Possible evidence that pulsars are quark stars
arXiv:0709.1305 · doi:10.1063/1.2840396
Abstract
It is a pity that the real state of matter in pulsar-like stars is still not determined confidently because of the uncertainty about cold matter at supranuclear density, even 40 years after the discovery of pulsar. Nuclear matter (related to neutron stars) is one of the speculations for the inner constitution of pulsars even from the Landau's time more than 70 years ago, but quark matter (related to quark stars) is an alternative due to the fact of asymptotic freedom of interaction between quarks as the standard model of particle physics develops since 1960s. Therefore, one has to focus on astrophysical observations in order to answer what the nature of pulsars is. In this presentation, I would like to summarize possible observational evidence/hints that pulsar-like stars could be quark stars, and to address achievable clear evidence for quark stars in the future experiments.
6 pages, 2 figures; a talk at the international conference "Astrophysics of Compact Objects" (July 1-7, 2007; Huangshan, China); http://vega.bac.pku.edu.cn/rxxu/publications/index_C.htm. A mistake in Fig.1 is corrected; Correction of typos
References in corpus (17)
- The Physics of Neutron Stars
- Strange Quark Matter and Compact Stars
- Maximum elastic deformations of compact stars with exotic equations of state
- All-sky search for periodic gravitational waves in LIGO S4 data
- The rigidity of crystalline color superconducting quark matter
- Gamma-Ray Bursts from quark stars
- Quakes in Solid Quark Stars
- Is PSR B0943+10 a low-mass quark star?
- Constraining crystalline color superconducting quark matter with gravitational-wave data
- A note on the discovery of absorption features in 1E 1207.4-5209
- The Birth of Quark Stars: Photon-driven Supernovae?
- Supernovae, Pulsars and Gamma-Ray Bursts: A Unified Picture
- Pulsar slow glitches in a solid quark star model
- Discovery of a remarkable subpulse drift pattern in PSR B0818-41
- To probe into pulsar's interior through gravitational waves
- Does Sub-millisecond Pulsar XTE J1739-285 Contain a Low Magnetic Neutron Star or Quark Star ?
- Color-charged Quark Matter in Astrophysics?