Preprint
EUSO-SPB2 Cherenkov Telescope: Overview and First Neutrino Constraints
ArXiv.org
Cornell University
11/14/2025
DOI: 10.48550/arxiv.2511.10944
Abstract
Earth-skimming tau neutrinos with energies above ∼ 10 PeV can convert to tau leptons that decay in the atmosphere and initiate upward-going extensive air showers that generate optical Cherenkov signals. On a curtailed NASA balloon flight in May 2023, the Cherenkov telescope (CT) on the Extreme Universe Space Observatory on a Super Pressure Balloon 2 (EUSO-SPB2) was launched and had a short flight at ∼ 30 km altitude. With some time pointing below the Earth’s limb, EUSO-SPB2 CT data allow searches for neutrino events that yield optical flashes from the forward-beamed Cherenkov light. We present an overview of the CT and provide upper limits for the diffuse astrophysical neutrino flux from flight data as a proof-of-principle demonstration. We also briefly describe how the methodology is extended to potential transient neutrino point sources.
Details
- Title: Subtitle
- EUSO-SPB2 Cherenkov Telescope: Overview and First Neutrino Constraints
- Creators
- Tobias HeibgesDiksha GargClaire GuépinJulia Burton-HeibgesJohn F KrizmanicMary Hall RenoTonia M VentersLawrence Wiencke
- Resource Type
- Preprint
- Publication Details
- ArXiv.org
- DOI
- 10.48550/arxiv.2511.10944
- ISSN
- 2331-8422
- Publisher
- Cornell University; Ithaca, New York
- Language
- English
- Date posted
- 11/14/2025
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9985033875402771
Metrics
4 Record Views