Neutrinos from type Ia supernovae: The deflagration-to-detonation transition scenario

Journal Article · 19 July 2016 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.94.025026 · OSTI ID:1325194

Wright, Warren P. ^[1]; Nagaraj, Gautam ^[1]; Kneller, James P. ^[1]; Scholberg, Kate ^[2]; Seitenzahl, Ivo R. ^[3]

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1. North Carolina State Univ., Raleigh, NC (United States)
2. Duke Univ., Durham, NC (United States)
3. Australian National Univ., Canberra, ACT (Australia); ARC Centre of Excellence for All-Sky Astrophysics (CAASTRO) (Australia)

It has long been recognized that the neutrinos detected from the next core-collapse supernova in the Galaxy have the potential to reveal important information about the dynamics of the explosion and the nucleosynthesis conditions as well as allowing us to probe the properties of the neutrino itself. The neutrinos emitted from thermonuclear—type Ia—supernovae also possess the same potential, although these supernovae are dimmer neutrino sources. For the first time, we calculate the time, energy, line of sight, and neutrino-flavor-dependent features of the neutrino signal expected from a three-dimensional delayed-detonation explosion simulation, where a deflagration-to-detonation transition triggers the complete disruption of a near-Chandrasekhar mass carbon-oxygen white dwarf. We also calculate the neutrino flavor evolution along eight lines of sight through the simulation as a function of time and energy using an exact three-flavor transformation code. We identify a characteristic spectral peak at ˜10 MeV as a signature of electron captures on copper. This peak is a potentially distinguishing feature of explosion models since it reflects the nucleosynthesis conditions early in the explosion. We simulate the event rates in the Super-K, Hyper-K, JUNO, and DUNE neutrino detectors with the SNOwGLoBES event rate calculation software and also compute the IceCube signal. Hyper-K will be able to detect neutrinos from our model out to a distance of ˜10 kpc. Here, at 1 kpc, JUNO, Super-K, and DUNE would register a few events while IceCube and Hyper-K would register several tens of events.

• Research Organization: North Carolina State University, Raleigh, NC (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE
• Grant/Contract Number: SC0006417
• OSTI ID: 1325194
• Alternate ID(s): OSTI ID: 1264796
• Journal Information: Physical Review D, Vol. 94, Issue 2; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English