Scientists Discover New Galaxy 1,000 Times Brighter Than The Milky Way
London: Scientists have discovered a distant galaxy about 10 billion years ago, or about 1,000 times brighter than the Milky Way.
These are the brightest submillimetric galaxies, which have a strong emission in the far infrared, the researchers said.
Scientists led by Anastasio Diaz-Sanches of the Universidad Politécnica de Cartagena (UPCT) in Spain using a gravitational lens that acts as a magnifying glass, which changes the size and intensity of the apparent image of the original object.
“Thanks to the gravitational lens produced by a group of galaxies between us and the source, which acts as a telescope, the galaxy appears 11 times larger and brighter than it actually is, and appears as multiple images in an arc centered on the Dense part of the group, known as an Einstein ring, “said Diaz-Sanchez.
“The advantage of this amplification is that it does not deform the spectral properties of light, which can be studied for these very distant objects as if they were much closer,” Diaz-Sanchez said.
To find this galaxy, a search for the entire sky was made by combining WISE and Planck satellite databases to identify the brightest galaxies in the sub-form.
The galaxy is notable for having a high star formation rate. The stars are formed at 1000 solar masses per year, compared to the Milky Way stars forming, at the rate of twice the solar mass per year.
“This type of object is home to the most powerful regions of known star formation in the universe,” said Susana Iglesias Groth, an astrophysicist at the Canarian Astrophysics Institute (IAC) in Spain. .
The fact that the galaxy is so bright, its light is gravitationally amplified, which allowed scientists to see their internal properties, which otherwise would not be possible with this type of distant galaxies.