1. Search for Neutrino Emission from the Cygnus Bubble Based on LHAASO γ -Ray Observations.
- Author
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Li, Wenlian, Huang, Tian-Qi, Xu, Donglian, and He, Huihai
- Subjects
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NEUTRINO detectors , *MOLECULAR clouds , *NEUTRINOS , *GALACTIC cosmic rays , *CONFIDENCE intervals , *NEUTRINO astrophysics - Abstract
The Cygnus region, which contains massive molecular and atomic clouds and young stars, is a promising Galactic neutrino source candidate. Cosmic-ray transport in the region can produce neutrinos and γ -rays. Recently, the Large High Altitude Air Shower Observatory (LHAASO) detected an ultrahigh-energy γ -ray bubble (Cygnus Bubble) in this region. Using publicly available track events detected by the IceCube Neutrino Observatory in 7 yr of full detector operation, we conduct searches for correlated neutrino signals from the Cygnus Bubble with neutrino emission templates based on LHAASO γ -ray observations. No significant signals were found for any employed templates. With the 7 TeV γ -ray flux template, we set a flux upper limit of 90% confidence level for the neutrino emission from the Cygnus Bubble to be 5.7 × 10−13 TeV−1 cm−2 s−1 at 5 TeV. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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