Speaker
Mr
Odysse Halim
(Gran Sasso Science Institute (GSSI), L’Aquila, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Laboratori Nazionali del Gran Sasso (LNGS), Assergi, Italy)
Description
Core-Collapse Supernovae (CCSN) are expected to release the $99\%$ of their energy through MeV neutrinos and a network of detectors is operative to look for these events. However, when the source distance increases and/or the average energy of emitted neutrinos decreases, the signal statistics drop and the identification of these low statistic astrophysical bursts could be challenging. In a standard search, neutrino detectors characterise the observed clusters of events with a parameter called multiplicity, i.e. the number of collected events in a time-window. We introduce a new parameter called $\xi$ (=multiplicity/duration of the cluster) that adds the information of the temporal behaviour of the expected signal with respect to background. Together with the multiplicity, this parameter can optimise the search as well as increase the search horizon. Also the network of detectors (like SNEWS), that correlate the times in different datasets in order to disentangle a signal from noise, can profit from the new suggested parameter to further optimise the search. Finally, this work could be of importance also for the multi-messenger era, together with gravitational wave network, in order to hunt the CCSNe. Taking into account the small expected CCSN rate, a miss in this detection is not an option.
Primary author
Mr
Odysse Halim
(Gran Sasso Science Institute (GSSI), L’Aquila, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Laboratori Nazionali del Gran Sasso (LNGS), Assergi, Italy)
Co-authors
Dr
Carlo Vigorito
(University of Turin, Turin, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Torino, Turin, Italy)
Dr
Claudio Casentini
(Istituto Nazionale di Astrofisica - Istituto di Astrofisica e Planetologia Spaziali (INAF - IAPS), Rome, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Roma Tor Vergata, Rome, Italy)
Dr
Giulia Pagliaroli
(Gran Sasso Science Institute (GSSI), L’Aquila, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Laboratori Nazionali del Gran Sasso (LNGS), Assergi, Italy)
Dr
Marco Drago
(Gran Sasso Science Institute (GSSI), L’Aquila, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Laboratori Nazionali del Gran Sasso (LNGS), Assergi, Italy)
Prof.
Viviana Fafone
(University of Rome Tor Vergata, Rome, Italy; INFN (Istituto Nazionale Fisica Nucleare) sezione di Roma Tor Vergata, Rome, Italy)
