【新华社】人类首次“看见”的黑洞，“身份照”又上新！

Core Insights - The Event Horizon Telescope (EHT) collaboration has released new images and research findings of the supermassive black hole at the center of the M87 galaxy, published in the journal "Astronomy & Astrophysics" [2][4]. Group 1: Black Hole Characteristics - The M87 black hole is located 55 million light-years from Earth and has a mass approximately 6.5 billion times that of the Sun [4]. - The first image of the black hole was captured in 2017 and published in 2019, with subsequent observations in 2018 and 2021 [4]. Group 2: Research Findings - The latest findings reveal the evolution of polarized radiation around the M87 black hole over time, with significant changes in magnetic field distribution observed between 2017 and 2021 [4]. - The magnetic field direction changed from counterclockwise in 2017 to clockwise in 2021, indicating a continuous evolutionary state of the black hole and its surrounding environment [4]. Group 3: Implications for Astrophysics - The powerful jets associated with supermassive black holes like M87 play a crucial role in galaxy evolution by regulating star formation and energy distribution on a large scale [5]. - The new discoveries provide essential insights into the mechanisms behind extreme cosmic phenomena, contributing to the understanding of the universe [5]. Group 4: Technological Advancements - The EHT collaboration has enhanced observational capabilities by adding two new telescopes in 2021, significantly improving sensitivity and image clarity [5]. - Upgrades to existing telescopes have further enhanced data quality, facilitating ongoing research in astrophysics [5].