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Search for High-energy Neutrinos from Ultraluminous Infrared Galaxies with IceCube
Journal article   Open access

Search for High-energy Neutrinos from Ultraluminous Infrared Galaxies with IceCube

Maryon Ahrens, Kunal Deoskar, Chad Finley, Klas Hultqvist, Matti Jansson, Christian Walck and IceCube Collaboration
The Astrophysical journal, v 926(1)
2022
url
https://doi.org/10.3847/1538-4357/ac3cb6View
Published, Version of Record (VoR) Open CC BY V4.0

Abstract

Fysik Naturvetenskap Natural Sciences Physical Sciences
Ultraluminous infrared galaxies (ULIRGs) have infrared luminosities  L IR  ≥ 10 12 L ⊙ , making them the most luminous objects in the infrared sky. These dusty objects are generally powered by starbursts with star formation rates that exceed 100  M ⊙  yr −1 , possibly combined with a contribution from an active galactic nucleus. Such environments make ULIRGs plausible sources of astrophysical high-energy neutrinos, which can be observed by the IceCube Neutrino Observatory at the South Pole. We present a stacking search for high-energy neutrinos from a representative sample of 75 ULIRGs with redshift  z  ≤ 0.13 using 7.5 yr of IceCube data. The results are consistent with a background-only observation, yielding upper limits on the neutrino flux from these 75 ULIRGs. For an unbroken  E −2.5  power-law spectrum, we report an upper limit on the stacked flux   at 90% confidence level. In addition, we constrain the contribution of the ULIRG source population to the observed diffuse astrophysical neutrino flux as well as model predictions.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Astronomy & Astrophysics
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