241 citations · 2.9k across the 70 of their papers we have counts for
70 papers
IQUEYE at Gemini South: instrument, science commission, and first results
Tomas Cassanelli, Pascual Marcone-Puga, Giampiero Naletto +7
The Italian quantum eye (IQUEYE) is a fast photon counter based on the single photon avalanche diode detectors and capable of preserving a ~0.5 ns/h accuracy photon time of arrival…
Evolution of the transitional millisecond pulsar PSR J1023+0038 from Aqueye+ and NICER observations
Silvia Conforti, Luca Zampieri, Michele Fiori +3
Transitional millisecond pulsars (tMSPs) are old neutron stars spun up by accretion from a low-mass companion. These objects can switch between two emission regimes: rotation-power…
Coronal Heating Rate in the Slow Solar Wind
Daniele Telloni, Marco Romoli, Marco Velli +59
This Letter reports the first observational estimate of the heating rate in the slowly expanding solar corona. The analysis exploits the simultaneous remote and local observations…
Does Turbulence along the Coronal Current Sheet Drive Ion Cyclotron Waves?
Daniele Telloni, Gary P. Zank, Laxman Adhikari +32
Evidence for the presence of ion cyclotron waves, driven by turbulence, at the boundaries of the current sheet is reported in this paper. By exploiting the full potential of the jo…
Connecting Solar Orbiter remote-sensing observations and Parker Solar Probe in-situ measurements with a numerical MHD reconstruction of the Parker spiral
Ruggero Biondo, Alessandro Bemporad, Paolo Pagano +21
As a key feature, NASA's Parker Solar Probe (PSP) and ESA-NASA's Solar Orbiter (SO) missions cooperate to trace solar wind and transients from their sources on the Sun to the inner…
Investigating the origin of optical and X-ray pulsations of the transitional millisecond pulsar PSR J1023+0038
G. Illiano, A. Papitto, F. Ambrosino +21
PSR J1023+0038 is the first millisecond pulsar that was ever observed as an optical and UV pulsar. So far, it is the only optical transitional millisecond pulsar. The rotation- and…
First measurements and upgrade plans of the MAGIC intensity interferometer
Juan Cortina, V. A. Acciari, A. Biland +22
The two MAGIC 17-m diameter Imaging Atmospheric Cherenkov Telescopes have been equipped to work also as an intensity interferometer with a deadtime-free, 4-channel, GPU-based, real…
Investigating the accuracy achievable in reconstructing the angular sizes of stars through stellar intensity interferometry observations
Michele Fiori, Giampiero Naletto, Luca Zampieri +2
Context: In recent years, stellar intensity interferometry has seen renewed interest from the astronomical community because it can be efficiently applied to Cherenkov telescope ar…
The ASTRI Mini-Array of Cherenkov Telescopes at the Observatorio del Teide
Scuderi S., Giuliani A., Pareschi G. +95
The ASTRI Mini-Array (MA) is an INAF project to build and operate a facility to study astronomical sources emitting at very high-energy in the TeV spectral band. The ASTRI MA consi…
ASTRI Mini-Array Core Science at the Observatorio del Teide
S. Vercellone, C. Bigongiari, A. Burtovoi +84
The ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Project led by the Italian National Institute for Astrophysics (INAF) is developing and will deploy at the Obse…
Observation of Magnetic Switchback in the Solar Corona
Daniele Telloni, Gary P. Zank, Marco Stangalini +49
Switchbacks are sudden, large radial deflections of the solar wind magnetic field, widely revealed in interplanetary space by the Parker Solar Probe. The switchbacks' formation mec…
New technique for determining a pulsar period: Waterfall principal component analysis
Tomas Cassanelli, Giampiero Naletto, Giacomo Codogno +3
This paper describes a new technique for determining the optimal period of a pulsar and consequently its light curve. The implemented technique makes use of the Principal Component…
Deep upper limit on the optical emission during a hard X-ray burst from the magnetar SGR J1935+2154
Luca Zampieri, Sandro Mereghetti, Roberto Turolla +9
In September 2021 the magnetar SGR J1935+2154 entered a stage of burst/flaring activity in the hard X-ray band. On September 10, 2021 we observed SGR J1935+2154 with the fiber-fed…
Measuring the F-corona intensity through time correlation of total and polarized visible light images
A. Burtovoi, G. Naletto, S. Dolei +4
We present a new correlation method for deriving the F-corona intensity distribution, which is based on the analysis of the evolution of the total and polarized visible light (VL)…
Exploring the Solar Wind from its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter - Parker Solar Probe Quadrature
Daniele Telloni, Vincenzo Andretta, Ester Antonucci +68
This Letter addresses the first Solar Orbiter (SO) -- Parker Solar Probe (PSP) quadrature, occurring on January 18, 2021, to investigate the evolution of solar wind from the extend…
Stellar intensity interferometry of Vega in photon counting mode
Luca Zampieri, Giampiero Naletto, Aleksandr Burtovoi +2
Stellar Intensity Interferometry is a technique based on the measurement of the second order spatial correlation of the light emitted from a star. The physical information provided…
First light observations of the solar wind in the outer corona with the Metis coronagraph
M. Romoli, E. Antonucci, V. Andretta +65
The investigation of the wind in the solar corona initiated with the observations of the resonantly scattered UV emission of the coronal plasma obtained with UVCS-SOHO, designed to…
Observational constraints to the dynamics of dust particles in the coma of comet 67P/Churyumov-Gerasimenko
Elisa Frattin, I. Bertini, S. L. Ivanovski +18
In this work we aim to characterise the dust motion in the inner coma of comet 67P/Churyumov- Gerasimenko to provide constraints for theoretical 3D coma models. The OSIRIS camera o…
A journey of exploration to the polar regions of a star: probing the solar poles and the heliosphere from high helio-latitude
Louise Harra, Vincenzo Andretta, Thierry Appourchaux +29
A mission to view the solar poles from high helio-latitudes (above 60) will build on the experience of Solar Orbiter as well as a long heritage of successful solar missions…
Cosmic-ray flux predictions and observations for and with Metis on board Solar Orbiter
C. Grimani, V. Andretta, P. Chioetto +41
The Metis coronagraph is one of the remote sensing instruments hosted on board the ESA/NASA Solar Orbiter mission. Metis is devoted to carry out the first simultaneous imaging of t…
Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs
F. L. Rommel, F. Braga-Ribas, J. Desmars +66
Trans-Neptunian objects (TNOs) and Centaurs are remnants of our planetary system formation, and their physical properties have invaluable information for evolutionary theories. Ste…
Spin-down rate of the transitional millisecond pulsar PSR J1023+0038 in the optical band with Aqueye+
Aleksandr Burtovoi, Luca Zampieri, Michele Fiori +5
We present a timing analysis of the transitional millisecond pulsar PSR J1023+0038 using observations taken between January 2018 and January 2020 with the high time resolution phot…
The lowest frequency Fast Radio Bursts: Sardinia Radio Telescope detection of the periodic FRB 180916 at 328 MHz
M. Pilia, M. Burgay, A. Possenti +35
We report on the lowest-frequency detection to date of three bursts from the fast radio burst FRB 180916, observed at 328 MHz with the Sardinia Radio Telescope (SRT). The SRT obser…
Metis: the Solar Orbiter visible light and ultraviolet coronal imager
Ester Antonucci, Marco Romoli, Vincenzo Andretta +100
Metis is the first solar coronagraph designed for a space mission capable of performing simultaneous imaging of the off-limb solar corona in both visible and UV light. The observat…