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Indian astronomers, utilizing the Devasthal Optical Telescope (DOT), have successfully detected and precisely measured the mass of an Intermediate-Mass Black Hole (IMBH) in a faint galaxy approximately 4.3 million light-years away — a significant step for India in the field of observational astrophysics.
Definition: IMBHs are mid-sized black holes with masses ranging from 100 to 100,000 times that of the Sun. They occupy the mass range between stellar-mass black holes and supermassive black holes.
Key Characteristics:
Mass of this IMBH: ~22,000 times the mass of the Sun.
Orbital Behavior: Surrounding gas clouds orbit at a distance of about 2.25 billion kilometers (~15 times the Earth-Sun distance).
Feeding Rate: Consuming matter at only 6% of its Eddington limit (the theoretical maximum rate of accretion).
Detection: IMBHs are extremely faint and hard to spot unless they are actively accreting matter, which produces detectable radiation signals (primarily X-rays and optical emissions).
Location:
Situated at Devasthal, near Nainital, Uttarakhand, India.
Geographical Coordinates: ~29.36° N latitude, 79.68° E longitude.
Altitude: Approximately 2,450 meters above sea level — providing excellent sky transparency and low atmospheric interference.
Telescope Features:
Diameter: 3.6 meters — the largest optical telescope in India.
Commissioned: 2016.
Managed by: Aryabhatta Research Institute of Observational Sciences (ARIES), an autonomous institute under the Department of Science and Technology (DST), Government of India.
Importance:
Designed for deep-sky surveys, stellar studies, and galactic exploration.
Has significantly boosted India's capacity for cutting-edge astronomical research.
Definition: A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.
Formation:
Typically formed when a massive star exhausts its nuclear fuel and collapses under its own gravity.
The core's collapse produces a singularity, and the outer layers are either expelled or drawn into the black hole.
Types of Black Holes:
Devasthal:
"Devasthal" literally means "Abode of Gods" in Sanskrit, symbolizing its pristine, elevated setting ideal for astronomical observations.
Devasthal has emerged as one of the most promising sites for optical and near-infrared astronomy in India and globally.
Astrophysical Importance of IMBHs:
They are considered the "missing link" in black hole evolution theories.
Their study helps in understanding how supermassive black holes — like the ones found at the centers of galaxies — form and grow.
Indian Contributions to Space Research:
This discovery highlights India's growing expertise in space technology, astrophysics, and deep-sky observation, placing Indian researchers firmly on the global map.
By: Rohit Garcha ProfileResourcesReport error
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