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Question
Which satellite played a key role in confirming the
presence of the smaller black hole orbiting a larger black hole in the galaxy OJ 287, as observed in the international study?Solution
The international study involving 32 scientists from 10 countries marked the first direct observation of a smaller black hole orbiting a larger one in the galaxy OJ 287. This groundbreaking observation was confirmed by NASA's Transiting Exoplanet Survey Satellite (TESS) and other telescopes, including NASA's Swift. TESS, which typically searches for exoplanets, detected a 12-hour burst of light on November 12, 2021, confirming the presence of the smaller black hole. This burst of brightness occurs when the smaller black hole consumes part of the accretion disk of the larger black hole, causing a temporary "yellow" jet of gas. The discovery is significant for the future detection of nano-Hertz gravitational waves, as noted by A. Gopakumar from the Tata Institute of Fundamental Research.
Most drought tolerant crop among pulses is
The yearly sequence and spatial arrangement of crops or of crops and fallow on a given area is known as
Match the following
1. Rhizobium trifoli �...
What is the in general thickness of grain bed in case of thin layer drying?
Cultivation of two or more crops simultaneously on the same land without definite row pattern or fixed ratio is called _____.
Desuckering, priming and topping terms are related to which crop?
Sorghum roots produce a bio herbicide known as-
Which of the following is not an indicator of sugarcane maturity?
Seed rate of lentil crop is ____
Which of the following is not matched correctly?