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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12 papers · 2 filters
The 11 years of low-activity of the magnetar XTE J1810-197
Fabio Pintore, Sandro Mereghetti, Paolo Esposito +5
In 2003, the magnetar XTE J1810-197 started an outburst that lasted until early 2007. In the following 11 years, the source stayed in a quiescent/low activity phase. XTE J1810-197…
AGILE detection of gamma-ray sources coincident with cosmic neutrino events
F. Lucarelli, M. Tavani, G. Piano +34
The origin of cosmic neutrinos is still largely unknown. Using data obtained by the gamma-ray imager on board of the AGILE satellite, we systematically searched for transient gamma…
AGILE, Fermi, Swift, and GASP-WEBT multi-wavelength observations of the high-redshift blazar 4C 71.07 in outburst
S. Vercellone, P. Romano, G. Piano +56
The flat-spectrum radio quasar 4C 71.07 is a high-redshift (), -loud blazar whose optical emission is dominated by the thermal radiation from accretion disc. 4C 7…
A long-lived neutron star merger remnant in GW170817: constraints and clues from X-ray observations
L. Piro, E. Troja, B. Zhang +12
Multi-messenger observations of GW170817 have not conclusively established whether the merger remnant is a black hole (BH) or a neutron star (NS). We show that a long-lived magneti…
Blazar VHE spectral alterations induced by photon-ALP oscillations
Giorgio Galanti, Fabrizio Tavecchio, Marco Roncadelli +1
Prompted by the increasing interest of axion-like particles (ALPs) for very-high-energy (VHE) astrophysics, we have considered a full scenario for the propagation of a VHE photon/A…
Spectral analysis of SXP59.0 during its 2017 outburst and properties of the soft excess in X-ray binary pulsars
N. La Palombara, P. Esposito, F. Pintore +3
We report the results provided by the XMM-Newton observation of the X-ray binary pulsar SXP59.0 during its most recent outburst in April 2017. The source was detected at $f_{\rm X}…
The two tails of PSR J2055+2539 as seen by Chandra: analysis of the nebular morphology and pulsar proper motion
Martino Marelli, Andrea Tiengo, Andrea De Luca +4
We analyzed two Chandra observations of PSR J2055+2539 (for a total integration time of 130 ks) in order to measure its proper motion and study its two elongated nebular feat…
Galactic Cosmic-Ray Anisotropy in the Northern hemisphere from the ARGO-YBJ Experiment during 2008-2012
B. Bartoli, P. Bernardini, X. J. Bi +69
This paper reports on the observation of the sidereal large-scale anisotropy of cosmic rays using data collected by the ARGO-YBJ experiment over 5 years (20082012). This analysi…
EXTraS discovery of a peculiar flaring X-ray source in the Galactic globular cluster NGC 6540
Sandro Mereghetti, Andrea De Luca, David Salvetti +7
We report the discovery of a flaring X-ray source in the globular cluster NGC 6540, obtained during the EXTraS project devoted to a systematic search for variability in archival da…
Extragalactic photon--axion-like particle oscillations up to 1000 TeV
Giorgio Galanti, Marco Roncadelli
Axion-like particles (ALPs) are attracting increasing interest since, among other things, they are a prediction of many extensions of the standard model of elementary particles phy…
Discovery of 3 s pulsations from the Brightest Hard X-ray Source in M31
Guillermo A. Rodríguez Castillo, Gian Luca Israel, Paolo Esposito +4
We report the discovery with XMM-Newton of 3-s X-ray pulsations from 3XMM J004232.1+411314, a dipping source that dominates the hard X-ray emission of M31. This finding unambiguous…
Probing the nature of AX J0043-737: Not an 87 ms pulsar in the SMC
C. Maitra, J. Ballet, P. Esposito +4
AX J0043-737 is a source in the ASCA catalogue, the nature of which is uncertain. It is most commonly classified as a Crab-like pulsar in the Small Magellanic Cloud (SMC) following…