Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

We are all now connected by the Internet, like neurons in a giant brain.

 

Stephen Hawking

 

Mysterious cosmic burst of radio waves detected

RATE THIS! +9
Posted in Science on 21st Jan, 2015 05:53 PM by AlexMuller

Astronomers observed an extremely short, sharp “fast radio burst” for 2.8 milliseconds from an unknown source at an estimated distance of up to 5.5 billion light years from Earth. 24 seconds later, an email alert went out to astronomers at 12 telescopes around the world to make follow-up observations, ranging from infrared and visible light to ultraviolet light and X-ray waves.

 
However, no further signals were found, the astronomers reported Monday (Jan. 19) in an open-access paper in Monthly Notices of the Royal Astronomical Society. But when astronomers went through archival data from the Parkes Radio Telescope (famous for its role in the movie The Dish, technical corrections here) in Eastern Australia, they found that the pulse had already been detected by chance in 2007.
 
So what did they discover? “The burst could have hurled out as much energy in a few milliseconds as the Sun does in an entire day,” explains paper co-author Daniele Malesani, an astrophysicist at the Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen. “But the fact that we did not see light in other wavelengths eliminates a number of astronomical phenomena that are associated with violent events, such as gamma-ray bursts from exploding stars and supernovae, which were otherwise candidates for the burst.”
 
But the burst did leave another clue. The Parkes detection system captured the polarization of the light. Polarization is the direction in which electromagnetic waves oscillate and they can be linearly or circularly polarized. The signal from the radio wave burst was about 21 percent circularly polarized, which  suggests that there was a magnetic field in the vicinity, the astronomers suggest. “The theories are now that the radio wave burst might be linked to a very compact type of object, such as neutron stars or black holes, and the bursts could be connected to collisions or ‘star quakes.’ Now we know more about what we should be looking for,” says Malesani.

Tags: spaceuniverseastronomytelescopestarblack hole

Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Medicine on 2017-05-25 15:31:42
    Too Much Sleep Could Signal Dementia..read more
    Posted in Business on 2017-05-25 15:26:18
    India cancels plans for huge coal power stations as solar.....read more
    Posted in Games on 2017-05-25 15:09:54
    Google Artificial Intelligence defeats human Go champion..read more
    Posted in Science on 2017-05-24 15:12:39
    In 'Enormous Success,' Scientists Tie 52 Genes to Human.....read more
    Posted in Science on 2017-05-24 15:04:49
    Humans Accidentally Created a Protective Bubble Around Earth..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Nanoparticle vaccine shows potential as immunotherapy to fight.....read more
    Posted by AlexMuller
    Obesity is top cause of preventable life-years lost, study shows..read more
    Posted by AlexMuller
    Light can be utilized to control gene function..read more
    Posted by AlexMuller
    Brain stimulation restores memory during lapses, research shows..read more
    Posted by AlexMuller
    Wax worm caterpillar will eat plastic shopping bags: New.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me