A look at Supernova 1987A

Conference · Thu Oct 01 00:00:00 EDT 1987

DOI:https://doi.org/10.1016/0920-5632(88)90198-3· OSTI ID:5599114

Schramm, D N

Supernova 1987A is reviewed with emphasis on the neutrino observations. It is shown that the results fit well with the expectations for neutrino temperatures (T approx. 4epsilon/sub 0/4.5 MeV) and total energy emitted (2epsilon/sub 0/4 x 10/sup 53/ ergs). It is argued that the detection tends to favor collapse models that yield emission for 10 second timescales with a 1epsilon/sub 0/2 second early accretion phase followed by Kelvin-Helmholtz cooling as opposed to prompt shocks with the immediate onset of cooling. It is also argued that the probable detection of one or more electron scattering event favors a superthermal tail at high energies. Neutrino mass limits and flavor limits are comparable to laboratory experiments. An estimate for future collapse rates in our galaxy of 1/7 year is made based on nucleosynthesis yields. The supernova also has eliminated many axion and majoron models. 69 refs., 3 figs., 27 tabs.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, IL (United States)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 5599114
• Report Number(s): FNAL/C-87/161-A; CONF-870797-12; ON: DE88003411; TRN: 88-006423
• Resource Relation: Journal Volume: 3; Conference: International symposium on lepton and photon interactions at high energies, Hamburg, F.R. Germany, 27 Jul 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERNOVAE
NEUTRINOS
ANGULAR DISTRIBUTION
CROSS SECTIONS
LIFETIME
MASS
NEUTRINO DETECTION
NEUTRON STARS
NUCLEOSYNTHESIS
PARTICLE DECAY
DECAY
DETECTION
DISTRIBUTION
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
FERMIONS
LEPTONS
MASSLESS PARTICLES
RADIATION DETECTION
STARS
SYNTHESIS
VARIABLE STARS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources