Indian Space Scientist Find Milky Way 5 Light Years Away


It emits X-rays 10 times more than normal or more than 10 trillion sun rays and is located at a distance of 5 billion light years.

News Nation Bureau , Edited By : Nihar Saxena , Updated on: 26 Nov 2021, 01:59:40 PM

The Sun is emitting more X-rays. (Photo Credit: News Nation)

highlights

  • The Sun emits more than 10 trillion X-rays
  • There is a supermassive black hole at the center of the galaxy

New Delhi:

When it comes to astronomy, India is no less than countries like America and Russia. Indian astronomers have discovered an active galaxy. This galaxy emits X-rays 10 times more than any normal or equivalent to more than 10 trillion Suns and is located at a distance of 5 billion light years. The discovery could help investigate how particles behave under intense gravitation and the acceleration of the speed of light. It is believed that each galaxy in the universe hosts a supermassive black hole at its centre. In some galaxies the black hole is actively devouring large amounts of material and shooting a jet of plasma at nearly the speed of light towards us and these are called blazars.

This class of sources is emitted throughout the electromagnetic spectrum, a rather unusual phenomenon that requires extreme physical conditions. Therefore a study of such sources tells us about the behavior of matter in extreme gravitational fields where it is difficult for light to escape from around a black hole. Astronomers from Aryabhatta Research Institute of Observational Sciences Science and Technology, Government of India, have been monitoring one such black hole system named OJ 287 since 2015. This source shows an optical brightness increase approximately once every 12 years. The repeated optical enhancement makes OJ 287 very interesting because the flux variations in this class of sources do not show any repeating features. A release from the Ministry of Science and Technology said. In 2020 the source was very bright in the optical and X-ray bands, with X-ray flux 10 times higher than the normal (non-active phase) flux.

Astronomers led by Pankaj Kushwaha and Alok C Gupta report the source in a completely new spectral position, examining the extreme brightness shown by OJ 287 in the optical and X-ray bands. The team argued that this change of state holds clues for the researcher to discover. To understand how matter behaves in very strong gravity and how it accelerates particles to nearly the speed of light, a task that is beyond the scope of the most advanced CERN accelerators. The research, published in The Astrophysical Journal, tracked the details of optical changes in the source’s X-ray emission spectrum over time from 2017 to 2020, after the source’s second-brightest X-ray flare. This showed how the source gradually began to change its spectral behavior from mid-2018 to a new spectral position in 2020.



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First Published : 26 Nov 2021, 01:59:40 PM

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