3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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14 papers · 2 filters
Quiescent state and outburst evolution of SGR 0501+4516
A. Camero, A. Papitto, N. Rea +9
We report on the quiescent state of the Soft Gamma Repeater SGR 0501+4516 observed by XMM-Newton on 2009 August 30. The source exhibits an absorbed flux ~75 times lower than that m…
TeV gamma-ray survey of the Northern sky using the ARGO-YBJ detector
YBJ Collaboration, B. Bartoli, P. Bernardini +94
The ARGO-YBJ detector is an extensive air shower array that has been used to monitor the northern -ray sky at energies above 0.3 TeV from 2007 November to 2013 January. In this…
An updated list of AGILE bright gamma-ray sources and their variability in pointing mode
F. Verrecchia, C. Pittori, A. W. Chen +76
We present a variability study of a sample of bright gamma-ray (30 MeV -- 50 GeV) sources. This sample is an extension of the first AGILE catalogue of gamma-ray sources (1AGL), obt…
A variable absorption feature in the X-ray spectrum of a magnetar
Andrea Tiengo, Paolo Esposito, Sandro Mereghetti +9
Soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are slowly rotating, isolated neutron stars that sporadically undergo episodes of long-term flux enhancement (out…
Optical Observations of PSR J0205+6449 - the next optical pulsar?
P. Moran, R. P. Mignani, S. Collins +3
PSR J0205+6449 is a young ({\approx} 5400 years), Crab-like pulsar detected in radio and at X and γ-ray energies and has the third largest spin-down flux among known rotation power…
The variable X-ray emission of PSR B0943+10
Sandro Mereghetti, Andrea Tiengo, Paolo Esposito +1
The old pulsar PSR B0943+10 (P=1.1 s, characteristic age tau=5 Myr) is the best example of mode-switching radio pulsar. Its radio emission alternates between a highly organized sta…
The XMM-Newton survey of the Small Magellanic Cloud: The X-ray point-source catalogue
R. Sturm, F. Haberl, W. Pietsch +8
Local-Group galaxies provide access to samples of X-ray source populations of whole galaxies. The XMM-Newton survey of the Small Magellanic Cloud (SMC) completely covers the bar an…
Optical Polarimetry of the Inner Crab Nebula and Pulsar
Paul Moran, Andy Shearer, Roberto Mignani +4
Time-resolved polarisation measurements of pulsars offer an unique insight into the geometry of their emission regions. Such measure\ ments provide observational constraints on the…
AGILE Mini-Calorimeter gamma-ray burst catalog
M. Galli, M. Marisaldi, F. Fuschino +23
The Mini-Calorimeter of the AGILE satellite can observe the high-energy part of gamma-ray bursts with good timing capability. We present the data of the 85 hard gamma-ray bursts ob…
X-ray emission from the luminous O-type subdwarf HD 49798 and its compact companion
S. Mereghetti, N. La Palombara, A. Tiengo +4
The X-ray source RX J0648.0-4418 is the only confirmed binary system in which a compact object, most likely a massive white dwarf, accretes from a hot subdwarf companion, the brigh…
Observation of TeV gamma-rays from the unidentified source HESS J1841-055 with the ARGO-YBJ experiment
YBJ Collaboration, B. Bartoli, P. Bernardini +100
We report the observation of a very high energy γ-ray source, whose position is coincident with HESS J1841-055. This source has been observed for 4.5 years by the ARGO-YBJ experime…
Gamma-ray observations of Cygnus X-1 above 100 MeV in the hard and soft states
S. Sabatini, M. Tavani, P. Coppi +19
We present the results of multi-year gamma-ray observations by the AGILE satellite of the black hole binary system Cygnus X-1. In a previous investigation we focused on gamma-ray o…
Transparency of the Universe to gamma rays
Alessandro De Angelis, Giorgio Galanti, Marco Roncadelli
Using the most recent observational data concerning the Extragalactic Background Light and the Radio Background, for a source at a redshift z_s < 3 we compute the energy E_0 of an…
Deep optical observations of the gamma-ray pulsar PSR J0007+7303 in the CTA 1 supernova remnant
R. P. Mignani, A. de Luca, N. Rea +5
The Fermi Large Area Telescope (LAT) discovered the time signature of a radio-silent pulsar coincident with RX J0007.0+7302, a plerion-like X-ray source at the centre of the CTA 1…