AI Insight
Researchers at Universitat Autònoma de Barcelona have developed a new analytical method for calibrating dual-mirror Cherenkov telescopes using muon rings. The breakthrough addresses a 30-year-old challenge in accurately calculating how much Cherenkov light from muons reaches the telescope camera while accounting for shadows created by the secondary mirror and camera housing. This advancement provides precise calibration capabilities for telescopes at the Cherenkov Telescope Array Observatory.
Why it matters
Accurate telescope calibration is essential for reliable detection and measurement of gamma rays from cosmic sources. This improved calibration method will enhance the precision of astronomical observations at the Cherenkov Telescope Array Observatory, potentially leading to more accurate data about high-energy cosmic phenomena.
Understand the Science
Research initiated as part of a bachelor’s thesis in physics at the Universitat Autònoma de Barcelona (UAB) has culminated in a new analytical description of the muon-based calibration of dual-mirror Cherenkov telescopes. The work solves a problem that had remained open for more than 30 years because of the geometric complexity of these optical systems: determining precisely how much Cherenkov light produced by a muon reaches the camera, taking into account the shadows cast by the secondary mirror and the camera itself.
Source: Muon rings enable precise calibration of telescopes at the Cherenkov Telescope Array Observatory