Prospects for using future detectors to study diffuse neutrinos from relic supernova

• Grant number: 09/09927-4
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: November 22, 2009
• End date: December 05, 2009
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Orlando Luis Goulart Peres
• Grantee: Orlando Luis Goulart Peres
• Visiting researcher: Cecilia Lunardini
• Visiting researcher institution: Arizona State University, Phoenix (ASU), United States
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

In year of 1987, it was detected a supernova explosion in Magelanic Clouds though optical observations. At same time, it was measured neutrinos signals in different detectors. From extrapolations from present supernova rate explosions, we are confident that supernovas rate was higher for larger redshift. From that we expect also a diffuse flux from this relic supernova explosions. But until now, this flux was not detected. Our project is to study the designs of future experiments to detect these diffuse neutrinos and track down which information can be extracted from a combined measurement of neutrinos of different flavors. We will ask ourselves if we can determine the supernova rate explosion for different redshifts using only this diffuse neutrino rate. Also a big uncertainty in the predictions is the modeling of supernova neutrino production. (AU)