Open this publication in new window or tab >>2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]
The stellar death and its aftermath are compelling systems to study due to their extreme conditions and a rich array of observable messengers, such as photons, gravitational waves, and neutrinos. Neutrinos, as messengers of these systems, are particularly interesting due to their ability to traverse space unimpeded by interstellar debris, magnetic fields, or photons, thus preserving important information about the source, with different sites of production that influence the neutrino energy from nuclear processes in very dense and hot environments producing thermal MeV energy neutrinos to cosmic acceleration sites, where matter collides in shocks, producing high energy neutrinos in the O(>GeV-TeV). These neutrinos can be observed by neutrino telescopes such as the IceCube Neutrino Observatory, which has sensitivity for neutrinos from the MeV to >PeV energy ranges. In this thesis, we performed several searches, focusing on MeV neutrinos from Gamma Ray Bursts and Neutron Star Mergers, making use of information from other messengers such as photons and gravitational waves to inform our search, and >GeV neutrinos from Core-Collapse Supernovae. We produced MeV neutrino flux limits for GRB 221009A and provided detection horizon limits for >GeV neutrinos from Core-Collapse Supernovae. We also introduced a novel methodology for producing model-independent MeV neutrino flux and luminosity limits, developed a new IceCube MeV energy real-time fast analysis for the follow-up of external alerts from other observatories, and demonstrated how to search for MeV neutrinos correlated with gravitational waves.
Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2024. p. 121
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 2426
Keywords
Neutrinos, Gravitational Waves, Neutron Star Mergers, Core-Collapse Supernova, Supernovae, High-Energy Neutrinos, Low-Energy Neutrinos, Astrophysical Neutrinos
National Category
Astronomy, Astrophysics and Cosmology Subatomic Physics
Research subject
Physics
Identifiers
urn:nbn:se:uu:diva-535303 (URN)978-91-513-2185-1 (ISBN)
Public defence
2024-09-19, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15 (English)
Opponent
Supervisors
2024-08-272024-08-012024-08-27