The diffuse supernova neutrino flux, supernova rate and SN1987A

Cecilia Lunardini

doi:10.1016/j.astropartphys.2006.06.008

The diffuse supernova neutrino flux, supernova rate and SN1987A

Cecilia Lunardini

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

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 language	English (US)
Pages (from-to)	190-201
Number of pages	12
Journal	Astroparticle Physics
Volume	26
Issue number	3
DOIs	https://doi.org/10.1016/j.astropartphys.2006.06.008
State	Published - Oct 2006
Externally published	Yes

Keywords

Core collapse supernovae
Diffuse cosmic neutrino fluxes
Neutrinos

ASJC Scopus subject areas

Astronomy and Astrophysics

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10.1016/j.astropartphys.2006.06.008

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@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",

note = "Funding Information: I am very grateful to A. Friedland, W. Haxton and A. Yu. Smirnov for helpful discussions and comments on the first version of the manuscript. I warmly thank E. Cappellaro, M. Giavalisco, M. Maltoni and M. Turatto for fruitful private communications. I am indebted to the anonymous referee for crucial comments. I acknowledge support from the INT-SCiDAC Grant Number DE-FC02-01ER41187.",

year = "2006",

month = oct,

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",

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TY - JOUR

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

AU - Lunardini, Cecilia

N1 - Funding Information: I am very grateful to A. Friedland, W. Haxton and A. Yu. Smirnov for helpful discussions and comments on the first version of the manuscript. I warmly thank E. Cappellaro, M. Giavalisco, M. Maltoni and M. Turatto for fruitful private communications. I am indebted to the anonymous referee for crucial comments. I acknowledge support from the INT-SCiDAC Grant Number DE-FC02-01ER41187.

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

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U2 - 10.1016/j.astropartphys.2006.06.008

DO - 10.1016/j.astropartphys.2006.06.008

M3 - Article

AN - SCOPUS:33749513184

SN - 0927-6505

VL - 26

SP - 190

EP - 201

JO - Astroparticle Physics

JF - Astroparticle Physics

IS - 3

ER -

The diffuse supernova neutrino flux, supernova rate and SN1987A

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Keywords

ASJC Scopus subject areas

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