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Polarized emissions from an Extragalactic Black hole
December 17 , 2023
215 days
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- IIT Guwahati and ISRO researchers have uncovered X-ray polarisation in extragalactic black hole source.
- It’s for the first time that the researchers have detected polarised emissions from a black hole source that exists beyond the Milky Way through a technique called X-Ray polarimetry.
- X-Ray polarisation reveals the pathway to decipher the accreting nature of black hole sources.
- This is a unique observational technique to identify where radiation comes from near black holes.
- LMC X-3 emits X-rays that are 10,000 times more powerful than those from the Sun.
- When these X-rays interact with the material around black holes, specifically when they scatter, it changes the polarisation characteristics, i.e. degree and angle.
- The Large Magellanic Cloud X-3 (LMC X3) is a binary star system consisting of a black hole and a “normal” star that is much hotter, bigger, and more massive than the Sun.
- Located in a satellite galaxy of the Milky Way, around 200,000 light years away from Earth.
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