Nucleon spin fluctuations and the supernova emission of neutrinos and axions

Journal Article · Mon Apr 01 00:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.2621· OSTI ID:284476

Janka, H ^[1]; Keil, W ^[2]; Raffelt, G ^[3]; Seckel, D ^[4]

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1. Department of Astronomy and Astrophysics, The University of Chicago, Chicago, Illinois 60637-1433 (United States)
2. Max-Planck-Institut fuer Astrophysik, Karl-Schwarzschild-Strasse 1, 85740 Garching (Germany)
3. Max-Planck-Institut fuer Physik, Foehringer Ring 6, 80805 Muenchen (Germany)
4. Bartol Research Institute, University of Delaware, Newark, Delaware 19716 (United States)

In the hot and dense medium of a supernova (SN) core, the nucleon spins fluctuate so fast that the axial-vector neutrino opacity and the axion emissivity are expected to be significantly modified. Axions with {ital m}{sub {ital a}}{approx_lt}10{sup {minus}2} eV are not excluded by SN 1987A. A substantial transfer of energy in neutrino-nucleon ({nu}{ital N}) collisions is enabled which may alter the spectra of SN neutrinos relative to calculations where energy-conserving {nu}{ital N} collisions had been assumed near the neutrinosphere. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: AC02-78ER05007
• OSTI ID: 284476
• Journal Information: Physical Review Letters, Vol. 76, Issue 15; Other Information: PBD: Apr 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
NUCLEONS
SPIN
FLUCTUATIONS
NEUTRINOS
EMISSION
AXIONS
SUPERNOVAE
ENERGY TRANSFER
NEUTRINO-NUCLEON INTERACTIONS