A. Pellizzoni
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View article: Broadband radio study of the supernova remnant Kes 73
Broadband radio study of the supernova remnant Kes 73 Open
Context . Strong shocks occurring in supernova remnants (SNRs), and their interaction with an often anisotropic surrounding medium, make SNRs ideal laboratories for studying the production and acceleration of cosmic rays (CRs). Due to thei…
View article: Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations
Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations Open
Observations at (sub-)millimeter wavelengths offer a complementary perspective on our Sun and other stars, offering significant insights into both the thermal and magnetic composition of their chromospheres. Despite the fundamental progres…
View article: The First High Frequency Technosignature Search Survey with the Sardinia Radio Telescope
The First High Frequency Technosignature Search Survey with the Sardinia Radio Telescope Open
The quest for radio signals from technologically-advanced extraterrestrial intelligence has traditionally concentrated on the vicinity of 1.4 GHz. In this paper, we extend the search to unprecedented territories, detailing our extensive ob…
View article: Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations
Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations Open
Observations at (sub-)millimeter wavelengths offer a complementary perspective on our Sun and other stars, offering significant insights into both the thermal and magnetic composition of their chromospheres. Despite the fundamental progres…
View article: AtLAST Science Overview Report
AtLAST Science Overview Report Open
Submillimeter and millimeter wavelengths provide a unique view of the Universe, from the gas and dust that fills and surrounds galaxies to the chromosphere of our own Sun. Current single-dish facilities have presented a tantalising view of…
View article: Tracking the X-Ray Polarization of the Black Hole Transient Swift J1727.8–1613 during a State Transition
Tracking the X-Ray Polarization of the Black Hole Transient Swift J1727.8–1613 during a State Transition Open
We report on an observational campaign on the bright black hole (BH) X-ray binary Swift J1727.8–1613 centered around five observations by the Imaging X-ray Polarimetry Explorer. These observations track for the first time the evolution of …
View article: Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes
Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes Open
An error occurred during the production process. Some units have been mistakenly changed in the text: each “mm” (millimeter) unit should read “Mm” (megameter).
View article: Atacama Large Aperture Submillimeter Telescope (AtLAST) Science: Solar and stellar observations
Atacama Large Aperture Submillimeter Telescope (AtLAST) Science: Solar and stellar observations Open
Observations at (sub-)millimeter wavelengths offer a complementary perspective on our Sun and other stars, offering significant insights into both the thermal and magnetic composition of their chromospheres. Despite the fundamental progres…
View article: Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes
Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes Open
Context. One of the most important objectives of solar physics is to gain a physical understanding of the solar atmosphere, whose structure can also be described in terms of the density ( N ) and temperature ( T ) distributions of the atmo…
View article: Study of solar brightness profiles in the 18-26 GHz frequency range with INAF radio telescopes II. Evidence for coronal emission
Study of solar brightness profiles in the 18-26 GHz frequency range with INAF radio telescopes II. Evidence for coronal emission Open
One of the most important objectives of solar physics is the physical understanding of the solar atmosphere, the structure of which is also described in terms of the density (N) and temperature (T) distributions of the atmospheric matter. …
View article: Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes
Study of solar brightness profiles in the 18–26 GHz frequency range with INAF radio telescopes Open
Context. The Sun is an extraordinary workbench, on which several fundamental astronomical parameters can be measured with high precision. Among these parameters, the solar radius R ⊙ plays an important role in several aspects, for instance…
View article: Study of solar brightness profiles in the 18-26 GHz frequency range with INAF radio telescopes I: solar radius
Study of solar brightness profiles in the 18-26 GHz frequency range with INAF radio telescopes I: solar radius Open
The Sun is an extraordinary workbench, from which several fundamental astronomical parameters can be measured with high precision. Among these parameters, the solar radius $R_{\odot}$ plays an important role in several aspects, such as in …
View article: Tracking the X-ray Polarization of the Black Hole Transient Swift J1727.8-1613 during a State Transition
Tracking the X-ray Polarization of the Black Hole Transient Swift J1727.8-1613 during a State Transition Open
We report on an observational campaign on the bright black hole X-ray binary Swift J1727.8$-$1613 centered around five observations by the Imaging X-ray Polarimetry Explorer (IXPE). These observations track for the first time the evolution…
View article: AGILE Gamma-Ray Detection of the Exceptional GRB 221009A
AGILE Gamma-Ray Detection of the Exceptional GRB 221009A Open
Gamma-ray emission in the MeV–GeV range from explosive cosmic events is of invaluable relevance to understanding physical processes related to the formation of neutron stars and black holes. Here we report on the detection by the AGILE sat…
