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Sensitivity of the Cherenkov Telescope Array to the gamma-ray emission from neutrino sources detected by IceCube
Olga Sergijenko, Saptashwa Bhattacharyya, Judit Pérez Romero, Samo Stanič, Veronika Vodeb, Serguei Vorobiov, Danilo Zavrtanik, Marko Zavrtanik, Miha Živec, 2023, published scientific conference contribution

Abstract: 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.
Keywords: Cherenkov Telescope Array, IceCube neutrino telescope, neutrinos, neutrino sources
Published in RUNG: 26.09.2023; Views: 657; Downloads: 6
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Experimental bounds on sterile-active neutrino mixing angles
Mihael Petač, 2015, master's thesis

Abstract: Despite the success of the Standard Model in the last few decades, we know it is not complete. There is strong motivation for assuming the existence of additional heavy neutral leptons, which can account for active neutrino masses and possibly also have cosmological implications. In this work I consider the Standard Model with two neutral lepton singlets (sterile neutrinos) with degenerated masses in the range 20MeV - 2GeV. The constraints on the active-sterile neutrino mixing angles are evaluated based on recent neutrino oscillations data. Using these constraints the bounds from accelerator experiments are reanalyzed for the case of the considered model. Finally, the results are compared with cosmological constraints coming from Big Bang nucleosynthesis and the nMSM resonant leptogenesis.
Keywords: Sterile neutrinos, Neutrino mixing, See-saw, High-Energy Physics - Phenomenology, High-Energy Physics - Experiments
Published in RUNG: 01.10.2021; Views: 1707; Downloads: 46
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Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A
Gabrijela Zaharijas, 2018, original scientific article

Keywords: neutrino astronomy, multi-messenger astronomy
Published in RUNG: 04.09.2018; Views: 3068; Downloads: 0
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Hadronic Models of the Fermi Bubbles: Future Perspectives
Lili Yang, Soebur Razzaque, 2018, original scientific article

Keywords: Fermi bubbles, hadronic model, neutrino, gamma ray
Published in RUNG: 13.04.2018; Views: 3587; Downloads: 0
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