EOS of hyperonic matter for core-collapse supernovae

A. Ohnishi; K. Tsubakihara; K. Sumiyoshi; C. Ishizuka; S. Yamada; H. Suzuki

doi:10.1016/j.nuclphysa.2010.01.222

EOS of hyperonic matter for core-collapse supernovae

A. Ohnishi^*, K. Tsubakihara, K. Sumiyoshi, C. Ishizuka, S. Yamada, H. Suzuki

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We discuss the properties of the supernova matter equation of state (EOS) including hyperons, and the emergence of hyperons in dynamical core-collapse processes. The recently tabulated EOS including hyperons is based on an SU_f (3) extended relativistic mean field (RMF) model, in which the coupling constants of hyperons with scalar mesons are determined to fit the hyperon potential depths in nuclear matter, (U_Σ, U_Ξ) = (+ 30 MeV, - 15 MeV), which are suggested from recent analyses of hyperon production reactions. Hyperon effects are found to be small in the core-collapse and bounce stages, but abundant hyperons appear when the temperature becomes high during black hole formation and promote earlier collapse of the accreting proto-neutron star. The maximum mass of a hot proto-neutron star is discussed, and we give a rough estimate of the critical mass of the accreting proto-neutron star, at which the proto-neutron star re-collapses to a black hole.

Original language	English
Pages (from-to)	374-377
Number of pages	4
Journal	Nuclear Physics A
Volume	835
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2010.01.222
Publication status	Published - 2010 Apr 1

Keywords

EOS
black hole
hyperon
neutrino
supernova

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.nuclphysa.2010.01.222

Cite this

@article{8a4806eb8ee04ceb9a3fa1be0917df19,

title = "EOS of hyperonic matter for core-collapse supernovae",

abstract = "We discuss the properties of the supernova matter equation of state (EOS) including hyperons, and the emergence of hyperons in dynamical core-collapse processes. The recently tabulated EOS including hyperons is based on an SUf (3) extended relativistic mean field (RMF) model, in which the coupling constants of hyperons with scalar mesons are determined to fit the hyperon potential depths in nuclear matter, (UΣ, UΞ) = (+ 30 MeV, - 15 MeV), which are suggested from recent analyses of hyperon production reactions. Hyperon effects are found to be small in the core-collapse and bounce stages, but abundant hyperons appear when the temperature becomes high during black hole formation and promote earlier collapse of the accreting proto-neutron star. The maximum mass of a hot proto-neutron star is discussed, and we give a rough estimate of the critical mass of the accreting proto-neutron star, at which the proto-neutron star re-collapses to a black hole.",

keywords = "EOS, black hole, hyperon, neutrino, supernova",

author = "A. Ohnishi and K. Tsubakihara and K. Sumiyoshi and C. Ishizuka and S. Yamada and H. Suzuki",

note = "Funding Information: This work is supported in part by KAKENHI, under the grant numbers, 17070002 and 19540252, the Global COE Program ”The Next Generation of Physics, Spun from Universality and Emergence”, and the Yukawa International Program for Quark-hadron Sciences (YIPQS).",

year = "2010",

month = apr,

day = "1",

doi = "10.1016/j.nuclphysa.2010.01.222",

language = "English",

volume = "835",

pages = "374--377",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - EOS of hyperonic matter for core-collapse supernovae

AU - Ohnishi, A.

AU - Tsubakihara, K.

AU - Sumiyoshi, K.

AU - Ishizuka, C.

AU - Yamada, S.

AU - Suzuki, H.

N1 - Funding Information: This work is supported in part by KAKENHI, under the grant numbers, 17070002 and 19540252, the Global COE Program ”The Next Generation of Physics, Spun from Universality and Emergence”, and the Yukawa International Program for Quark-hadron Sciences (YIPQS).

PY - 2010/4/1

Y1 - 2010/4/1

N2 - We discuss the properties of the supernova matter equation of state (EOS) including hyperons, and the emergence of hyperons in dynamical core-collapse processes. The recently tabulated EOS including hyperons is based on an SUf (3) extended relativistic mean field (RMF) model, in which the coupling constants of hyperons with scalar mesons are determined to fit the hyperon potential depths in nuclear matter, (UΣ, UΞ) = (+ 30 MeV, - 15 MeV), which are suggested from recent analyses of hyperon production reactions. Hyperon effects are found to be small in the core-collapse and bounce stages, but abundant hyperons appear when the temperature becomes high during black hole formation and promote earlier collapse of the accreting proto-neutron star. The maximum mass of a hot proto-neutron star is discussed, and we give a rough estimate of the critical mass of the accreting proto-neutron star, at which the proto-neutron star re-collapses to a black hole.

AB - We discuss the properties of the supernova matter equation of state (EOS) including hyperons, and the emergence of hyperons in dynamical core-collapse processes. The recently tabulated EOS including hyperons is based on an SUf (3) extended relativistic mean field (RMF) model, in which the coupling constants of hyperons with scalar mesons are determined to fit the hyperon potential depths in nuclear matter, (UΣ, UΞ) = (+ 30 MeV, - 15 MeV), which are suggested from recent analyses of hyperon production reactions. Hyperon effects are found to be small in the core-collapse and bounce stages, but abundant hyperons appear when the temperature becomes high during black hole formation and promote earlier collapse of the accreting proto-neutron star. The maximum mass of a hot proto-neutron star is discussed, and we give a rough estimate of the critical mass of the accreting proto-neutron star, at which the proto-neutron star re-collapses to a black hole.

KW - EOS

KW - black hole

KW - hyperon

KW - neutrino

KW - supernova

UR - http://www.scopus.com/inward/record.url?scp=77649286788&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77649286788&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2010.01.222

DO - 10.1016/j.nuclphysa.2010.01.222

M3 - Article

AN - SCOPUS:77649286788

SN - 0375-9474

VL - 835

SP - 374

EP - 377

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-4

ER -

EOS of hyperonic matter for core-collapse supernovae

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this