UPDATED 05.28PM IST

Share This
  • UK |
  • India |
  • USA |
  • Canada |
  • Mauritius
  •    info@mayatoday.com
Deepak Dogra
  • ad
  • ad
  • ad

Scientists make 4th detection of gravitational waves

  • Scientists make 4th detection of gravitational waves

Scientists announced on Wednesday they have detected a fourth gravitational wave signal coming from the merger of two black holes.

It's the first time this phenomenon has been measured simultaneously by both the US-based LIGO and Italy-based Virgo detectors.

Originally predicted in the early 20th century by Albert Einstein, gravitational waves -- ripples in space and time -- were not detected until 2015, when the Laser Interferometer Gravitational-wave Observatory (LIGO) identified the first such signal from two merging black holes.

LIGO's two detectors, located in Livingston, Louisiana, and Hanford, Washington, later detected two other similar events,

The latest observation was made on August 14, 2017. It's the first gravitational wave signal recorded by the Virgo detector.

"Today, we are delighted to announce the first discovery made in partnership between the Virgo Gravitational-Wave Observatory and the LIGO Scientific Collaboration, the first time a gravitational-wave detection was observed by these observatories, located thousands of miles apart," said France Cordova, Director of the US National Science Foundation, which funded the LIGO project.

"This is an exciting milestone in the growing international scientific effort to unlock the extraordinary mysteries of our universe," Cordova added.

The detected gravitational waves were emitted during the final moments of the merger of two black holes with masses about 31 and 25 times the mass of the Sun and located about 1.8 billion light-years away, researchers said.

The newly produced spinning black hole has about 53 times the mass of our Sun, which means that about three solar masses were converted into gravitational-wave energy during the coalescence, they said.

A paper about the event has been accepted for publication in the journal Physical Review Letters.

The Virgo collaboration, which joined in the LIGO's observation on August 1, consists of more than 280 physicists and engineers belonging to 20 different European research groups.

 


: September 28, 2017 9:27 am
Read 321 times

RELATED STORIES

'Hot Jupiter' with deadly stratosphere stuns scientists
'Hot Jupiter' with deadly stratosphere stuns scientists

A NASA-led team of scientists has determined that WASP-18b, a "hot JupiterBSE -2.93 %" loc

Google Search adds donate button for US-based nonprofits
Google Search adds donate button for US-based nonprofits

To make it easier for people to give money to their favourite organisations this holiday season, Goo

Microsoft Office Now Available on Chromebooks
Microsoft Office Now Available on Chromebooks

Microsoft Office has arrived for Google Chromebook users through the Google Play Store and it will b

Facebook is rolling out AI tools to help prevent suicides
Facebook is rolling out AI tools to help prevent suicides

In yet another attempt to prevent suicides, Facebook is starting to roll out Artificial Intelligence

Nasa to measure space debris around International Space Station
Nasa to measure space debris around International Space Station

Nasa is set to launch a sensor that will measure space debris around the International Space Station

Google faces inquiry over location data collection
Google faces inquiry over location data collection

After Google reportedly confirmed the practice of gathering location data from Android devices even

Huawei, Edinburgh University ink pact on artificial intelligence
Huawei, Edinburgh University ink pact on artificial intelligence

Chinese technology giant Huawei and the University of Edinburgh, UK, have signed a research cooperat

Facebook ‘Local’ to bring together restaurants, bars for users
Facebook ‘Local’ to bring together restaurants, bars for users

Facebook is reportedly relaunching its “Events” stand-alone app as “Local” f

Comment*

Captcha* mayatoday
share on facebook
Advertisement
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner
  • banner