![The study of optical properties of super-massive black-hole](https://www.gkseries.com/blog/wp-content/uploads/thumbs_dir/black-hole-orh8x6p6xv74ticn7gz5qzv52k5yq3b4232hddmie8.jpg)
Through 153 nights, 17 scientists from 9 countries in Europe and Asia including researchers from Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital took 2263 image frames and observed the changes in a very high energy gamma-ray emitting blazar ‘1ES 0806+524’ using seven ...
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