Supernova Neutrino in a Strangeon Star Model
arXiv:1705.08188 · doi:10.1088/1674-4527/17/9/92
Abstract
The neutrino burst detected during supernova SN1987A is explained in a strangeon star model, in which it is proposed that a pulsar-like compact object is composed of strangeons (strangeon: an abbreviation of "strange nucleon"). A nascent strangeon star's initial internal energy is calculated, with the inclusion of pion excitation (energy around 10^53 erg, comparable to the gravitational binding energy of a collapsed core). A liquid-solid phase transition at temperature ~ 1-2 MeV may occur only a few ten-seconds after core-collapse, and the thermal evolution of strangeon star is then modeled. It is found that the neutrino burst observed from SN 1987A could be re-produced in such a cooling model.
15 pages, 7 figures, 1 tabel
References in corpus (7)
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- The superflares of soft Gamma-ray repeatres: giant quakes in solid quark stars?
- Two types of glitches in a solid quark star model
- The Birth of Quark Stars: Photon-driven Supernovae?
- An Ultra Low Mass and Small Radius Compact Object in 4U 1746-37?
- Searching for a Pulsar in SN1987A