Distinguishing Newly Born Strange Stars from Neutron Stars with g-Mode Oscillations
Abstract
The gravity-mode (g-mode) eigenfrequencies of newly born strange quark stars (SQSs) and neutron stars (NSs) are studied. It is found that the eigenfrequencies in SQSs are much lower than those in NSs by almost 1 order of magnitude, since the components of a SQS are all extremely relativistic particles while nucleons in a NS are nonrelativistic. We therefore propose that newly born SQSs can be distinguished from the NSs by detecting the eigenfrequencies of the g-mode pulsations of supernovae cores through gravitational radiation by LIGO-class detectors.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2008
- DOI:
- 10.1103/PhysRevLett.101.181102
- arXiv:
- arXiv:0810.1084
- Bibcode:
- 2008PhRvL.101r1102F
- Keywords:
-
- 97.60.Gb;
- 26.60.-c;
- 95.85.Sz;
- 97.10.Sj;
- Pulsars;
- Nuclear matter aspects of neutron stars;
- Gravitational radiation magnetic fields and other observations;
- Pulsations oscillations and stellar seismology;
- Nuclear Theory;
- Astrophysics;
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 1 figure