FAST and MeerKAT Team Up for Deeper Milky Way Insights
Chinese and international scientists have expanded the boundaries of Galactic research. Using China’s Five-hundred-metre Aperture Spherical Radio Telescope, FAST and MeerKAT radio telescope from South Africa, they carried out high-precision observations of the Milky Way’s globular clusters.
This marks a major step forward in astronomical collaboration between the two countries. The project, led by Tsinghua University, used the strengths of both telescopes to achieve a broader and more detailed view of space.
Globular Clusters and Their Significance
Globular clusters are dense collections of stars. These ancient formations, among the oldest in the Milky Way, contain millions of stars, including pulsars. Pulsars are a type of neutron star known for emitting regular bursts of electromagnetic energy. These bursts offer vital clues about interstellar matter and magnetic fields.
FAST, located in the Northern Hemisphere, is excellent at detecting weak signals from distant pulsars. In contrast, MeerKAT’s 64 antennas in the Southern Hemisphere scan wider sections of the sky. The combination allowed astronomers to observe a significantly larger number of pulsars than before.
Key Findings from the Joint Effort
This international collaboration resulted in the measurement of polarisation rotation in 43 pulsars across eight globular clusters. These results help determine the strength of the Milky Way’s magnetic field.
Interestingly, seven of the studied clusters showed no signs of ionised gas. Scientists refer to these as part of a “dust-free realm” among ancient space formations. The absence of electron dust raises new questions about the evolution of globular clusters.
Researchers now believe that smaller objects within these clusters, such as white dwarfs and neutron stars, might be releasing enough energy to clear out the dust created by other stars. This could explain their unusually clean state.
Looking Ahead to Future Discoveries
This partnership is only the beginning. Scientists from both sides are planning further research into pulsar mutations and interstellar turbulence. They are also open to studying signals that might come from extraterrestrial life.
Combining tools from both hemispheres has not only improved data collection but also opened the door for even greater cooperation in the future.
with inputs from Reuters
