Indian researchers have discovered three supermassive black holes from three galaxies merging together to form a triple active galactic nucleus.
About three new galaxies
- While studying a known interacting galaxy pair, NGC7733, and NGC7734, researchers detected unusual emissions from the centre of NGC7734 and a large, bright clump along the northern arm of NGC7733.
- Their investigations showed that the clump is moving with a different velocity compared to the galaxy NGC7733 itself. The scientists meant that this clump was not a part of NGC7733; rather, it was a small separate galaxy behind the arm. They named this galaxy NGC7733N.
- They used data from the Ultra-Violet Imaging Telescope (UVIT) onboard the first Indian space observatory ASTROSAT, the European integral field optical telescope called MUSE mounted on the Very Large Telescope (VLT) in Chile and infrared images from the optical telescope (IRSF) in South Africa.
- This is only the third time such an event has been observed and the findings were published as a letter in the journal Astronomy and Astrophysics in June.
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