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Context

Astrophysicist Raga Deepika Pucha's team discovers extensive samples of intermediate-mass black holes and active dwarf galaxies, enhancing cosmic evolution research

About Dwarf Blackholes

About Blackholes

• These are extremely dense, the gravitational attraction is so high that even light cannot escape.
• Albert Einstein first predicted the existence of black holes in 1916
• The first image ever recorded of a black hole was released in 2019
• Black holes do not die.
• They are theoretically predicted to evaporate over extremely long-time scales.
• Hawking predicted that black holes could radiate away energy.
• Black holes are not wormholes which can be thought of as tunnels that connect two separate points in space and time.
• Dwarf blackholes are small galaxies which typically contain just a few billion stars different from larger ones which can hold hundreds of billions.
• They are the most abundant but difficult to detect type of galaxy in the universe.
• They are difficult to detect because of
• low luminosity
• low mass
• smaller size
• They are most commonly found in galaxy clusters.
• Our Milky Way galaxy is orbited by more than 20 dwarf galaxies.
• Because most of them come from galaxy collisions, many dwarf galaxies are grouped into irregular shapes.
• However, some dwarf galaxies have spiral arms or look like mini-elliptical galaxies.
• The closest dwarf galaxy to Earth is the Canis Major Dwarf Galaxy.
• The Andromeda Galaxy (M31) is the closest major galaxy to the Milky Way.
• The nearest known black hole to Earth is Gaia BH1

Sources:

TOI