The LIGO observatory made history in 2016, the year in which it has detected the gravitational waves from a pair of colliding black holes, to prove the existence of gravitational waves, a century after Einstein predicted it, and black holes. The instrument consists of twin L-shaped antenna of Hanford, Wash., and Livingston, La.
Since then, LIGO was joined in his exploration of the darkness by another antenna known as the Virgo, in Cascina, Italy. The combined LIGO-Virgo Collaboration is composed of approximately 2 000 scientists from around the world. The alphabetical list of their names and institutions takes up the first five and a half pages of the new paper.
The enigmatic collision recorded last August was one of the 56 possible gravitational wave events — most of which seem to be black hole collisions detected in the course of the observatory of the third term, which went from April until March 2019 and 2020, when the sars coronavirus pandemic of the judgment of the majority of scientific activities around the world. The collaboration is still reviewing the data in an effort to analyze and confirm.
Dr. Kalogera said that the event was exciting for several reasons. The ratio of the collision of two masses was the most extreme — nine — gravitational-wave collisions that have been observed so far. Astronomers have difficulty imagining how such unparalleled star together in a binary double star system to begin with.
“It is very hard for the formation of theories to explain,” she said.
The characteristic signal of the “chirp” is caused by the collision of objects in circles faster and faster as they approach their moment of ultimate doom — lasted about 10 seconds. “Because of the favorable circumstance of having observed such a strong signal different from the component masses, and for about 10 seconds, we have reached the more accurate the gravitational wave to measure a black hole spin to this day,” Alessandra Buonanno, of the Albert Einstein Institute in Potsdam, Germany, said in a press release issued by the institute arms at Hanover, Germany.
A black hole’s spin contains important information about the birth and evolution of the black hole, Dr. Buonanno noted. In this case, it was revealed that the black hole was spinning, “rather slowly,” less than one-tenth the rate allowed by the constraints of the Einstein theory.
No one was in the immediate future, of explanation or of a candidate for this type of entity could fill this huge gap, “a shortage”, Dr. Kalogera called, except to say that the calculations were robust.