最新观测数据揭示银河系古老天体“秘密”

Group 1 - The research conducted by Tsinghua University and international astronomers utilized the FAST and MeerKAT telescopes to perform a high-precision pulsar polarization survey of globular clusters, providing the most comprehensive measurements of magnetic field gradients and ionized gas limits to date [1] - The study observed 43 pulsars across 8 globular clusters, doubling the global sample size and creating a clearer map of the Milky Way's magnetic field [1] - The findings were published as a cover article in the journal "Science Bulletin" on May 20 [1] Group 2 - The research revealed that, apart from 47 Tucanae, other globular clusters lacked detectable ionized gas, contradicting theoretical models that predicted significant gas presence [2] - This unexpected finding suggests the existence of effective gas-clearing mechanisms within globular clusters, potentially driven by strong radiation winds from white dwarfs and young stars [2] - The results challenge existing theories of globular cluster evolution, prompting a reevaluation of current models [2]