AI Insight
Astronomers using the Parkes radio telescope detected three rotational glitches in pulsar PSR J1637-4642 over 15 years of observation, marking the first glitches observed in this young neutron star since its discovery. One glitch was particularly significant, altering the pulsar's rotation rate by approximately 3 parts per million. These observations are notable because the pulsar had previously been considered "quiet" with no glitch activity.
Why it matters
This discovery helps astronomers better understand the internal structure and dynamics of neutron stars, as glitches provide insights into the superfluid components within these extreme objects. The findings challenge previous assumptions about which pulsars exhibit glitch behavior and may refine models of neutron star evolution and rotation.
Understand the Science
Using more than 15 years of observations from the Parkes radio telescope, astronomers detected three rotational glitches in the pulsar PSR J1637−4642—a young neutron star that had shown no signs of glitches since its discovery. The three glitches included one that changed its rotation rate by nearly 3 parts per million. Their paper was posted to the arXiv preprint server on Aug. 20. It has been accepted for publication in the Astrophysical Journal Letters.
Source: 'Quiet' pulsar suddenly reveals three glitches in 15 years of observations