The mystery of the broken ‘bone’ in the Milky Way galaxy has finally been solved, revealing a fascinating cosmic hit-and-run incident. The culprit behind the fracture in the massive filament known as the Snake has been identified as a radio pulsar that tore through the filament at an astonishing velocity of up to 1,000 kilometers per second.
Pulsars, which are the remnants of massive stars that have exploded in supernovae, can receive a powerful kick during the supernova explosion, propelling them across the galaxy at high speeds. This phenomenon, known as a natal kick, can result in pulsars traveling at incredible velocities, as seen in the case of the pulsar that fractured the Snake filament.
The impact of the pulsar on the filament was so significant that it caused the magnetic field of the filament to warp, resulting in enhanced radio emission and accelerated particles that generated X-rays. Observations using the Chandra X-ray Observatory and the MeerKAT radio telescope provided valuable insights into this cosmic collision.
While the origin of the pulsar and the reason behind the second, smaller fracture in the Snake remain unknown, astronomers continue to study this fascinating phenomenon. The pulsar, located in the galactic center approximately 26,000 light-years away from Earth, has a long journey ahead of it and may eventually leave the galaxy if it continues to travel at such high speeds.
These groundbreaking findings were published in a paper in the Monthly Notices of the Royal Astronomical Society in May 2024, shedding light on the dynamic and unpredictable nature of our galaxy. As astronomers continue to unravel the mysteries of the cosmos, discoveries like this one highlight the awe-inspiring beauty and complexity of the universe.
(Source: NASA/CXC/Northwestern Univ./F. Yusef-Zadeh et al; NRF/SARAO/MeerKat)
