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ISRO's space telescope spots over 600 Gamma-Ray bursts over 8 years
11/28/2023 10:38:31 PM
NEW DELHI, Nov 28: India's AstroSat space telescope has achieved a significant milestone by detecting more than 600 Gamma-Ray Burst (GRB), each marking the death of a massive star or merging of neutron stars.
"The detection of the 600th GRB is a great demonstration of the continued undiminished performance of Cadmium Zinc Telluride Imager (CZTI) eight years after launch, and well after its design lifetime," Dipankar Bhattacharya, the principal investigator for CZTI, said.
Dubbed as mini big-bangs, GRBs are the most energetic explosions in the universe, emitting more energy in seconds than the sun will emit in its entire lifetime, Gaurav Waratkar, a Ph.D student at IIT Bombay, who leads the study of GRBs with AstroSat, told PTI.
GRBs last from a fraction of a second to several minutes, and are accompanied by the birth of a black hole.
Launched in 2015 by the Indian Space Research Organisation (ISRO), AstroSat had a design life of five years, but continues to be in good health, making observations for astronomers.
The satellite is India's first dedicated multi-wavelength space observatory, equipped with a suite of payloads for simultaneously observing celestial objects across different wavelengths, from ultraviolet to X-rays.
"We are proud of what AstroSat has accomplished. To build upon this success, multiple institutes have come together and proposed to build Daksha, a next-generation GRB space telescope that will be far better than any such satellite worldwide. Daksha will be sensitive enough to detect in just over a year what CZTI did in eight," Varun Bhalerao, associate professor at IIT-Bombay, said
The 600th GRB detection by AstroSat's CZTI detector was made on November 22, which was notified to astronomers across the world who could use it in their research on such a phenomenon and provide astronomers with invaluable data to explore the extreme conditions associated with these high-energy events.
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