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Narrow-Line Seyfert 1 (NLS1) Galaxy

Part of: GS Prelims and GS-III – Space; Achievements of Indians in Sci & tech

In news

Scientists from ARIES, an autonomous institute of the Department of Science & Technology (DST) studied around 25,000 luminous Active galactic nuclei (AGN) from the Sloan Digital Sky Survey (SDSS), a major optical imaging and spectroscopic survey of astronomical objects in-operation for the last 20 years.
They found a unique object that emits high-energy gamma rays located at a high redshift.
They identified it as a gamma-ray emitting NLS1 galaxy, which is a rare entity in space.
It is identified as the farthest gamma-ray emitting galaxy that has so far been stumbled upon.
This active galaxy is called the Narrow-Line Seyfert 1 (NLS1) galaxy.
It is about 31 billion light-years away.
The new gamma-ray emitting NLS1 was formed when the Universe was only about 4.7 billion years old as compared to its current age of about 13.8 billion years

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