Decade-long study of blazar OJ 287 offers fresh clues to giant binary black hole system

October 6, 2026 3:31 PM

Decade-long study of blazar OJ 287 offers fresh clues to giant binary black hole system

An international team led by scientists at the Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, has tracked changes in the brightness and colour of the blazar OJ 287 over a decade, offering fresh insights into its powerful emissions and central binary black hole system. The study involved 106 scientists from 48 research institutions and universities across 18 countries. Using two dozen telescopes, the researchers observed the object from 2015 to 2025, producing what th...

Scientists discover faster rotation in Sun’s upper atmosphere, challenging classical physics

July 30, 2026 6:42 PM

Scientists discover faster rotation in Sun’s upper atmosphere, challenging classical physics

Scientists have discovered that the Sun's upper atmosphere rotates significantly faster than its visible surface, with the rotation speed increasing at greater heights above the solar surface, challenging long-held expectations based on classical physics. The findings, published in the journal Astronomy & Astrophysics Letters, are expected to improve understanding of the Sun's behaviour and help refine models of solar activity and space weather, which can affect satellites, communication sy...