Speaker
Description
The POEMMA-Balloon with Radio (PBR) is a Ultra Long Duration Balloon payload scheduled for launch in Spring 2027 from Wanaka, New Zealand. It will circle over the Southern Ocean for a mission duration as long as 50 days, serving as a precursor to the dual satellite mission, Probe of Extreme Multi-Messenger Astrophysics (POEMMA). The PBR mission represents a significant step towards establishing a space-based multi-messenger observatory.
Observations from space will enhance the statistics of the highest-energy cosmic rays and complement ground-based observatories by enabling simultaneous observations of both hemispheres with a single instrument. Additionally, POEMMA will facilitate the measurement of Very-High-Energy Neutrinos (VHENs) following multi-messenger alerts of astrophysical transient events, such as gamma-ray bursts.
PBR is an adaptation of the POEMMA mission, featuring three primary science goals:
- Observe Ultra-High-Energy Cosmic Rays (UHECRs) via the fluorescence technique from suborbital space.
- Observe horizontal high-altitude air showers (HAHAs) with energies exceeding the cosmic ray knee (E > 3 PeV) using optical and radio detection for the first time.
- Follow astrophysical event alerts in the search for VHENs.
This contribution provides an overview of the PBR payload and discusses the expected performance of its various detectors.
| Collaboration(s) | JEM-EUSO |
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