Panoramic SETI: Program Update and High-Energy Astrophysics Applications

Abstract

Optical SETI (Search for Extraterrestrial Intelligence) instruments that can explore the very fast time domain, especially with large sky coverage, offer an opportunity for new discoveries that can complement multimessenger and time domain astrophysics. The Panoramic SETI experiment (PANOSETI) aims to observe optical transients with nanosecond to second duration over a wide field-of-view ($\sim$2,500 sq.deg.) by using two assemblies of tens of telescopes to reject spurious signals by coincidence detection. Three PANOSETI telescopes, connected to a White Rabbit timing network used to synchronize clocks at the nanosecond level, have been deployed at Lick Observatory on two sites separated by a distance of 677 meters to distinguish nearby light sources (such as Cherenkov light from particle showers in the Earth's atmosphere) from astrophysical sources at large distances. In parallel to this deployment, we present results obtained during four nights of simultaneous observations with the four 12-meter VERITAS gamma-ray telescopes and two PANOSETI telescopes at the Fred Lawrence Whipple Observatory. We report PANOSETI's first detection of astrophysical gamma rays, comprising three events with energies in the range between $\sim$15 TeV and $\sim$50 TeV. These were emitted by the Crab Nebula, and identified as gamma rays using joint VERITAS observations.

arXiv comment9 pages, 5 figures, SPIE Astronomical Telescopes + Instrumentation conference, 2022, Montréal, Québec, Canada

References in corpus (6)

• VERITAS: the Very Energetic Radiation Imaging Telescope Array System
• A Search for Laser Emission with Megawatt Thresholds from 5600 FGKM Stars
• A Search for Brief Optical Flashes Associated with the SETI Target KIC 8462852
• Panoramic optical and near-infrared SETI instrument: overall specifications and science program
• Panoramic optical and near-infrared SETI instrument: prototype design and testing
• Panoramic optical and near-infrared SETI instrument: optical and structural design concepts

Cited by in corpus (5)

• A VERITAS/Breakthrough Listen Search for Optical Technosignatures
• PeV Gamma-ray Astronomy With Panoramic Optical SETI Telescopes
• How to detect gamma-rays from ground: an introduction to the detection concepts
• Undetected past contacts with technological species: implications for technosignature science
• The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence