Published May 1, 2009 | Version v1
Journal article Metadata-only

THE IMPACT OF NEUTRINO MAGNETIC MOMENTS ON THE EVOLUTION OF MASSIVE STARS

Creators

  • 1. Theoretical School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455 (United States)
  • 2. Elementary Particles and Field Theory Group, MS B285, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)
  • 3. Nuclear Physics Group, MS B283, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

Description

We explore the sensitivity of massive stars to neutrino magnetic moments. We find that the additional cooling due to the neutrino magnetic moments brings about qualitative changes to the structure and evolution of stars in the mass window 7 M sun ∼< M ∼< 18 M sun, rather than simply changing the timescales for the burning. We describe some of the consequences of this modified evolution: the shifts in the threshold masses for creating core-collapse supernovae and oxygen-neon-magnesium white dwarfs and the appearance of a new type of supernova in which a partial carbon-oxygen core explodes within a massive star. The resulting sensitivity to the magnetic moment is at the level of (2-4) x 10-11 μB.

Availability note (English)

Available from http://dx.doi.org/10.1088/0004-637X/696/1/608

Additional details

Identifiers

DOI
10.1088/0004-637X/696/1/608;

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
696
Journal Issue
1
Journal Page Range
p. 608-619
ISSN
0004-637X
CODEN
ASJOAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41042472
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
CARBON; MAGNESIUM; MAGNETIC MOMENTS; NEON; NEUTRINOS; OXYGEN; STAR EVOLUTION; SUPERNOVAE; WHITE DWARF STARS
Descriptors DEC
ALKALINE EARTH METALS; BINARY STARS; DWARF STARS; ELEMENTARY PARTICLES; ELEMENTS; ERUPTIVE VARIABLE STARS; EVOLUTION; FERMIONS; FLUIDS; GASES; LEPTONS; MASSLESS PARTICLES; METALS; NONMETALS; RARE GASES; STARS; VARIABLE STARS