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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544270.0, MPI für Physik / MPI für Physik
Earth matter effects in supernova neutrinos: Optimal detector locations
Authors:Mirizzi, A.; Raffelt, G. G.; Serpico, P. D.
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Journal of Cosmology and Astroparticle Physics
Journal Abbrev.:JCAP
Issue / Number:009
Start Page:012
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:A model-independent experimental signature for flavor oscillations in the neutrino signal from the next Galactic supernova (SN) would be the observation of Earth matter effects. We calculate the probability for observing a Galactic SN shadowed by the Earth as a function of the detector's geographic latitude. This probability depends only mildly on details of the Galactic SN distribution. A location at the North Pole would be optimal with a shadowing probability of about 60%, but a far-northern location such as Pyhasalmi in Finland, the proposed site for a large-volume scintillator detector, is almost equivalent (58%). We also consider several pairs of detector locations and calculate the probability that only one of them is shadowed, allowing a comparison between a shadowed and a direct signal. For the South Pole combined with Kamioka this probability is almost 75%, for the South Pole combined with Pyhasalmi it is almost 90%. One particular scenario consists of a large-volume scintillator detector located in Pyhasalmi to measure the geo-neutrino flux in a continental location and another such detector in Hawaii to measure it in an oceanic location. The probability that only one of them is shadowed exceeds 50% whereas the probability that at least one is shadowed is about 80%.
Classification / Thesaurus:Astroparticle Physics
Comment of the Author/Creator:17 pages, 6 eps figures. Online tool to calculate the Earth shadowing probabilities available at href{http://www.mppmu.mpg.de/supernova/shadowing}{this http URL} . High-resolution color version of fig_2a and fig_2b available at href{http://www.mppmu.mpg.de/supernova/shadowing/map}{this http URL}
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2006-28
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/astro-ph/0604300
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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