Astronomers record blazing spin rate of neutron star in binary system – EastMojo
An international team of astronomers has discovered the fastest spinning neutron star ever recorded, boasting a spin rate of 707 times per second, using the NICER X-ray telescope. This incredible rate surpasses the previous record held by another neutron star with a spin rate of 716 times per second, and sets a new benchmark for understanding the physics of these compact and enigmatic objects.
Neutron stars are formed after massive stars undergo a supernova explosion, collapsing under their own gravity into a dense and compact object. They have extremely powerful magnetic fields that can reach millions of times stronger than the Earth’s.
This rapidly spinning neutron star, named J0952-06, is found in a binary system with a white dwarf companion star. It exhibits a highly complex X-ray signature that allowed the astronomers to accurately measure its spin rate and observe its evolution. The researchers were intrigued by the variability in its X-ray pulses, a characteristic that revealed its incredible spinning rate.
Lead author of the study, Dr. Romain Mignani from the Italian National Institute of Astrophysics, noted the immense impact of their discovery on understanding the properties of neutron stars and their evolution, “This is a remarkable discovery and confirms that the theoretical upper limit for neutron star spin rates is significantly higher than we thought possible.”
The astronomers speculate that this ultra-fast spin rate could be attributed to the accretion of matter from its white dwarf companion. The mass transfer can dramatically boost the spin rate of the neutron star. Their study has led them to theorize that the observed variations in J0952-06’s X-ray emission could be connected to the magnetic field lines of the neutron star. They observed a dip in brightness within the pulse, suggesting a possible disruption of its magnetic field due to the extreme rate of rotation.
This new observation presents astronomers with a prime opportunity to explore the complex behavior of neutron stars in binary systems. Studying the spin rates of neutron stars allows researchers to decipher their internal structures and gravitational fields, gaining a deeper understanding of the physics governing these extraordinary objects.
“Our study offers valuable insights into the extreme environment present in these binary systems and their role in the evolution of neutron stars,” added Dr. Mignani.
This ground-breaking discovery opens doors to further investigations into the mysteries surrounding these captivating cosmic entities. As research continues, we can expect more fascinating discoveries about the secrets hidden within the cores of collapsed stars.
