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Journal article
A Search for Neutrino Point-source Populations in 7 yr of IceCube Data with Neutrino-count Statistics
The Astrophysical journal, v 893(2), p102
2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The presence of a population of point sources in a data set modifies the underlying neutrino-count statistics from the Poisson distribution. This deviation can be exactly quantified using the non-Poissonian template fitting technique, and in this work we present the first application of this approach to the IceCube high-energy neutrino data set. Using this method, we search in 7 yr of IceCube data for point-source populations correlated with the disk of the Milky Way, the Fermi bubbles, the Schlegel, Finkbeiner, and Davis dust map, or with the isotropic extragalactic sky. No evidence for such a population is found in the data using this technique, and in the absence of a signal, we establish constraints on population models with source-count distribution functions that can be described by a power law with a single break. The derived limits can be interpreted in the context of many possible source classes. In order to enhance the flexibility of the results, we publish the full posterior from our analysis, which can be used to establish limits on specific population models that would contribute to the observed IceCube neutrino flux.
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Details
- Title
- A Search for Neutrino Point-source Populations in 7 yr of IceCube Data with Neutrino-count Statistics
- Creators
- Maryon Ahrens - Oskar Klein-centrum för kosmopartikelfysik (OKC)Christian Bohm - Oskar Klein-centrum för kosmopartikelfysik (OKC)Kunal Deoskar - Oskar Klein-centrum för kosmopartikelfysik (OKC)Chad Finley - Oskar Klein-centrum för kosmopartikelfysik (OKC)Klas Hultqvist - Oskar Klein-centrum för kosmopartikelfysik (OKC)Erin O'Sullivan - Oskar Klein-centrum för kosmopartikelfysik (OKC)Christian Walck - Oskar Klein-centrum för kosmopartikelfysik (OKC)IceCube Collaboration
- Publication Details
- The Astrophysical journal, v 893(2), p102
- Publisher
- Institute of Physics (IOP)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000570310600001
- Scopus ID
- 2-s2.0-85085083425
- Other Identifier
- 991019168737904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics