The diffuse supernova neutrino flux, supernova rate and SN1987A

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

I calculate the diffuse flux of electron antineutrinos from all supernovae using the information on the neutrino spectrum from SN1987A and the information on the rate of supernovae from direct supernova observations. The interval of flux allowed at 99% confidence level is ∼0.05-0.35 cm-2 s-1 above the SuperKamiokande (SK) energy cut of 19.3 MeV. This result is at least a factor of ∼4 smaller than the current SK upper limit of 1.2 cm-2 s-1, thus motivating the experimental efforts to lower the detection energy threshold or to upgrade to higher volumes. A Megaton water Cherenkov detector with ∼90% efficiency would record ∼2-44 inverse beta decay events a year depending on the energy cut.

Original languageEnglish (US)
Pages (from-to)190-201
Number of pages12
JournalAstroparticle Physics
Volume26
Issue number3
DOIs
StatePublished - Oct 2006
Externally publishedYes

Fingerprint

supernovae
neutrinos
antineutrinos
energy
confidence
intervals
thresholds
detectors
decay
water
electrons

Keywords

  • Core collapse supernovae
  • Diffuse cosmic neutrino fluxes
  • Neutrinos

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • Atomic and Molecular Physics, and Optics

Cite this

The diffuse supernova neutrino flux, supernova rate and SN1987A. / Lunardini, Cecilia.

In: Astroparticle Physics, Vol. 26, No. 3, 10.2006, p. 190-201.

Research output: Contribution to journalArticle

@article{7464dabcdd764a3783939d0c0da09cb9,
title = "The diffuse supernova neutrino flux, supernova rate and SN1987A",
abstract = "I calculate the diffuse flux of electron antineutrinos from all supernovae using the information on the neutrino spectrum from SN1987A and the information on the rate of supernovae from direct supernova observations. The interval of flux allowed at 99{\%} confidence level is ∼0.05-0.35 cm-2 s-1 above the SuperKamiokande (SK) energy cut of 19.3 MeV. This result is at least a factor of ∼4 smaller than the current SK upper limit of 1.2 cm-2 s-1, thus motivating the experimental efforts to lower the detection energy threshold or to upgrade to higher volumes. A Megaton water Cherenkov detector with ∼90{\%} efficiency would record ∼2-44 inverse beta decay events a year depending on the energy cut.",
keywords = "Core collapse supernovae, Diffuse cosmic neutrino fluxes, Neutrinos",
author = "Cecilia Lunardini",
year = "2006",
month = "10",
doi = "10.1016/j.astropartphys.2006.06.008",
language = "English (US)",
volume = "26",
pages = "190--201",
journal = "Astroparticle Physics",
issn = "0927-6505",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - The diffuse supernova neutrino flux, supernova rate and SN1987A

AU - Lunardini, Cecilia

PY - 2006/10

Y1 - 2006/10

N2 - I calculate the diffuse flux of electron antineutrinos from all supernovae using the information on the neutrino spectrum from SN1987A and the information on the rate of supernovae from direct supernova observations. The interval of flux allowed at 99% confidence level is ∼0.05-0.35 cm-2 s-1 above the SuperKamiokande (SK) energy cut of 19.3 MeV. This result is at least a factor of ∼4 smaller than the current SK upper limit of 1.2 cm-2 s-1, thus motivating the experimental efforts to lower the detection energy threshold or to upgrade to higher volumes. A Megaton water Cherenkov detector with ∼90% efficiency would record ∼2-44 inverse beta decay events a year depending on the energy cut.

AB - I calculate the diffuse flux of electron antineutrinos from all supernovae using the information on the neutrino spectrum from SN1987A and the information on the rate of supernovae from direct supernova observations. The interval of flux allowed at 99% confidence level is ∼0.05-0.35 cm-2 s-1 above the SuperKamiokande (SK) energy cut of 19.3 MeV. This result is at least a factor of ∼4 smaller than the current SK upper limit of 1.2 cm-2 s-1, thus motivating the experimental efforts to lower the detection energy threshold or to upgrade to higher volumes. A Megaton water Cherenkov detector with ∼90% efficiency would record ∼2-44 inverse beta decay events a year depending on the energy cut.

KW - Core collapse supernovae

KW - Diffuse cosmic neutrino fluxes

KW - Neutrinos

UR - http://www.scopus.com/inward/record.url?scp=33749513184&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749513184&partnerID=8YFLogxK

U2 - 10.1016/j.astropartphys.2006.06.008

DO - 10.1016/j.astropartphys.2006.06.008

M3 - Article

VL - 26

SP - 190

EP - 201

JO - Astroparticle Physics

JF - Astroparticle Physics

SN - 0927-6505

IS - 3

ER -