A Search for Time-dependent Astrophysical Neutrino Emission with IceCube Data from 2012 to 2017
Name
Abbasi_2021_ApJ_911_67.pdf
Description
Published version
Size
1.89 MB
Format
Adobe PDF
Checksum (MD5)
74a74b8cb69dd7fea7e463b49e94dfab
Author(s)
Conrad, Janet
Date Issued
2021
Journal
Astrophysical Journal
Publisher
American Astronomical Society
Citation
Conrad, Janet. 2021. "A Search for Time-dependent Astrophysical Neutrino Emission with IceCube Data from 2012 to 2017." Astrophysical Journal, 911 (1).
Version
Final published version
Abstract
Abstract
High-energy neutrinos are unique messengers of the high-energy universe, tracing the processes of cosmic ray acceleration. This paper presents analyses focusing on time-dependent neutrino point-source searches. A scan of the whole sky, making no prior assumption about source candidates, is performed, looking for a space and time clustering of high-energy neutrinos in data collected by the IceCube Neutrino Observatory between 2012 and 2017. No statistically significant evidence for a time-dependent neutrino signal is found with this search during this period, as all results are consistent with the background expectation. Within this study period, the blazar 3C 279, showed strong variability, inducing a very prominent gamma-ray flare observed in 2015 June. This event motivated a dedicated study of the blazar, which consists of searching for a time-dependent neutrino signal correlated with the gamma-ray emission. No evidence for a time-dependent signal is found. Hence, an upper limit on the neutrino fluence is derived, allowing us to constrain a hadronic emission model.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.3847/1538-4357/ABE7E6
