TY - JOUR
T1 - Emergence of hyperons in failed supernovae with short neutrino bursts
AU - Sumiyoshi, K.
AU - Nakazato, K.
AU - Ishizuka, C.
AU - Ohnishi, A.
AU - Yamada, S.
AU - Suzuki, H.
N1 - Funding Information:
This work is supported by the Grants-in-Aid for the Scientific Research (18540295, 19540252, 20105004) of the MEXT of Japan. The numerical simulations were performed at the supercomputing resources at JAEA/Tokai, YITP (Kyoto University), RCNP (Osaka University), KEK and CfCA in NAOJ.
PY - 2010/4/1
Y1 - 2010/4/1
N2 - We present that the appearance of hyperons plays a crucial role in failed supernovae from massive stars of ∼ 40 Mȯ. The quick dynamics from the gravitational collapse to the black hole leads to extreme conditions, reaching high densities and temperatures to have strangeness particles, within 1 s after the core bounce. The associated neutrino bursts are short and energetic, being different from ordinary supernova neutrinos, and may provide the information on the strangeness in dense matter. The end point of the duration of neutrino burst is determined by the stiffness of EOS and the appearance of new particle is the trigger of the termination due to the black hole formation. By measuring the duration of burst and the energy spectrum, one can constrain the appearance of exotics. The event numbers of neutrinos from the black-hole-forming collapse at the terrestrial detector are found large enough to utilize this phenomena as a target of neutrino astronomy and a probe of dense matter with strangeness.
AB - We present that the appearance of hyperons plays a crucial role in failed supernovae from massive stars of ∼ 40 Mȯ. The quick dynamics from the gravitational collapse to the black hole leads to extreme conditions, reaching high densities and temperatures to have strangeness particles, within 1 s after the core bounce. The associated neutrino bursts are short and energetic, being different from ordinary supernova neutrinos, and may provide the information on the strangeness in dense matter. The end point of the duration of neutrino burst is determined by the stiffness of EOS and the appearance of new particle is the trigger of the termination due to the black hole formation. By measuring the duration of burst and the energy spectrum, one can constrain the appearance of exotics. The event numbers of neutrinos from the black-hole-forming collapse at the terrestrial detector are found large enough to utilize this phenomena as a target of neutrino astronomy and a probe of dense matter with strangeness.
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U2 - 10.1016/j.nuclphysa.2010.01.205
DO - 10.1016/j.nuclphysa.2010.01.205
M3 - Article
AN - SCOPUS:77649294632
SN - 0375-9474
VL - 835
SP - 295
EP - 302
JO - Nuclear Physics A
JF - Nuclear Physics A
IS - 1-4
ER -