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- W3102912472 startingPage "1284" @default.
- W3102912472 abstract "In the formation process of black holes, the density and temperature of matter become sufficiently high for quarks and pions to appear. In this study we numerically investigate stellar core collapse and black hole formation taking into account the equations of state involving quarks and/or pions. In our simulations, we utilize a code that solves the general relativistic hydrodynamics and neutrino transfer equations simultaneously, treating neutrino reactions in detail under spherical symmetry. Initial models with three different masses, namely, 40, 100 and 375Msolar, are adopted. Our results show that quarks and pions shorten the duration of neutrino emission if the collapse bounces before black hole formation. In addition, pions increase the luminosity and average energy of neutrinos before black hole formation. We also find that the hadron-quark phase transition leads to an interesting evolution of temperature. Moreover, the neutrino event number is evaluated for the currently operating neutrino detector, SuperKamiokande, to confirm that it is not only detectable but also affected by the emergence of quarks and pions for Galactic events. While there are some issues, such as hyperons, beyond the scope of this study, this is the first serious attempt to assess the impact of quarks and pions in dynamical simulations of black hole formation and will serve as an important foundation for future studies." @default.
- W3102912472 created "2020-11-23" @default.
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- W3102912472 date "2010-09-08" @default.
- W3102912472 modified "2023-09-27" @default.
- W3102912472 title "IMPACT OF QUARKS AND PIONS ON DYNAMICS AND NEUTRINO SIGNAL OF BLACK HOLE FORMATION IN NON-ROTATING STELLAR CORE COLLAPSE" @default.
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- W3102912472 doi "https://doi.org/10.1088/0004-637x/721/2/1284" @default.
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