Event Horizon Telescope Confirms Black Hole Shadow is ‘Real’

Context: 

‘Event Horizon Telescope’ Confirms Black hole Shadow is ‘Real’.

Event Horizon Telescope Reveals New Insights Into Black Hole

• Scientists have unveiled new details of a colossal black hole 53 million lightyears away first photographed by the earth-wide Event Horizon Telescope (EHT) in 2017. 
• The feat provided the first visual evidence that black holes exist, confirming a fundamental prediction of Einstein’s general relativity.

Key Finding By Event Horizon Telescope 

• Improved resolution & Coverage: Major Event Horizon Telescope findings include improved resolution & Coverage as compared with previous one.
• Valuable insights : into the intricate dynamics near the Event horizon.
• Bright ring & Dark Central Region: They again find a bright ring of the same size, with a dark central region and one side of the ring brighter than the other.
• Asymmetric ring structure: The finding confirmed the presence of an asymmetric ring structure consistent with Gravitational lensing.
• Stable ring formation process: The findings have reaffirmed the Stable ring formation process & other physical characteristics.

About Event Horizon Telescope

• Event Horizon Telescope is a planet-scale array of eight ground-based radio telescopes forged through international collaboration.
• Objective : It was designed to capture images of a black hole.
  • It offers scientists to research new frontiers of the Universe. 
• Technology deployed: The Event Horizon Telescope observations use a technique called very-long-baseline interferometry (VLBI) to capture the images of black holes. 

About Black Hole

• A black hole is a cosmic object with strong gravity that nothing can escape from it, not even light.
• Black Hole Formation: When a massive star runs out of fuel to fuse, blows up, leaving its core to implode under its weight to form a black hole. 
• High Gravity: NASA explains the intensity of a black hole as “20 times the sun’s mass could fit easily in a 16 km ball”. 
• Invisible to Eyes: Since no light can escape, none can bounce back. This makes the black hole invisible to our eyes and telescopes that we rely on. 
• Mass: The mass of small black holes is around 5 to 20 times the mass of the sun (solar mass); for supermassive black holes, it is millions to billions times the solar mass

News Source : The Hindu

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