All Blackholes Are Going to Die?

DEATH OF A BLACKHOLE

So is it true..??

In true sense it is true that some day not now every black hole is going to die .. with the die it means decompose it can be due to the fact of hawking radiations ..due to our respected astrophysicist Stephen hawking we came to know that nothing in this universe is ever lasting weather it is blackhole or galaxies

Gamma Ray bursts

gamma-ray astronomy, gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant galaxies. They are the brightest electromagnetic events known to occur in the universe.Bursts can last from ten milliseconds to several hours.After an initial flash of gamma rays, a longer-lived "afterglow" is usually emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, microwave and radio).The intense radiation of most observed GRBs is thought to be released during a supernova or hypernova as a rapidly rotating, high-mass star collapses to form a neutron star, quark star, or black hole. A subclass of GRBs (the "short" bursts) appear to originate from a different process: the merger of binary neutron stars. The cause of the precursor burst observed in some of these short events may be the development of a resonance between the crust and core of such stars as a result of the massive tidal forces experienced in the seconds leading up to their collision, causing the entire crust of the star to shatter.The sources of most GRBs are billions of light years away from Earth, implying that the explosions are both extremely energetic (a typical burst releases as much energy in a few seconds as the Sun will in its entire 10-billion-year lifetime)and extremely rare (a few per galaxy per million years[8]). All observed GRBs have originated from outside the Milky Way galaxy, although a related class of phenomena, soft gamma repeater flares, are associated with magnetars within the Milky Way. It has been hypothesized that a gamma-ray burst in the Milky Way, pointing directly towards the Earth, could cause a mass extinction event. GRBs were first detected in 1967 by the Vela satellites, which had been designed to detect covert nuclear weapons tests. Following their discovery, hundreds of theoretical models were proposed to explain these bursts, such as collisions between comets and neutron stars. Little information was available to verify these models until the 1997 detection of the first X-ray and optical afterglows and direct measurement of their redshifts using optical spectroscopy, and thus their distances and energy outputs. These discoveries, and subsequent studies of the galaxies and supernovae associated with the bursts, clarified the distance and luminosity of GRBs, definitively placing them in distant galaxies.

After how many years all the blackholes are going to vanishe up??

Now this is a very slow process .. so it will take billions of years as there is huge no of stars in our universe so there will be continuous production of the black holes as these stars will take a long time die and still there is enough star dust so that the production of the star will be ongoing for several million years ...So first all the stars start dying which it self will take millions of years there after red dwarf will govern the universe .. then the era of complete darkness will start where there will be every few starts as a red drawft or white dwarf with very low luminous intensity leading to the darkness .. there after there will be decline int no of here stars .. then the era of black holes will starts where there will be complete darkness with the blackholes sucking everything.

So what will be the reason for the pause in the formation of stars and hence blackholes ??

Here the concept of dark energy arises ...commonly we were only taught about gravitational forces .. but gravity is not the only thing .. for the year scientists believes that universe will die as a big crunch due to the gravity everything is going to merge .. but practically universe is expanding so whats the reason behind this .. it is Dark energy the energy which which keeps pushing things apart due to star formation is slowing down and there will the time where there will be no possible star dust for the formation of the stars .. leading to the dark world


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