Tuesday, 24 September 2013

New discovery of IISc scientists acknowledged across the globe

Reportedly an IISc scientist Banibrata Mukhopadhyay and one of his student Indrani Banerjee has successfully applied Einstein’s gravitational theory to unlock the mystery of black holes in space. Both of them worked for more than two years to get desired results.
The new discovery by them on black holes has been acknowledged by the scientific community across the globe, including professors from Harvard University.
The new study by duo throws more light on black holes and their properties, particularly the correlation between mass and spin or rotation. They have proved that mass and spin are not independent of each other but actually interdependent. They have established that mass of the star could be used to calculate the spin.
“The spin of the observed black holes is still a debatable issue — the exact value of the spin is not known. On the other hand mass can be determined more easily. Rotation of the black hole is determined by the mass and rotation of the initial star. The larger the mass of the initial star the greater it tends to have a high rotational speed and turn into swiftly spinning black holes. The smaller the mass of the initial star the slower its rotation and spin. This property shows that spin and mass are correlated. Hence if mass is known, the spin can be predicted. Eventually, only one fundamental parameter characterizes the black hole,” Banibrata explained.
What is Black hole
A black hole is a region of spacetime from which gravity prevents anything, including light, from escaping.[1] The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return. The hole is called “black” because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics

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