Confirm detection of gravitational waves in which space-time oscillates with black hole coalescence, realize first three-dimensional position identification by three detectors

ByPenn State

The team of the gravity wave telescope of the United States "LIGO" and the team of the gravity wave telescope "Virgo" installed in the vicinity of Pisa of Italy are jointly shaken by the black hole and space-time shakesGravity waveHas been detected.

News | Gravitational waves from a binary black hole merger observed by LIGO and Virgo | LIGO Lab | Caltech
https://www.ligo.caltech.edu/news/ligo20170927

This detection is the first detection since Virgo started operation, and it is the fourth gravitational wave detection in the history of observation. The gravitational waves were observed at 10:30:43 AM on August 14, 2017 at the Coordinated Universal Time, and the two detectors of LIGO and one detector of Virgo are almost at the same time We are observing "shaking". This observation is named "GW 170814" based on observation date, already(PDF)paperHad been announced.

This gravitational wave occurred when two black holes having 31 times the mass of the sun and 25 times the mass of the sun were merged at 1.8 billion light years away from the earth. In other words, mankind could grasp the union of black holes that occurred 1.8 billion years ago through gravity waves. The black hole after coalescence is 53 times the mass of the sun, and it is thought that the mass of the remaining three suns is emitted as the energy of the gravitational wave.

Detection of gravitational waves occurs at 9:51 on September 14, 2015 at Eastern time in the USAFirst observationWe have succeeded in this event, it will be the fourth observation this time. The breakthrough in this detection is that observations were also made in Italy's Virgo far away from LIGO in the United States, making it possible to narrow down the generation points of gravitational waves with higher accuracy than before Yes. According to the research team, it has succeeded in narrowing the area where the black hole coalesced to one tenth of the conventional by the detection of three units.

In the following article, I will explain in detail about the gravity waves what they are and what they are.

Movie 'Gravitational Waves Explained' that understands 'What is gravitational wave' in about 3 minutes - GIGAZINE


He is a spokesperson for LIGO Science Collaboration (LSC) organized by LIGO researchers and a senior scientific researcher at the Massachusetts Institute of Technology (MIT)David Shoemaker"This is only the starting point for the observation using the network that Virgo and LIGO's collaborative system enables, in the next continuous observation planned for the fall of 2018, it is only once a week , We can expect gravity waves to be observed more frequently. "