What's Happening?
Chinese astronomers have identified six new millisecond pulsars in two globular clusters, NGC 6517 and NGC 7078, using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). These pulsars, which are ultra-dense neutron stars with powerful magnetic
fields, complete a full rotation in less than 30 milliseconds. The discovery was facilitated by a novel data processing method that combines power spectra from multiple sessions, enhancing the signal-to-noise ratio for faint sources. This finding increases the known pulsars in NGC 6517 by 27% and in NGC 7078 by nearly 20%, contributing to the over 60 such objects discovered in 16 clusters of our galaxy as part of the GC-FANS survey.
Why It's Important?
The discovery of these pulsars is significant as it demonstrates the potential of advanced detection methods to uncover previously undetected celestial objects. Millisecond pulsars are crucial for understanding the dynamics of globular clusters and the evolution of neutron stars. The findings suggest that even well-studied clusters may harbor undiscovered objects, highlighting the need for more sensitive detection techniques. This research could lead to a better understanding of the formation and behavior of isolated millisecond pulsars, which are believed to form through gravitational collapse in dense star environments.
