Cosmic X-rays reveal an indubitable signature of black holes

(Tata Institute of Fundamental Research) A black hole is an exotic cosmic object, from within which nothing, not even light, can escape. Definitive proof of the existence of such objects is a holy grail of physics and astronomy. An international team of astrophysicists, consisting of Mr. Srimanta Banerjee, Professor Marat Gilfanov, Professor Sudip Bhattacharyya and Professor Rashid Sunyaev, has found by far the strongest steady signature of stellar-mass black holes to date, from the cosmic X-ray...