Skip to main content
Go to the home page of the European Commission (opens in new window)
English en
CORDIS - EU research results
CORDIS

Precision Particle Physics from extreme ASTROphysical transients

Project description

Exploring supernovae and neutron star mergers

Supernovae (SN) and neutron star mergers (NSM) contain matter that experiences extreme conditions and exhibit a variety of processes, including both the standard model (SM) and beyond the standard model (BSM). BSM particles are produced in the cores of these objects and subsequently emitted into space. Supported by the Marie Skłodowska-Curie Actions programme, the P3fromASTRO project will study NSMs and SN bounds on BSM particle emissions using novel SN simulations, expanding our understanding of BSM particles and their interactions with each other, and various phenomena. Ultimately, the project will investigate whether BSM particle emissions have influenced several past observations and findings.

Objective

Supernovae (SNe) and neutron star mergers (NSMs) host matter in extreme conditions, exhibiting processes, within the Standard Model (SM) and beyond it (BSM), not testable on Earth. The hot, dense cores of these objects are factories of BSM particles, such as axions, sterile neutrinos, and millicharged particles (MCPs). BSM particles emission may alter the duration of the neutrino burst observed from the historical SN 1987A, but the seminal studies are based on outdated SN simulations. BSM particle emission would also have produced a characteristic gamma-ray burst concurrent with the NSM GW 170817, potentially constraining multiple BSM models, including sterile neutrinos and MCPs, for which no investigation exists. Further, self-interactions in the BSM sector, predicted for many dark matter (DM) candidates but neglected in historical studies, can alter the nature of the BSM outflow. This action will provide a unified answer to these shortcomings, reassessing SN bounds on BSM particle emission using updated SN simulations, including the impact of potential self-interactions, and extending the use of NSMs as a probe of BSM particles. Further, the dense neutrino outflows are sizably affected by neutrino self-interactions. Even SM weak interactions trigger collective flavor conversions, whose outcome is only recently being cleared up. Secret neutrino self-interactions, stronger than the weak ones, can alter both the neutrino light curve and flavor conversions. We will consider this impact to potentially draw constraints on secret neutrino interactions.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

See all projects funded under this funding scheme

Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

See all projects funded under this call

Coordinator

ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE
Net EU contribution
€ 292 118,88
Address
ESPLANADE DES PARTICULES 1 PARCELLE 11482 DE MEYRIN BATIMENT CADASTRAL 1046
1211 GENEVE 23
Switzerland
Region
Schweiz/Suisse/Svizzera Région lémanique Genève
Activity type
Research Organisations
Links
Total cost
No data