time
B. Bartoli, P. Bernardini, X. J. Bi +68
We report on the extensive multi-wavelength observations of the blazar Markarian 421 (Mrk 421) covering radio to gamma-rays, during the 4.5 year period of ARGO-YBJ and Fermi common…
The Outburst Decay of the Low Magnetic Field Magnetar SWIFT J1822.3-1606: Phase-resolved Analysis and Evidence for a Variable Cyclotron Feature
Guillermo A. Rodríguez Castillo, Gian Luca Israel, Andrea Tiengo +12
We study the timing and spectral properties of the low-magnetic field, transient magnetar SWIFT J1822.3-1606 as it approached quiescence. We coherently phase-connect the observatio…
IKT 16: the first X-ray confirmed composite SNR in the SMC
Chandreyee Maitra, Jean Ballet, Miroslav Filipovic +4
Aims: IKT 16 is an X-ray and radio-faint supernova remnant (SNR) in the Small Magellanic Cloud (SMC). A detailed X-ray study of this SNR with XMM-Newton confirmed the presence of a…
On the Angular Resolution of the AGILE gamma-ray imaging detector
S. Sabatini, I. Donnarumma, M. Tavani +16
We present a study of the Angular Resolution of the AGILE gamma-ray imaging detector (GRID) that is operational in space since April 2007. The AGILE instrument is made of an array…
Characterization of the Inner Knot of the Crab: The Site of the Gamma-ray Flares?
A. Rudy, D. Horns, A. DeLuca +18
One of the most intriguing results from the gamma-ray instruments in orbit has been the detection of powerful flares from the Crab Nebula. These flares challenge our understanding…
The X-ray outburst of the Galactic Centre magnetar SGR J1745-2900 during the first 1.5 year
F. Coti Zelati, N. Rea, A. Papitto +17
In 2013 April a new magnetar, SGR 1745-2900, was discovered as it entered an outburst, at only 2.4 arcsec angular distance from the supermassive black hole at the Centre of the Mil…
Hint at an axion-like particle from the redshift dependence of blazar spectra
Giorgio Galanti, Marco Roncadelli, Alessandro De Angelis +1
We consider the largest observed sample including all intermediate-frequency peaked (IBL) and high-frequency peaked (HBL) flaring blazars above 100 GeV up to redshift . We…
Crab Nebula: five-year observation with ARGO-YBJ
YBJ Collaboration
The ARGO-YBJ air shower detector monitored the Crab Nebula gamma ray emission from 2007 November to 2013 February. The integrated signal, consisting of 3.3 10 ev…
Search for GeV Gamma Ray Bursts with the ARGO-YBJ Detector: Summary of Eight Years of Observations
B. Bartoli, P. Bernardini, X. J. Bi +78
The search for Gamma Ray Burst (GRB) emission in the energy range 1-100 GeV in coincidence with the satellite detection has been carried out using the Astrophysical Radiation with…
Giant outburst from the supergiant fast X-ray transient IGR J17544-2619: accretion from a transient disc?
P. Romano, E. Bozzo, V. Mangano +7
Supergiant fast X-ray transients (SFXTs) are high mass X-ray binaries associated with OB supergiant companions and characterised by an X-ray flaring behaviour whose dynamical range…
The Knee of the Cosmic Hydrogen and Helium Spectrum below 1 PeV Measured by ARGO-YBJ and a Cherenkov Telescope of LHAASO
B. Bartoli, P. Bernardini, X. J. Bi +93
The measurement of cosmic ray energy spectra, in particular for individual species, is an essential approach in finding their origin. Locating the "knees" of the spectra is an impo…
Radio-quiet and radio-loud pulsars: similar in Gamma-rays but different in X-rays
M. Marelli, R. P. Mignani, A. De Luca +4
We present new Chandra and XMM-Newton observations of a sample of eight radio-quiet Gamma-ray pulsars detected by the Fermi Large Area Telescope. For all eight pulsars we identify…