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DAILY NEWS ANALYSIS
18 November, 2023
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In 1969, scientists noticed an abrupt and brief increase in the rotation rate of a pulsar called as pulsar glitch.
When heavy stars die, their cores implode and if they’re heavy enough, they become black holes. Else, they collapse to form a ball of neutrons called as neutron stars.
The 1st pulsar was discovered in 1967 and 1st pulsar glitch was observed in 1969. Till date, we have spotted more than 3,000 pulsars and around 700 pulsar glitches.
Superfluids, a slippery, frictionless state which when set in motion inside a container will keep moving around.
Origin of Pulsar Glitch
The neutron star is a 20-km-wide sphere with a solid crust and a core. The crust, believed to be a lattice of iron-like nuclei, is interspersed with neutron superfluid. The core predominantly contains the superfluid, and no solid parts.
Vortices are a mass of air, water, etc. that turns around very fast and pulls things into its centre.
The phenomenon of vortices ‘sticking’ to the nuclei is called pinning.
Angular momentum is defined as the total quantity of motion possessed by the rotating moving body.
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