PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Neutrino Astronomy & Physics (NU)
Overview of the EUSO-SPB2 Target of Opportunity program using the Cherenkov Telescope
T. Heibges
Full text: pdf
Pre-published on: August 18, 2023
Published on:
During the Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2)
mission, we planned Target of Opportunity (ToO) operations to follow up on possible sources of
≳ 10 PeV neutrinos. The original plan before flight was to point the onboard Cherenkov Telescope
(CT) to catch the source’s path on the sky just below Earth’s horizon. By using the Earth as a
tau-neutrino to tau-lepton converter, the CT would then be able to look for optical extensive air
shower signals induced by tau-lepton decays in the atmosphere. The CT had a field of view of
6.4° vertical × 12.8° horizontal. Possible neutrino source candidates include gamma ray bursts,
tidal disruption events and other bursting or flaring sources. In addition, follow-ups of binary
neutron star mergers would have been possible after the start of the O4 observation run from
LIGO-Virgo-KAGRA. The resulting exposure is modeled using the NuSpaceSim framework in
ToO mode. With the launch of the EUSO-SPB2 payload on the 13th May 2023, this summarizes
the ToO program status and preliminary data, as available.
DOI: https://doi.org/10.22323/1.444.1134
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