View article: AGILE gamma-ray detection of the exceptional GRB 221009A
AGILE gamma-ray detection of the exceptional GRB 221009A Open
Gamma-ray emission in the MeV-GeV range from explosive cosmic events is of invaluable relevance to understanding physical processes related to the formation of neutron stars and black holes. Here we report on the detection by the AGILE sat…
View article: The First AGILE Solar Flare Catalog
The First AGILE Solar Flare Catalog Open
We report the Astro-rivelatore Gamma a Immagini LEggero (AGILE) observations of solar flares, detected by the onboard anticoincidence system in the 80–200 keV energy range, from 2007 May 1 to 2022 August 31. In more than 15 yr, AGILE detec…
View article: The First AGILE Solar Flare Catalog
The First AGILE Solar Flare Catalog Open
We report the Astrorivelatore Gamma ad Immagini LEggero (AGILE) observations of solar flares, detected by the on board anticoincidence system in the 80-200 keV energy range, from 2007 May 1st to 2022 August 31st. In more than 15 yr, AGILE …
View article: Polarized radio emission unveils the structure of the pre-supernova circumstellar magnetic field and the radio emission in SN1987A
Polarized radio emission unveils the structure of the pre-supernova circumstellar magnetic field and the radio emission in SN1987A Open
The detected polarized radio emission from the remnant of SN1987A opens the possibility to unveil the structure of the pre-supernova (pre-SN) magnetic field (MF) in the circumstellar medium. Properties derived from direct measurements woul…
View article: Solar Observations with Single-Dish INAF Radio Telescopes: Continuum Imaging in the 18 – 26 GHz Range
Solar Observations with Single-Dish INAF Radio Telescopes: Continuum Imaging in the 18 – 26 GHz Range Open
We present a new solar radio imaging system implemented through the upgrade of the large single-dish telescopes of the Italian National Institute for Astrophysics (INAF), not originally conceived for solar observations. During the developm…
View article: Feasibility Study of a W-Band Multibeam Heterodyne Receiver for the Gregorian Focus of the Sardinia Radio Telescope
Feasibility Study of a W-Band Multibeam Heterodyne Receiver for the Gregorian Focus of the Sardinia Radio Telescope Open
We report on the feasibility study of a W-band multibeam heterodyne receiver for the Sardinia Radio Telescope (SRT), a general purpose fully steerable 64-m diameter antenna located on the Sardinia island, Italy, managed by INAF (“Istituto …
View article: A Python approach for solar data analysis: SUNDARA (SUNDish Active Region Analyser), preliminary development
A Python approach for solar data analysis: SUNDARA (SUNDish Active Region Analyser), preliminary development Open
This technical note describes the Python package SUNDARA (SUNDish Active Region Analyser), a sophisticated code - fully self-consistent - aimed at the data analysis of solar images. This analysis is crucial for the INAF Proposal "SunDish P…
View article: Investigating the mini and giant radio flare episodes of Cygnus X-3
Investigating the mini and giant radio flare episodes of Cygnus X-3 Open
The microquasar Cygnus X-3 underwent a giant radio flare in April 2017, reaching a maximum flux of ∼16.5 Jy at 8.5 GHz. We present results from a long monitoring campaign carried out with Medicina at 8.5, 18.6 and 24.1 GHz, in parallel to …
View article: New high-frequency radio observations of the Cygnus Loop supernova remnant with the Italian radio telescopes
New high-frequency radio observations of the Cygnus Loop supernova remnant with the Italian radio telescopes Open
Supernova remnants (SNRs) represent a powerful laboratory to study the cosmic ray acceleration processes at shocks, and their relation to the properties of the circumstellar medium. With the aim of studying the high-frequency radio emissio…
View article: An X-Ray Burst from a Magnetar Enlightening the Mechanism of Fast Radio Bursts
An X-Ray Burst from a Magnetar Enlightening the Mechanism of Fast Radio Bursts Open
Fast radio bursts (FRBs) are short (millisecond) radio pulses originating from enigmatic sources at extragalactic distances so far lacking a detection in other energy bands. Magnetized neutron stars (magnetars) have been considered as the …
View article: AGILE Observations of Two Repeating Fast Radio Bursts with Low Intrinsic Dispersion Measures
AGILE Observations of Two Repeating Fast Radio Bursts with Low Intrinsic Dispersion Measures Open
We focus on two repeating fast radio bursts (FRBs) recently detected by the CHIME/FRB experiment in 2018–2019 (Source 1: 180916.J0158+65, and Source 2: 181030.J1054+73). These sources have low excess dispersion measures ( and , respectivel…
View article: The nature of the infrared counterpart and of the optical nebula associated with the Central Compact Object in Vela Jr.
The nature of the infrared counterpart and of the optical nebula associated with the Central Compact Object in Vela Jr. Open
The X-ray source CXO\\, J085201.4$-$461753in the few kyr-old Vela Jr.\nsupernova remnant (G266.2-1.2) belongs to the peculiar class of isolated\nneutron stars dubbed "Central Compact Objects" (CCOs). At variance with the\nother CCOs, which…
View article: Calibration of AGILE-GRID with On-ground Data and Monte Carlo Simulations
Calibration of AGILE-GRID with On-ground Data and Monte Carlo Simulations Open
AGILE is a mission of the Italian Space Agency (ASI) Scientific Program dedicated to γ -ray astrophysics, and has operated in a low Earth orbit since 2007 April 23. It is designed to be a very light and compact instrument, capable of simul…