Gravitational waves from giant black-hole collisions reveal long-sought 'ringing'
In a groundbreaking revelation, scientists have uncovered evidence of the long-sought vibrations produced by the L argest black-hole merger ever detected . The colossal collision, seen on May 21, 2019, appeared to create a black hole 150 times the mass of the Sun, challenging established theories. The latest findings bring forth a new frontier in understanding the universe, providing a stringent test for Albert Einstein's general theory of relativity. The research, published in Physical Review Letters, delves into the aftermath of the massive merger. Physicist Badri Krishnan, a study co-author, expressed his astonishment at witnessing such a measurement in his lifetime. The discovery opens up a new avenue in gravitational-wave astronomy, pushing the boundaries of our comprehension. Among the routine black-hole mergers detected since 2015, the standout event, GW190521, defied expectations. Its merging frequency was so low that it entered the sensitivity range of the LIGO and Virgo ...