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Indian astronomers detect flare from supermassive black hole

By TIOL News Service

BENGALURU, FEB 13, 2021: A team of Indian astronomers have reported one of the strongest flares from a feeding supermassive black hole or blazar called BL Lacertae that lies 10 million light-years away, said the Ministry of Science and Technology on Saturday.

"Analysis of the flare from this blazar - one of the oldest astronomical objects - can help trace the mass of the black hole and the source of this emission. Such analysis can provide a lead to probe into mysteries and trace events at different stages of evolution of the universe," it said.

A team of astronomers led by Mr Alok Chandra Gupta from the Aryabhatta Research Institute of Observational Sciences (ARIES), has been following the blazar since October, 2020 as part of an international observational campaign.

BL Lacertae is among the 50 most prominent blazars that can be observed with the help of a relatively small telescope. The team detected the exceptionally high flare on January 16 with the help of the Sampurnanand Telescope (ST) and the 1.3-m Devasthal Fast Optical Telescopes located in Nainital, Uttarakhand.

The data collected from the observed flare will help with the calculation of the black hole's mass, size of emission region, and mechanism of emission from one of the oldest astronomical objects known, hence opening a door to the origin and evolution of the universe.


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