Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 92: Neutrinoastronomie I

T 92.7: Vortrag

Montag, 28. März 2011, 18:15–18:30, 30.41: 105

Hadronic interactions in SN 2006gy — •Steffen Krakau, Martino Olivo, and Julia Becker — Theoretische Physik IV, Fakultät für Physik & Astronomie, Ruhr Universität Bochum, 44780 Bochum

In this talk we investigate photohadronic interactions in supernova explosions, in particular for the bright SN 2006gy, which might be related to pair instability mechanism, where a very massive star loses its outer layer prior to explosion, thus creating a hydrogen rich enviroment. Assuming that the supernova explosion leaves a central pulsar, where protons can be acccelerated up to energies of (10¹⁵−10¹⁸) eV, we calculate the optical depth of photohadronic interactions in this energy range for protons that travel through the supernova envelope. The photon spectrum is approximated by a blackbody spectrum between day 36 and day 92 after the supernova explosion (T=(9000−15000) K).
We also discuss the influence of these interactions on the energy spectrum of the protons and we finally predict the neutrino flux resulting from pγ interactions and from inelastic p p scttering of protons accelerated by the pulsar and target protons from the mass loss episode.