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Search for Astrophysical Neutrinos from 1FLE Blazars with IceCube
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- Abbasi, R. (author)
- Loyola Univ Chicago, Dept Phys, Chicago, IL 60660 USA
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- Beise, Jakob (author)
- Uppsala universitet,Högenergifysik
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- Botner, Olga (author)
- Uppsala universitet,Högenergifysik
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- Glaser, Christian (author)
- Uppsala universitet,Högenergifysik
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- Hallgren, Allan, 1951- (author)
- Uppsala universitet,Högenergifysik
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- O'Sullivan, Erin (author)
- Uppsala universitet,Högenergifysik
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- Pérez de los Heros, Carlos (author)
- Uppsala universitet,Högenergifysik
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- Sharma, A. (author)
- Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden
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- Valtonen-Mattila, Nora (author)
- Uppsala universitet,Högenergifysik
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- Zhelnin, P. (author)
- Harvard Univ, Dept Phys, Cambridge, MA 02138 USA;Harvard Univ, Lab Particle Phys & Cosmol, Cambridge, MA USA
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- Ahrens, Maryon (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Deoskar, Kunal (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Finley, Chad (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Hultqvist, Klas (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Jansson, Matti (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Walck, Christian (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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(creator_code:org_t)
- 2022-10-12
- 2022
- English.
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In: Astrophysical Journal. - : IOP Publishing Ltd. - 0004-637X .- 1538-4357. ; 938:1
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Abstract
Subject headings
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- The origin of astrophysical neutrinos has yet to be determined. The IceCube Neutrino Observatory has observed astrophysical neutrinos but has not yet identified their sources. Blazars are promising source candidates, but previous searches for neutrino emission from populations of blazars detected in $\gtrsim$ GeV gamma-rays have not observed any significant neutrino excess. Recent findings in multi-messenger astronomy indicate that high-energy photons, co-produced with high-energy neutrinos, are likely to be absorbed and reemitted at lower energies. Thus, lower-energy photons may be better indicators of TeV-PeV neutrino production. This paper presents the first time-integrated stacking search for astrophysical neutrino emission from MeV-detected blazars in the first Fermi-LAT low energy catalog (1FLE) using ten years of IceCube muon-neutrino data. The results of this analysis are found to be consistent with a background-only hypothesis. Assuming an E$<^>{-2}$ neutrino spectrum and proportionality between the blazars' MeV gamma-ray fluxes and TeV-PeV neutrino flux, the upper limit on the 1FLE blazar energy-scaled neutrino flux is determined to be $1.64 \times 10<^>{-12}$ TeV cm$<^>{-2}$ s$<^>{-1}$ at 90% confidence level. This upper limit is approximately 1% of IceCube's diffuse muon-neutrino flux measurement.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Particle astrophysics
- High energy astrophysics
- Cosmic ray sources
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Abbasi, R.
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Beise, Jakob
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Botner, Olga
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Glaser, Christia ...
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Hallgren, Allan, ...
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O'Sullivan, Erin
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Pérez de los Her ...
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Sharma, A.
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Valtonen-Mattila ...
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Zhelnin, P.
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Ahrens, Maryon
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Deoskar, Kunal
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Finley, Chad
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Hultqvist, Klas
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Jansson, Matti
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Walck, Christian
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Uppsala University
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Stockholm University