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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7 papers · 2 filters
A puzzling 2-hour X-ray periodicity in the 1.5-hour orbital period black widow PSR J1311-3430
Andrea De Luca, Martino Marelli, Sandro Mereghetti +3
Time-domain analysis of an archival XMM-Newton observation unveiled a very unusual variability pattern in the soft X-ray emission of PSR J1311-3430, a black widow millisecond pulsa…
Observability of the very-high-energy emission from GRB 221009A
Giorgio Galanti, Lara Nava, Marco Roncadelli +2
The LHAASO Collaboration detected the gamma ray burst GRB 221009A at energies above with a tail extending up to , whose spectral analysis has pres…
Two decades of X-ray observations of the isolated neutron star RX J1856.5-3754: detection of thermal and non-thermal hard X-rays and refined spin-down measurement
Davide De Grandis, Michela Rigoselli, Sandro Mereghetti +6
The soft X-ray pulsar RX J1856.5-3754 is the brightest member of a small class of thermally-emitting, radio-silent, isolated neutron stars. Its X-ray spectrum is almost indistingui…
AGILE Observations of GRB 220101A: A "New Year's Burst" with an Exceptionally Huge Energy Release
Alessandro Ursi, Marco Romani, Giovanni Piano +20
We report the AGILE observations of GRB 220101A, which took place at the beginning of 1st January 2022 and was recognized as one of the most energetic gamma-ray bursts (GRBs) ever…
The first 7 months of the 2020 X-ray outburst of the magnetar SGR J1935+2154
Alice Borghese, Francesco Coti Zelati, Gian Luca Israel +10
The magnetar SGR J1935+2154 underwent a new active episode on 2020 April 27-28, when a forest of hundreds of X-ray bursts and a large enhancement of the persistent flux were detect…
X-ray observation of the Roche-lobe filling white dwarf plus hot subdwarf system ZTF J213056.71+442046.5
S. Mereghetti, N. La Palombara, T. Kupfer +9
ZTF J213056.71+442046.5 is the prototype of a small class of recently discovered compact binaries composed of a white dwarf and a hot subdwarf that fills its Roche-lobe. Its orbita…
Recurrent X-ray flares of the black hole candidate in the globular cluster RZ 2109 in NGC 4472
A. Tiengo, P. Esposito, M. Toscani +7
We report on the systematic analysis of the X-ray observations of the ultra-luminous X-ray source XMMU J122939.7+075333 located in the globular cluster RZ 2109 in the Virgo galaxy…