Sensitivity of the Cherenkov Telescope Array to the gamma-ray emission from neutrino sources detected by IceCube
: Sergijenko, Olga; Brown, Anthony M.; Fiorillo, Damiano; Rosales de León, Alberto; Satalecka, Konstancja; Tung, Chun Fai; Taboada, Ignacio; for the CTA Consortium and FIRESONG Team
: Saito, Takayuki; Okumura, Kimihiro
: International Cosmic Ray Conference
: 2024
POS Proceedings of Science
: 38th International Cosmic Ray Conference
: 1531
: 444
: 1824-8039
DOI: https://doi.org/10.22323/1.444.1531
: https://doi.org/10.22323/1.444.1531
: https://research.utu.fi/converis/portal/detail/Publication/478136379
Gamma-ray observations of the astrophysical neutrino sources are fundamentally important for understanding the underlying neutrino production mechanism. We investigate the Cherenkov Telescope Array (CTA) ability to detect the very-high-energy (VHE) gamma-ray counterparts to the neutrino-emitting Active Galaxies. The CTA performance under different configurations and array layouts is computed based on the neutrino and gamma-ray simulations of steady and transient types of sources, assuming that the neutrino events are detected with the IceCube neutrino telescope. The CTA detection probability is calculated for both CTA sites taking into account the visibility constraints. We find that, under optimal observing conditions, CTA could observe the VHE gamma-ray emission from at least 3 neutrino events per year.
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We gratefully acknowledge financial support from the agencies and organizations listed here: www.cta-observatory.org/consortium_acknowledgments. This research made use of ctools, a community-developed analysis package for Imaging Air Cherenkov Telescope data. ctools is based on GammaLib, a community-developed toolbox for the scientific analysis of astronomical gamma-ray data.
