Chinese scientists discover highest-energy gamma-ray spectral line
China DailyXinhua | Updated: 2024-07-27 00:15 This schematic diagram provided by the Institute of High Energy Physics under the Chinese Academy of Sciences shows the brightest gamma-ray burst ever observed, coded GRB 221009A. BEIJING -- Chinese scientists have identified a gamma-ray spectral line with energy levels peaking at 37 million electron volts, the highest-energy gamma-ray spectral line ever observed from cosmic celestial bodies. These include China's first X-ray astronomy satellite, Insight-HXMT; the GECAM-C, an all-sky gamma-ray monitor dedicated to GRBs; and the Large High Altitude Air Shower Observatory, which works in the very high energy gamma-ray band. During the study, the research team jointly employed data from the GECAM-C space telescope and the Fermi Gamma-ray space telescope to conduct a detailed spectral analysis and search for the spectral lines of GRB 221009A.
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