Researchers At ARIES Discovered The Most Distant Gamma-ray Emitting Galaxy

• 13 Apr 2021

• Scientists from the Aryabhatta Research Institute of observational sciencES (ARIES), Nainital in collaboration with researchers from other institutions, have discovered the most distant gamma-ray emitting Narrow-Line Seyfert 1 (NLS1) galaxy known to date.
• The researchers have been studying around 25,000 Active Galactic Nuclei (AGN) from the Sloan Digital Sky Survey (SDSS) and were able to devise a new method to find high-z NLS1 galaxies till now unknown by comparing different emission lines in their spectra.
• One of the largest ground-based telescopes in the world, the 8.2 m Subaru Telescope located in Hawaii, US was used to confirm the findings.
• The researchers confirmed that the newly found farthest gamma-ray emitting NLS1 galaxy was formed when the Universe was only about 4.7 billion years old. The current age of the Universe is 13.8 billion years.