由广岛大学领导的国际研究团队通过整合来自费米伽玛射线太空望远镜、野辺山45米射电望远镜和钱德拉X射线天文台的观测数据，确认银河系中的LHAASO J1912+1014u是一个能将质子加速到超过一千万亿电子伏特(PeV)的宇宙加速器[1]。这一发现有助于揭示银河系最高能量宇宙射线的起源及其对银河系的影响[1]。
研究团队通过三项关键观测得出这一结论：伽玛射线信号从超过100万亿电子伏特平滑延伸至4亿电子伏特[1]；GeV伽玛射线的空间分布与星际气体分布相吻合[1]；钱德拉X射线天文台仅检测到极为微弱的X射线信号[1]。LHAASO J1912+1014u位于天鹰座，靠近Summer Triangle中的亮星Altair，于2024年被发现[1]。该研究成果于2026年7月16日发表在《天体物理学杂志》上，由广岛大学的Tsunefumi Mizuno教授作为第一作者和通讯作者[1]。
An international research team led by Hiroshima University has identified LHAASO J1912+1014u, a cosmic accelerator within the Milky Way, as a proton PeVatron capable of accelerating protons to energies exceeding one quadrillion electron volts (10^15 eV) [1]. The discovery, published on July 16, 2026, in The Astrophysical Journal, represents a significant step toward understanding the origins of the galaxy's highest-energy cosmic rays and their impact on the Milky Way [1].
The research combined multi-wavelength observational data from three major observatories: the Fermi Gamma-ray Space Telescope (Fermi-LAT), the Nobeyama 45-Meter Radio Telescope (FUGIN), and the Chandra X-ray Observatory [1]. Three key findings support the conclusion of proton acceleration: gamma-ray signals smoothly extend from above one petaelectronvolt down to 400 megaelectronvolts, the distribution of GeV gamma rays correlates with interstellar gas distribution, and Chandra detected only very weak X-ray emission [1]. The object, first discovered in 2024, is located in the constellation Aquila near Altair, a bright star within the Summer Triangle [1]. Tsunefumi Mizuno of Hiroshima University served as the first author and corresponding author of the study [1].