Neutrinos and the discovery of the diffuse supernova neutrino background
The observation that neutrinos change flavor during propagation – termed neutrino oscillations - has shown that neutrinos are massive elementary particles with mixings which points to physics beyond the Standard Model and impacts astrophysics and cosmology. Neutrinos from core-collapse supernovae were observed only once, with SN1987A. Important open questions remain both on neutrino properties and on flavor evolution in dense environments.
The "Stage" is focussed on theoretical neutrino astrophysics and involves both theoretical and phenomenological aspects, in relation with the upcoming discovery of the diffuse supernova neutrino background (DSNB). The DSNB fluxes depend on the core-collapse supernova rate (related to the star formation rate) and on redshifted supernova neutrino fluxes. The latter involve flavor evolution in dense environements which requires further theoretical understanding, in particular due to the presence of significant neutrino self-interactions. During the stage the student will work on the predictions of the neutrino spectra and on what we will learn from the upcoming measurement of the diffuse supernova neutrino background, either by the Super-Kamiokande+Gd (just started) or the Hyper-Kamiokande (approved) experiments in Japan.
« Stage » supervisor :
Dr. Maria Cristina Volpe
Astroparticle and Cosmology (APC) Laboratory
Theory Group
Email : volpe
apc.univ-paris7.fr
Web site :
https://www.apc.univ-paris7.fr/APC_CS/fr/users/volpe
The observation that neutrinos change flavor during propagation – termed neutrino oscillations - has shown that neutrinos are massive elementary particles with mixings which points to physics beyond the Standard Model and impacts astrophysics and cosmology. Neutrinos from core-collapse supernovae were observed only once, with SN1987A. Important open questions remain both on neutrino properties and on flavor evolution in dense environments.
The "Stage" is focussed on theoretical neutrino astrophysics and involves both theoretical and phenomenological aspects, in relation with the upcoming discovery of the diffuse supernova neutrino background (DSNB). The DSNB fluxes depend on the core-collapse supernova rate (related to the star formation rate) and on redshifted supernova neutrino fluxes. The latter involve flavor evolution in dense environements which requires further theoretical understanding, in particular due to the presence of significant neutrino self-interactions. During the stage the student will work on the predictions of the neutrino spectra and on what we will learn from the upcoming measurement of the diffuse supernova neutrino background, either by the Super-Kamiokande+Gd (just started) or the Hyper-Kamiokande (approved) experiments in Japan.
« Stage » supervisor :
Dr. Maria Cristina Volpe
Astroparticle and Cosmology (APC) Laboratory
Theory Group
Email : volpe
apc.univ-paris7.frWeb site :
https://www.apc.univ-paris7.fr/APC_CS/fr/users/volpe
Responsable:
Maria Cristina Volpe
Services/Groupes:
Année:
2021
Formations:
Stage
Niveau demandé:
M2
