Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rmxac..35..292p&link_type=abstract
XII Latin American IAU Regional Meeting (Eds. G. Magris, G. Bruzual, & L. Carigi) Revista Mexicana de Astronomía y Astrofísica (
Astronomy and Astrophysics
Astrophysics
Scientific paper
Neutrinos emitted from a collapsing stellar core after core bounce, pass through a non monotonous density profile created by the emerging shock wave and a reverse shock produced by the material heated by neutrinos before the onset of the collapse. When the shock wave reaches the resonant region corresponding to the atmospheric mass-square difference (H region) the adiabatic condition is modified, and the neutrino spectrum changes in virtue of phase effects in the oscillation phenomena. We present in this work the results of the application of a method proposed by Dighe et al. to estimate the density profile behind the shock using spectroscopy of realistic neutrino signals from a Galactic supernova in present and future detectors. We test the method and show how a supernova signal can be used not only to constrain neutrino properties but also to reveal astrophysical details of the structure of the collapsing stellar core.
Perez Antonio F.
Zuluaga Jorge I.
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