Conveners
Contributed 04: 04
- Manibrata Sen (UC Berkeley)
Indirect searches for signatures of corpuscular dark matter have been performed using all cosmic messengers: gamma rays, cosmic rays, and neutrinos. The search for dark matter from neutrinos is of particular importance since they are the only courier that can reach detectors from dark matter processes in dense environments, such as the core of the Sun or Earth, or from the edge of the...
We explore the potential of current and future liquid scintillator neutrino detectors of $\mathcal O (10)$ kt mass to localize a pre-supernova neutrino signal in the sky. In the hours preceding the core collapse of a nearby star (at distance $D$ less than or equal to $1$ kpc), tens to hundreds of inverse beta decay events will be recorded, and their reconstructed topology in the detector can...
Collective neutrino oscillations are predicted to occur in supernovae, neutron-star mergers, and potentially the early universe, with ramifications for the evolution and observables of these environments. This talk will survey our current understanding of the phenomenology, which has recently seen transformative developments. It will also overview the open questions that are poised to be...
In core-collapse supernovae and merging of neutron stars a very large number of neutrinos are produced and impact the subsequent evolution of these compact objects. In this work I study neutrino flavor oscillations under the influence of the self-energy induced by neutrino-neutrino interactions, called collective oscillations. I study the flavor evolution of a dense neutrino gas by considering...
Inelastic up-scattering of solar neutrinos during their passage through the earth can yield a flux of unstable right-handed neutrinos (RH$\nu$s) provided their mass is relatively light ($m<20$ MeV). These same particles can decay inside terrestrial detectors, producing visible signatures. For example if the up-scattering is mediated by a transition dipole operator the RH$\nu$ can deposit a...
Neutrino interactions with matter will set the neutrino luminosity, spectra, and duration of the neutrino signal from the next galactic core-collapse supernovae. Flavor oscillations will mix the signals from different neutrino species. The exciting prospect of fast flavor instabilities deep inside the supernova shock suggest that these processes occur at the same time and location, influencing...