Neutrino Emissions in All Flavors up to the Pre-bounce of Massive Stars and the Possibility of Their Detections

Chinami Kato, Hiroki Nagakura, Shun Furusawa, Koh Takahashi, Hideyuki Umeda, Takashi Yoshida, Koji Ishidoshiro, Shoichi Yamada

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

This paper is a sequel to our 2015 paper, Kato et al., which calculated the luminosities and spectra of electron-type anti-neutrinos (νe) from the progenitors of core-collapse supernovae. Expecting that the capability to detect electron-type neutrinos (νe) will increase dramatically with the emergence of liquid-argon detectors such as DUNE, we broaden the scope in this study to include all flavors of neutrinos emitted from the pre-bounce phase. We pick up three progenitor models of electron capture supernovae (ECSNe) and iron-core collapse supernovae (FeCCSNe). We find that the number luminosities reach ∼1057 s1and 1053 s1 at maximum for νe and νe, respectively. We also estimate the numbers of detection events at terrestrial neutrino detectors including DUNE, taking flavor oscillations into account and assuming the distance to the progenitors to be 200 pc. It is demonstrated that νe from the ECSN progenitor will be undetected at almost all detectors, whereas we will be able to observe ≳15,900 νe at DUNE for the inverted mass hierarchy. From the FeCCSN progenitors, the number of νe events will be largest for JUNO, 200-900 νe, depending on the mass hierarchy, whereas the number of νe events at DUNE is ≳2100 for the inverted mass hierarchy. These results imply that the detection of νe is useful to distinguish progenitors of FeCCSNe from those of ECSNe, while νe will provide us with detailed information on the collapse phase regardless of the type and mass of the progenitor.

Original languageEnglish
Article number48
JournalAstrophysical Journal
Volume848
Issue number1
DOIs
Publication statusPublished - 2017 Oct 10

Keywords

  • neutrinos
  • stars: evolution
  • stars: massive
  • supernovae: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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