Recently Team of Indian Astronomers have detected one of the strongest optical flares in one of the oldest astronomical objects that is supermassive black hole or blazar called BL Lacertae.

Points To Note

  • The analysis of the coming out from the blazar will help in tracing the mass of the black hole.
  • The analysis would also help in tracing the source of this emission.
  • It is significant in providing a lead to probe into mysteries and useful in tracing the events of evolution of the Universe.


They are the feeding supermassive black holes situated in the heart of distant galaxies. The blazars receive a lot of attention due to their complicated emission mechanism. They emitjets ofcharged particles. The jets travel equally at the speed of light. They are the one among the most luminous and energetic objects found in the Universe.

BL Lacertae blazar

  • It is situated 10 million light years away from the Planet Earth. It is one among the 50 most prominent blazars that can be seen with small telescope.
  • It was predicted to be experiencing flares with the help of the Whole Earth Blazar Telescope.
  • This blazar is a type of active galactic nucleus or a galaxy which has been named after its prototype, BL Lacertae.
  • They are characterized by a rapid and a large-amplitude flux variability.
  • BL Lacertae blazar also show significant optical polarization.
  • These properties of the blazar are very similar to that of variable star.
  • BL Lacertae blazar comprises of spectra which is dominated by a featureless non-thermal emission continuum.

BL Lacertae

The BL Lacertae is a highly variable and extragalactic active galactic nucleus. It was first observed and discovered by Cuno Hoffmeister in 1929. It was earlier given a designation of a variable star in the Milky Way galaxy.

Indian Astronomers detect huge Optical Flare in Astronomical Objects Indian Astronomers detect huge Optical Flare in Astronomical Objects