Author Topic: Australian astronomers find radio signal emitted before solar system was born  (Read 525 times)

MikeLigalig.com

  • FOUNDER
  • Webmaster
  • *****
  • Posts: 33284
  • Please use the share icons below
    • View Profile
    • Book Your Tickets on a Budget
Australian astronomers find radio signal emitted before solar system was born

SYDNEY - Australian scientists have captured a radio signal emitted before Earth's solar system was born, revealing a new galaxy 5 billion light-years away, local media reported on Monday.

Using a ground-breaking radio telescope in remote Western Australia, the Australian scientists identified a wisp of cosmic radio waves coming from the galaxy PKS B1740-517 in the direction of the southern constellation of "Ara."

Astronomers are salivating over the discovery because the 5- billion-year-old signal - although tiny, it clearly stood out in the ASKAP data - shows Australia's new Square Kilometer Array Pathfinder project's (ASKAP) 36 dishes will be able to detect galaxies other telescopes can't.

"This catch shows we're going to bag a big haul of galaxies," research leader James Allison of Australia's scientific body CSIRO said.

Astronomers can detect a galaxy from its hydrogen gas even when its starlight is faint or hidden by dust.

The signal detected carried the 'imprint' of cold hydrogen gas - the raw material for forming stars and plentiful in most galaxies - that it passed through on its way to earth.

The gas absorbs some of the emission, creating a tiny dip in the signal.

"At many observatories, this dip would have been hidden by background radio noise, but our site is so radio quiet it stood out clearly," Allison said.

University of Sydney Professor of Astrophysics, Elaine Sadler - a member of the research team - said ASKAP looked at relatively unexplored parts of the radio spectrum 700 to 1,800 megahertz.

"This means we'll be able to detect hydrogen gas deeper in space and, thanks to ASKAP's wide field of view, also over a much larger volume than we could before," Sadler said. "We'll be hunting for galaxies that are five to eight billion years old, a time-span that represents a fifth of the universe's history."

While many radio telescopes succumb to radio interference - unwanted signals that clutter up the spectrum - the ASKAP site is exquisitely radio quiet.

Linkback: https://tubagbohol.mikeligalig.com/index.php?topic=80437.0
John 3:16-18 ESV
For God so loved the world, that he gave his only Son (Jesus Christ), that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him. Whoever believes in him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the only Son of God.

👉 GET easy and FAST online loan at www.tala.com Philippines

Book tickets anywhere for planes, trains, boats, bus at www.12go.co

unionbank online loan application low interest, credit card, easy and fast approval

hubag bohol

  • AMBASSADOR
  • THE SOURCE
  • *****
  • Posts: 89964
  • "Better to remain silent and be thought a fool...
    • View Profile
"We'll be hunting for galaxies that are five to eight billion years old, a time-span that represents a fifth of the universe's history."

Excited jamo silang mi-announce ani. Unsa kahay nakalami aning trabahoa...

:P

Linkback: https://tubagbohol.mikeligalig.com/index.php?topic=80437.0
...than to speak out and remove all doubt." - Abraham Lincoln

Book your travel tickets anywhere in the world, go to www.12go.co

unionbank online loan application low interest, credit card, easy and fast approval

Tags: