Neutrino astronomy as a probe into physics of hot and dense matter

Ken'ichiro Nakazato*, Kohsuke Sumiyoshi, Hideyuki Suzuki, Shoichi Yamada

*この研究の対応する著者

研究成果: Conference contribution

抄録

We have performed several simulations on non-rotational core-collapses of a star with 4OM⊙ by a general relativistic ν-radiation-hydrodynamics code and computed quantitatively the dynamics up to the black hole formation as well as the neutrino luminosities and spectra. Employing different hadronic equations of state (EOS), we have demonstrated that the duration of neutrino emissions from this event is sensitive to the stiffness of EOS at supra-nuclear densities and, therefore, that the observation of neutrinos from such an event will provide us with valuable information on the properties of dense and hot hadronic matter as well as on the maximum mass of proto-neutron stars. However, this approach can not distinguish EOS's with a similar stiffness: a soft nucleonic EOS and a hyperonic EOS, for example. In this study, we attempt to break this degeneracy by analyzing more in detail the time variation of neutrino numbers observed at a terrestrial detector. Performing the Kolmogolov- Smirnovtest, which is free from the ambiguity of the distance to the progenitor, we show that the break-up of the degeneracy of hadronic EOS's is indeed feasible for Galactic events.

本文言語English
ホスト出版物のタイトルTours Symposium on Nuclear Physics and Astrophysics - VII
ページ145-150
ページ数6
DOI
出版ステータスPublished - 2010 7月 20
イベント7th Tours Symposium on Nuclear Physics and Astrophysics - Kobe, Japan
継続期間: 2009 11月 162009 11月 20

出版物シリーズ

名前AIP Conference Proceedings
1238
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

Other7th Tours Symposium on Nuclear Physics and Astrophysics
国/地域Japan
CityKobe
Period09/11/1609/11/20

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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