The study of black holes in Indian astrobiology aims to understand the potential habitability of regions surrounding black holes and the possibility of life existing in such extreme environments.

Subrahmanyan Chandrasekhar was an Indian-American astrophysicist who made significant contributions to the study of black holes, including the Chandrasekhar limit, which describes the maximum mass of a white dwarf star before it collapses into a black hole.

The Chandrasekhar limit is the maximum mass that a white dwarf star can have before it collapses under its own gravity and becomes a black hole. It is approximately 1.4 solar masses.

The accretion disk around a black hole is a region of intense energy and radiation. This energy can be utilized by potential life forms as a source of sustenance and growth.

The Tata Institute of Fundamental Research (TIFR) has a dedicated SETI research group that is actively involved in searching for extraterrestrial signals and studying the potential for life beyond Earth.

The primary goal of SETI research is to detect and communicate with extraterrestrial civilizations by searching for signals or patterns that may indicate the presence of intelligent life beyond Earth.

Jayant Narlikar is an Indian astrophysicist and cosmologist who has made significant contributions to astrobiology and the search for life beyond Earth. He is known for his work on the anthropic principle and the possibility of life in the universe.

The Drake equation is a probabilistic argument used to estimate the number of extraterrestrial civilizations in the Milky Way galaxy that are capable of communicating with us. It takes into account factors such as the rate of star formation, the fraction of stars with planets, and the likelihood of life arising on those planets.

The habitable zone around a star is the region where the temperature is suitable for liquid water to exist on the surface of a planet. Liquid water is essential for life as we know it, as it is the medium in which most biological processes occur.

Hawking radiation is the theoretical process by which black holes emit radiation due to quantum effects near their event horizons. This radiation is named after the physicist Stephen Hawking, who first proposed its existence.

The Indian Institute of Astrophysics (IIA) has a dedicated research group focused on black hole physics and astrobiology. They study the properties of black holes, their impact on the surrounding environment, and the potential for life in extreme environments near black holes.

The event horizon is the boundary around a black hole from which nothing, not even light, can escape due to the intense gravitational forces. It marks the point of no return for matter and energy falling towards the black hole.

Abhay Ashtekar is an Indian theoretical physicist who has made significant contributions to the theory of quantum gravity and its implications for black hole physics. He is known for his work on loop quantum gravity, which is an attempt to unify general relativity and quantum mechanics.

Black hole evaporation is the hypothetical process by which a black hole can lose mass and eventually evaporate due to the emission of Hawking radiation. This process is predicted by quantum gravity theories and is named after the physicist Stephen Hawking.

The National Centre for Radio Astrophysics (NCRA) has a dedicated research group focused on black hole astrophysics and its implications for SETI research. They study the properties of black holes, their impact on the surrounding environment, and the potential for life in extreme environments near black holes.