G. Verna
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View article: A high geometric albedo and small size for the Haumea cluster member (24835) 1995 SM <sub>55</sub> determined from a stellar occultation and photometric observations
A high geometric albedo and small size for the Haumea cluster member (24835) 1995 SM <sub>55</sub> determined from a stellar occultation and photometric observations Open
Context . Trans-Neptunian objects (TNOs) are thought to be some of the most ancient and primitive bodies in our Solar System. Understanding their basic physical properties is crucial to unraveling their origin and the evolution of the oute…
View article: Recent observations of PKS 2155-304 with MAGIC and LST-1 in a multi-wavelength context
Recent observations of PKS 2155-304 with MAGIC and LST-1 in a multi-wavelength context Open
PKS 2155-304 is a well-known high-frequency peaked BL Lac (HBL) at redshift z=0.116, which has been extensively studied across the electromagnetic spectrum due to its rapid and large-amplitude variability. Several violent outbursts in X-ra…
View article: Line emission search from Dark Matter annihilation in the Galactic Center with LST-1
Line emission search from Dark Matter annihilation in the Galactic Center with LST-1 Open
Dark Matter remains a great mystery in modern physics. Among various candidates, the weakly interacting massive particles (WIMPs) scenario stands out and is under extensive study. The detection of the hypothetical gamma-ray emission from W…
View article: Confirmation of four hot Jupiters detected by TESS using follow-up spectroscopy from MaHPS at Wendelstein together with NEID and TRES
Confirmation of four hot Jupiters detected by TESS using follow-up spectroscopy from MaHPS at Wendelstein together with NEID and TRES Open
We report the confirmation and characterization of four hot Jupiter-type exoplanets initially detected by TESS: TOI-1295 b, TOI-2580 b, TOI-6016 b, and TOI-6130 b. Using observations with the high-resolution echelle spectrograph MaHPS on t…
View article: A wiggling filamentary jet at the origin of the blazar multi-wavelength behaviour
A wiggling filamentary jet at the origin of the blazar multi-wavelength behaviour Open
Context. Blazars are beamed active galactic nuclei (AGNs) known for their strong multi-wavelength variability on timescales ranging from years down to minutes. Many different models have been proposed to explain this variability. Aims. We …
View article: A wiggling filamentary jet at the origin of the blazar multi-wavelength behaviour
A wiggling filamentary jet at the origin of the blazar multi-wavelength behaviour Open
Blazars are beamed active galactic nuclei known for their strong multi-wavelength variability on timescales from years down to minutes. We aim to investigate the suitability of the twisting jet model presented in previous works to explain …
View article: “Astronomy for sailors”: a web game to learn physics using the stars and a clock
“Astronomy for sailors”: a web game to learn physics using the stars and a clock Open
If you were on a boat in the middle of the sea how could you guess your position using just the stars and a clock? This is the challenge for hundreds of students at our interactive astronomy workshop in the context of the Genoa Science Fes…
View article: HAWC J2227+610: a potential PeVatron candidate for the CTA in the northern hemisphere
HAWC J2227+610: a potential PeVatron candidate for the CTA in the northern hemisphere Open
Recent observations of the gamma-ray source HAWC J2227+610 by Tibet AS+MD and LHAASO confirm the special interest of this source as a galactic PeVatron candidate in the northern hemisphere. HAWC J2227+610 emits Very High Energy (VHE) gamma…
View article: HAWC J2227+610: a potential PeVatron candidate for the CTA in the northern hemisphere
HAWC J2227+610: a potential PeVatron candidate for the CTA in the northern hemisphere Open
Recent observations of the gamma-ray source HAWC J2227+610 by Tibet AS+MD and LHAASO\nconfirm the special interest of this source as a galactic PeVatron candidate in the northern hemisphere. HAWC J2227+610 emits Very High Energy (VHE) gamm…
View article: Reconstruction of truncated images for PeVatron searches \nwith the Cherenkov Telescope Array
Reconstruction of truncated images for PeVatron searches
\nwith the Cherenkov Telescope Array Open
The Cherenkov Telescope Array (CTA) will be the future groundbased gamma-ray observatory using the imaging atmospheric Cherenkov technique. One of CTA’s key science projects is the search for galactic PeVatrons, extreme
\nsources of accele…
View article: Cherenkov Telescope Array potential in the search for Galactic PeVatrons
Cherenkov Telescope Array potential in the search for Galactic PeVatrons Open
One of the major scientific objectives of the future Cherenkov Telescope Array (CTA) Observatory is the search for PeVatrons. PeVatrons are cosmic-ray factories able to accelerate nuclei at least up to the knee feature seen in the spectrum…
View article: Reply to Comment on ‘‘Rutherford’s experiment’ on alpha particles scattering: the experiment that never was’
Reply to Comment on ‘‘Rutherford’s experiment’ on alpha particles scattering: the experiment that never was’ Open
A brief reply to Prof. Campbell's comment follows below.
View article: Cherenkov Telescope Array potential in the search for Galactic PeVatrons
Cherenkov Telescope Array potential in the search for Galactic PeVatrons Open
One of the major scientific objectives of the future Cherenkov Telescope Array (CTA) Observatory is the search for PeVatrons. PeVatrons are cosmic-ray factories able to accelerate nuclei at least up to the knee feature seen in the spectrum…
View article: ‘Rutherford’s experiment’ on alpha particles scattering: the experiment that never was
‘Rutherford’s experiment’ on alpha particles scattering: the experiment that never was Open
The so-called Rutherford's experiment, as it is outlined in many physics textbooks, is a case in point of the flaws around the history at the educational level of one of the decisive event of modern physics: the discovery that the atom has…