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Cygnus X-1
February 9 , 2024
161 days
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- Astro Sat measured the X-ray polarisation of the Cygnus X-1 black hole system from data collected over the last eight years of operation.
- Astro Sat is the India’s first, dedicated multi-wavelength astronomy mission.
- Discovered over four decades ago, Cygnus X-1 is one of the first confirmed black hole systems in our galaxy.
- It is located at a distance of 400 million times the distance between the Sun and Earth.
- The black hole in Cygnus X-1 is 20 times heavier than the Sun, and has a companion - a heavy supergiant star (40 times more massive than the Sun) in a binary system.
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