Trinity’s Sensitivity to Isotropic and Point-Source Neutrinos

Abstract

The neutrino band above 10 PeV remains one of the last multi-messenger windows to be opened, a challenge that several groups tackle. One of the proposed instruments is Trinity, a system of air-shower imaging telescopes to detect Earth-skimming neutrinos with energies from 10 6 GeV to 10 10 GeV. We present updated sensitivity calculations demonstrating Trinity's capability of not only detecting the IceCube measured diffuse astrophysical neutrino flux but doing so in an energy band that overlaps with IceCube's. Trinity will distinguish between different cutoff scenarios of the astrophysical neutrino flux, which will help identify their sources. We also discuss Trinity's sensitivity to transient sources on timescales from hours to years.

Probing New Physics at Future Tau Neutrino Telescopes

“…Trinity will deploy the imaging atmospheric Cherenkov telescope on the mountaintop with an altitude of ∼ 2 km [104][105][106][107]. One may think of Trinity as a ground analogue of POEMMA, so most of the considerations to derive neutrino events at POEMMA can apply directly to Trinity after modifying some of the experimental parameters.…”

“…A schematic diagram for the working principles of tau neutrino telescopes is given in Fig. 1, where we have chosen three representative tau neutrino telescopes GRAND [102,103], Trinity [104][105][106][107] and POEMMA [108].…”

Rapporteur ICRC 2021: Neutrinos and Muons

“…Rapporteur: Neutrinos and Muons Anna Nelles A demonstrator Cherenkov telescope for Trinity has been funded [10,11], which will look at the rim of the Earth from a mountain top for upcoming stemming from -interactions. The Cherenkov technique has the potential to bridge the energy gap between optical in air or water arrays and the radio technique.…”

“…This approach allows us to reduce the 90% confidence area of the source localization by more than 55%, depending on the combination of neutrino telescopes which is used, as shown in Fig 1. [11] with and without using the prior for a CCSN located at the Galactic Center.…”

“…Figure 1: Comparison of the confidence areas obtained by the CCSN triangulation method[11] with and without using the prior for a CCSN located at the Galactic Center.…”