Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-24
Phys.Rev.Lett.97:091101,2006
Astronomy and Astrophysics
Astrophysics
4 pages, 4 figures, accepted for publication in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.97.091101
The gravitational collapse of a non-rotating, black-hole-forming massive star is studied by neutrino-radiation-hydrodynamical simulations for two different sets of realistic equation of state of dense matter. We show that the event will produce as many neutrinos as the ordinary supernova, but with distinctive characteristics in luminosities and spectra that will be an unmistakable indication of black hole formation. More importantly, the neutrino signals are quite sensitive to the difference of equation of state and can be used as a useful probe into the properties of dense matter. The event will be unique in that they will be shining only by neutrinos (and, possibly, gravitational waves) but not by photons, and hence they should be an important target of neutrino astronomy.
Chiba Satoshi
Sumiyoshi Kohsuke
Suzuki Hiroshi
Yamada Shoichi
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