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Narrow-Line Seyfert 1 (NLS1) galaxy

Apr 16, 2021 18:01 IST

Astronomers have discovered a new active galaxy - Narrow-Line Seyfert 1 (NLS1) galaxy. It is identified as the farthest gamma-ray emitting galaxy.

In 1929, Edwin Hubble discovered that the Universe is expanding and most other galaxies are moving away from us. Light from these galaxies is shifted to longer (and this means redder) wavelengths - in other words, it is red-shifted.

Scientists from ARIES, an autonomous institute of the Department of Science & Technology (DST), GoI, in collaboration with researchers from other institutions, studied around 25,000 luminous Active galactic nuclei (AGN) for the last 20 years and found a unique object that emits high-energy gamma rays located at a high redshift (more than 1).

The scientists used one of the largest ground-based telescopes in the world, the 8.2 m Subaru Telescope located at Hawaii, USA.