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5 billion-year-old deep space signal detected
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5 billion-year-old deep space signal detected
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Topic: 5 billion-year-old deep space signal detected (Read 145 times)
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Kristin Moore
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Posts: 5137
5 billion-year-old deep space signal detected
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on:
July 08, 2015, 01:53:37 am »
5 billion-year-old deep space signal detected
Posted on Tuesday, 7 July, 2015
The signal was picked up by a team in Australia. Image Credit: CC BY-SA 3.0 Ant Schinckel
Astronomers in Australia have picked up cosmic radio waves originating from a distant galaxy.
The signal was detected by the Australian Square Kilometer Array Pathfinder (ASKAP), a new radio telescope located approximately 300km inland from Geraldton on the country's west coast.
The project is designed to locate distant galaxies beyond the detection range of most other radio telescopes, a goal made possible by ASKAP's fast survey speed and high sensitivity.
This latest signal, which originates from a galaxy known as PKS B1740-517, is over five billion years old and exhibits a cold hydrogen gas imprint, the foundation for the formation of new stars.
The find is particularly encouraging and opens up the doors to more discoveries in the future.
"We'll be hunting for galaxies that are five to eight billion years old, a timespan that represents a fifth of the universe's history," said astrophysicist Elaine Sadler. "We want to learn how much hydrogen galaxies had in this period for forming stars. Until now we've had few tools for doing that."
http://www.ibtimes.co.uk/5-billion-year-old-signal-detected-deep-space-part-australian-satellite-project-1509504
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Kristin Moore
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Re: 5 billion-year-old deep space signal detected
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July 08, 2015, 01:59:17 am »
5-billion-year-old signal detected from deep space as part of Australian satellite project
Sean Martin
By Sean Martin
July 6, 2015 12:10 BST
http://d.ibtimes.co.uk/en/full/1415214/earth-space.jpg?w=736
earth from space
‘This catch shows we’re going to bag a big haul of galaxies'(Terry Virts/Nasa/Reuters)
A satellite project based in a remote part of Australia has picked up an ancient signal that sprung from deep space.
The Commonwealth Scientific and Industrial Research Organisation (CSIRO) has established the Australian Square Kilometre Array Pathfinder (ASKAP) – a group of 36 satellite dishes located 300km inland from the west-coast town of Geraldton – which has been created to scan the skies.
The team says it has picked up cosmic radio waves originating from the galaxy PKS B1740-517 and states the signal is five billion years old.
The tiny signal is said to have a cold hydrogen gas "imprint", which is the foundation of the formation of new stars – something that it would have travelled to on its way to Earth.
Dr James Allison, leader of the work, said: "This catch shows we're going to bag a big haul of galaxies."
satellite
CSIRO's Australian SKA Pathfinder telescope(CSIRO)
What makes the ASKAP project unique is that it is "exceptionally" radio quiet – meaning it is not plagued by radio interference, which Allison says "gives us a better chance of finding something new".
Elaine Sadler, Professor of Astrophysics at the University of Sydney and a member of the ASKAP research team, says this is just the beginning of the search.
She said: "ASKAP looks at a relatively unexplored part of the radio spectrum, 700 to 1800 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.
"We'll be hunting for galaxies that are five to eight billion years old, a timespan that represents a fifth of the universe's history.
"We want to learn how much hydrogen galaxies had in this period for forming stars. Until now we've had few tools for doing that."
The findings were announced at the National Astronomy Meeting in Wales.
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Kristin Moore
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Re: 5 billion-year-old deep space signal detected
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July 08, 2015, 02:00:27 am »
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Xomon
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Re: 5 billion-year-old deep space signal detected
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July 08, 2015, 02:17:37 am »
So the signal was emitted 500 millions years b4 the Earth came into existence. That's crazy.
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Bythia Lyon
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Re: 5 billion-year-old deep space signal detected
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July 08, 2015, 02:19:50 am »
Some aliens probably sent a message to say "WE WILL COME EXTERMINATE YOU" . They did, but it was the dinosaurs. Radio message takes a long time to reach here
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She-ra, Princess of Power
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Re: 5 billion-year-old deep space signal detected
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July 08, 2015, 02:21:29 am »
Cool. I hope it lends itself to more discoveries like this!
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