Sensitivity of the Cherenkov Telescope Array to emission from the gamma-ray counterparts of neutrino events

Summary, in English

We investigate the possibility of detection of the VHE gamma-ray counterparts to the neutrino astrophysical sources within the Neutrino Target of Opportunity (NToO) program of CTA using the populations simulated by the FIRESONG software to resemble the diffuse astrophysical neutrino flux measured by IceCube. We derive the detection probability for different zenith angles and geomagnetic field configurations. The difference in detectability of sources between CTA-North and CTA-South for the average geomagnetic field is not substantial. We investigate the effect of a higher night-sky background and the preliminary CTA Alpha layout on the detection probability. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

• Author: O. Sergijenko; Colin Carlile; Dainis Dravins; A. Zmija
• Department/s: Lund Observatory - Has been reorganised; Astrophysics
• Publishing year: 2022
• Language: English
• Publication/Series: Proceedings of Science : 37th International Cosmic Ray Conference (ICRC 2021)
• Volume: 395
• Links: https://pos.sissa.it/395/975/pdf
• Document type: Conference paper
• Topic: Astronomy, Astrophysics and Cosmology
• Keywords: Cosmic rays; Cosmology; Geomagnetism; Neutrons; Particle detectors; Astrophysical sources; Cherenkov telescope arrays; Detectability; Detection probabilities; Gamma-rays; Geomagnetic fields; Ice cubes; Neutrino fluxes; Target of opportunities; Zenith angle; Gamma rays
• Status: Published