Guwahati, Aug. 19 -- A team of researchers from the Indian Institute of Technology Guwahati in Assam, in collaboration with scientists from the U. R. Rao Satellite Centre (ISRO) and Haifa University, Israel, has decoded previously unexplained flickering X-ray signals from a black hole located nearly 28,000 light-years from Earth.

The black hole, designated GRS 1915+105, has long attracted scientific interest due to its unusual energy patterns. Using data from India's space observatory AstroSat, the team observed that the black hole's X-ray brightness alternates between bright and dim phases, each lasting several hundred seconds.

The researchers detected rapid X-ray flickers at a frequency of approximately 70 times per second (70 Hz) dur...