Speaker
Description
The identification of gamma rays in coincidence with high-energy neutrinos has a fundamental importance in the multimessenger astronomy. This type of observations is essential for constraining the source localization, determining the source type and understanding the emission mechanisms. We investigate the Cherenkov Telescope Array Observatory (CTAO) prospects for detecting the very-high-energy (VHE) gamma-ray counterparts to neutrino-emitting extragalactic sources. The performance of CTAO under different configurations (including the so-called "Alpha" - the CTAO configuration upon the completion of its first construction phase, and "Omega" - the ultimate CTAO arrays configuration) is computed based on neutrino and gamma-ray simulations of steady sources and of flaring blazars, assuming that the neutrino events are detected with the IceCube neutrino telescope. The detection probability for CTAO is calculated for both the North and South sites, taking into account visibility constraints. We find that, under optimal observing conditions, within 30 minutes of observation, CTAO could detect the VHE gamma-ray emission associated with 2 to 3 neutrino events per year. We investigate the detectability of the blazars given either 1 or 5 hours CTAO observation windows.
| Collaboration(s) | CTAO |
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