Universe map shows 300,000 more galaxies | In24By7
PARIS: The known universe simply were given lots bigger. a new map of the night sky published on Tuesday charts hundreds of hundreds of previously unknown galaxies observed the use of a telescope that may detect mild assets optical instruments can't see.
The international group behind the extraordinary area survey said their discovery actually shed new mild on a number of the universe’s deepest secrets, which includes the physics of black holes and how clusters of galaxies evolve.
“this is a brand new window on the universe,” said Cyril Tasse, an astronomer on the Paris Observatory who was involved inside the venture. “whilst we noticed the primary snap shots we were like: ‘what's this?!’ It didn’t appearance some thing in any respect like what we are used to seeing.”
extra than 200 astronomers from 18 international locations had been concerned within the examine, which used radio astronomy to study a section of sky over the northern hemisphere, and discovered 300,000 previously unseen light assets idea to be remote galaxies.
Radio astronomy lets in scientists to hit upon radiation produced while big celestial items interact. The group used the Low Frequency Array (LOFAR) telescope in the Netherlands to pick up lines — or “jets” — of historic radiation produced whilst galaxies merge. those jets, formerly undetected, can increase over millions of light years.
“With radio observations we are able to hit upon radiation from the tenuous medium that exists among galaxies,” said Amanda Wilber, of the university of Hamburg. “LOFAR allows us to hit upon many extra of these resources and recognize what's powering them.”
the discovery of the new mild sources may additionally assist scientists higher understand the behaviour of one in all area’s maximum enigmatic phenomena. Black holes — that have a gravitational pull so strong that irrespective of can get away them — emit radiation after they engulf other high-mass objects which includes stars and gas clouds.
Tasse said the brand new statement method might allow astronomers to compare black holes over the years to peer how they form and increase. “if you examine an energetic black hollow, the jets [of radiation] disappear after tens of millions of years, and you won’t see them at a higher frequency [of light],” he said. “however at a lower frequency they hold to emit those jets for hundreds of tens of millions of years, so we will see a long way older electrons.”
The map created by means of the LOFAR observations, a part of which was published within the magazine Astronomy & Astrophysics, consists of data equal to ten million DVDs yet charts simply two consistent with cent of the sky.
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