The Indian researchers discovered a rare and farthest gamma-ray emitting galaxy.
This newly found galaxy was named as NLS1 (Narrow-Line Seyfert 1) galaxy.
These galaxies are classified as AGN or Active Galactic Nuclei.
Compared to normal galaxies, these active galaxies can emit up to thousands of times of energy.
The emissions of active galaxies are non-stellar (non-thermal) that are observed in the form of microwave, radio, infrared, optical, X-ray, ultra-violet, and gamma-ray wavebands.
One of the largest ground-based telescopes in the world Subaru Telescope located in Hawaii in US, was used for this.
It was formed when the Universe was only about 4.7 billion years old.
The current age of the Universe is 13.8 billion years.
The Scientists from the Aryabhatta Research Institute of observational sciencES (ARIES), Nainital have found this.
It is an autonomous institute of the Department of Science & Technology (DST), Government of India.
Redshift
Since Edwin Hubble in 1929 announced that the Universe is expanding, it was noted that the galaxies are moving away from us.
The light, in form of wavelengths, from these receding galaxies is measured as redshift.
This means farther the galaxies, the redder wavelengths of light and a larger redshift value.
Such galaxies are classified as redshifted galaxies.