A5020823490- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- Planetary Science and Exploration
- Adaptive optics and wavefront sensing
- Galaxies: Formation, Evolution, Phenomena
- Glaucoma and retinal disorders
- History and Developments in Astronomy
- Retinal Imaging and Analysis
- Astronomical Observations and Instrumentation
- Isotope Analysis in Ecology
- Optical Coherence Tomography Applications
- Space Satellite Systems and Control
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
University of Bologna
2025
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2021-2025
University of Salerno
2021-2024
In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter hidden Universe what it made of? that, even after 40 years from Vera Rubin seminal discovery [ 1 ] does not have proper answer. Actually, more investigated, this issue has become strongly entangled with aspects go beyond established Quantum Physics, Standard Model of Elementary particles General Relativity related to processes like Inflation, accelerated expansion...
Modeling of microlensing events poses computational challenges for the resolution lens equation and high dimensionality parameter space. In particular, numerical noise represents a severe limitation to fast efficient calculations by multiple systems, which are particular interest in exoplanetary searches. We present new public code built on our previous experience binary lenses that introduces three algorithms computation magnification astrometry microlensing. addition classical polynomial...
Abstract Contact binaries are found throughout the solar system. The recent discovery of Selam, satellite MBA (152830) Dinkinesh, by NASA LUCY mission has made it clear that term ‘contact binary’ covers a variety different types bi-modal mass distributions and formation mechanisms. Only modelling more contact can this population be properly understood. We determined spin state shape model for Apollo group binary asteroid (388188) 2006 DP14using ground-based optical radar observations...
Abstract The NASA’s Double-Asteroid Redirection Test (DART) was a unique planetary defence and technology test mission, the first of its kind. main spacecraft DART mission impacted target asteroid Dimorphos, small moon orbiting Didymos (65803), on 2022 September 26. impact brought up mass ejecta which, together with direct momentum transfer from collision, caused an orbital period change 33 ± 1 minutes, as measured by ground-based observations. We report here outcome optical monitoring...
Aims. We investigated the nature of anomalies appearing in four microlensing events KMT-2020-BLG-0757, KMT-2022-BLG-0732, KMT-2022-BLG-1787, and KMT-2022-BLG-1852. The light curves these commonly exhibit initial bumps followed by subsequent troughs that extend across a substantial portion curves. Methods. performed thorough modeling to elucidate their characteristics. Despite prolonged durations, which differ from usual brief observed typical planetary events, our analysis revealed each...
Abstract We report discovering an exoplanet from following up a microlensing event alerted by Gaia. The Gaia22dkv is toward disk source rather than the traditional bulge fields. Our primary analysis yields Jovian planet with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>M</mml:mi> </mml:mrow> <mml:mi mathvariant="normal">p</mml:mi> </mml:msub> <mml:mo>=</mml:mo> <mml:msubsup> <mml:mn>0.59</mml:mn> <mml:mo>−</mml:mo>...
MOA-2006-BLG-074 was selected as one of the most promising planetary candidates in a retrospective analysis MOA collaboration: its asymmetric high-magnification peak can be perfectly explained by source passing across central caustic deformed small planet. However, after detailed residuals, we have realized that single lens and orbiting with faint companion provides more satisfactory explanation for all observed deviations from Paczynski curve only physically acceptable interpretation....
Context. Brown dwarfs are poorly understood transition objects between stars and planets, with several competing mechanisms having been proposed for their formation. Mass measurements generally difficult isolated but also brown orbiting low-mass stars, which often too faint spectroscopic follow-up. Aims. Microlensing provides an alternative tool the discovery investigation of such systems. Here we present analysis microlensing event OGLE-2019-BLG-0033/MOA-2019-BLG-035, is due to a binary...
Context. Gravitational microlensing is a method that used to discover planet-hosting systems at distances of several kiloparsec in the Galactic disk and bulge. We present analysis event reported by Gaia photometric alert team might have bright lens. Aims. In order infer mass distance lensing system, parallax measurement position Gaia21blx was used. this particular case, source lens comparable magnitudes we cannot attribute measured or alone. Methods. Since blending flux important, assumed...
Context . Gravitational microlensing is a method that used to discover planet-hosting systems at distances of several kiloparsec in the Galactic disk and bulge. We present analysis event reported by Gaia photometric alert team might have bright lens. Aims In order infer mass distance lensing system, parallax measurement position Gaia21blx was used. this particular case, source lens comparable magnitudes we cannot attribute measured or alone. Methods Since blending flux important, assumed...
During the last 25 years, hundreds of binary stars and planets have been discovered towards Galactic Bulge by microlensing surveys. Thanks to a new generation large-sky surveys, it is now possible regularly detect events across entire sky. The OMEGA Key Projet at Las Cumbres Observatory carries out automated follow-up observations alerted these surveys with aim identifying characterizing exoplanets as well stellar remnants. In this study, we present analysis lens event Gaia20bof. By...
Abstract During the last 25 yr, hundreds of binary stars and planets have been discovered toward Galactic bulge by microlensing surveys. Thanks to a new generation large-sky surveys, it is now possible regularly detect events across entire sky. The OMEGA Key Projet at Las Cumbres Observatory carries out automated follow-up observations alerted these surveys with aim identifying characterizing exoplanets as well stellar remnants. In this study, we present analysis lens event Gaia20bof. By...
We investigated the nature of anomalies appearing in four microlensing events KMT-2020-BLG-0757, KMT-2022-BLG-0732, KMT-2022-BLG-1787, and KMT-2022-BLG-1852. The light curves these commonly exhibit initial bumps followed by subsequent troughs that extend across a substantial portion curves. performed thorough modeling to elucidate their characteristics. Despite prolonged durations, which differ from usual brief observed typical planetary events, our analysis revealed each anomaly originated...
The NASA's Double-Asteroid Redirection Test (DART) was a unique planetary defence and technology test mission, the first of its kind. main spacecraft DART mission impacted target asteroid Dimorphos, small moon orbiting (65803) Didymos, on 2022 September 26. impact brought up mass ejecta which, together with direct momentum transfer from collision, caused an orbital period change 33 +/- 1 minutes, as measured by ground-based observations. We report here outcome optical monitoring campaign...