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

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

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

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.

本文言語英語
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
出版ステータス出版済み - 2010
外部発表はい
イベント7th Tours Symposium on Nuclear Physics and Astrophysics - Kobe, 日本
継続期間: 11月 16 200911月 20 2009

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

その他

その他7th Tours Symposium on Nuclear Physics and Astrophysics
国/地域日本
CityKobe
Period11/16/0911/20/09

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学一般

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