Pulsars and Neutron Stars

Pulsars, a type of rapidly rotating neutron star, stand as some of the universe's most extreme natural laboratories. Their discovery in 1967 by Jocelyn Bell Burnell and Antony Hewish, through the detection of rapidly pulsating radio signals, revolutionized our understanding of stellar remnants. These incredibly dense objects are formed from the collapsed cores of massive stars after supernova explosions. Pulsars are known to spin at astonishing rates, with some rotating up to 700 times per second. Their extreme density is also remarkable, exceeding that of atomic nuclei by a factor of 10^14. This means a single teaspoon of neutron star material would weigh billions of tons. The study of pulsars continues to provide invaluable insights into fundamental physics, including general relativity, states of matter under extreme conditions, and the evolution of stars.