Ambrosone, Antonio (2023) Probing Star-forming Environments with Gamma-ray and Neutrino Astronomy. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | Probing Star-forming Environments with Gamma-ray and Neutrino Astronomy |
| Autori: | Autore Email Ambrosone, Antonio antonio.ambrosone1997@gmail.com |
| Data: | 2 Dicembre 2023 |
| Numero di pagine: | 197 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dipartimento: | Fisica |
| Dottorato: | Fisica |
| Ciclo di dottorato: | 36 |
| Coordinatore del Corso di dottorato: | nome email Canale, Vincenzo canale@na.infn.it |
| Tutor: | nome email Miele, Gennaro [non definito] Marinelli, Antonio [non definito] |
| Data: | 2 Dicembre 2023 |
| Numero di pagine: | 197 |
| Parole chiave: | Starburst Galaxies, Neutrinos, Multi-Messenger Astronomy |
| Settori scientifico-disciplinari del MIUR: | Area 02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici |
| Depositato il: | 20 Dic 2023 07:16 |
| Ultima modifica: | 09 Mar 2026 10:42 |
| URI: | http://www.fedoa.unina.it/id/eprint/15704 |
Abstract
In this thesis, we investigate extragalactic star-forming environments such as Starburst Galaxies (SBGs) and Star-forming Galaxies (SFGs) as potential gamma-ray and neutrino factories, both as diffuse and as point-like emitters. In particular, using the state-of-the-art modelling of the CR transport inside Starburst Nuclei (SBNi), we develop a data-driven blending of spectral index to quantitatively assess the diffuse gamma-ray and neutrino fluxes of these sources. We find that this new scenario can account for a sizeable part of IceCube diffuse measurements, while consistent with the current gamma-ray limits from non-blazar sources. We also estimate the neutrino budget of local (known) SBGs, pointing out KM3NeT/ARCA as a crucial probe for the star-forming activity of these sources. Indeed, we also report dedicated analysis on behalf of the KM3NeT collaboration, evaluating for the first time, the expected quasi-differential sensitivity and discovery potential, analysing also local SBGs. We have also performed a forecast analysis for the Cherenkov Telescope Array (CTA), simulating mock data sets for SBNi demonstrating that the future telescope is going to indirectly probe CR transport mechanisms inside these sources, having also important implications for neutrino astronomy. We have also exploited such a forecast in order to conduct a beyond standard model study to constrain exotic interactions between light Dark Matter (DM) particle and protons. Finally, we also analyse, in the light of the latest IceCube results, galactic star-forming environments as quasi-diffuse neutrino emissions. We utilize the concept of discovery horizon for a high-energy neutrino telescope in order to show that the current IceCube discovery potential cannot disentangle a true diffuse neutrino emission from a quasi-diffuse neutrino emission from galactic pevatrons. Nonetheless, we show that the upcoming KM3NeT/ARCA will have the capability of probing Young Massive Stellar Clusters (YMSCs) and Hypernovae.
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