FAST RADIO BOOMS PERSPECTIVE ASTRONOMY.docx

May 25, 2017 | Autor: Suresh Kumar.s | Categoria: Astrophysics, Fast Radio Bursts
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PERSPECTIVE ASTRONOMY
A fast radio boom
ARTICLE
Victoria M. KaspiScience 09 Dec 2016:
Vol. 354, Issue 6317, pp. 1230-123
ELETTER
SURESH KUMAR.S
ARTICLE Summary
The mystery of the fast radio bursts (FRBs) continues to deepen. First reported in 2007 (1), FRBs are a few-millisecond-duration flashes of radio waves that appear to be coming from far outside our Milky Way galaxy, possibly from cosmological distances. Astronomers estimate, from the nearly two dozen FRBs seen thus far, that these events occur several thousands of times per day across the whole sky, implying that the phenomenon is surprisingly common in the universe. Of those published, only one has been seen to repeat (2). Although there are presently more published theories on the physical nature of FRBs than there are published sources, the origin of FRBs is still a curious cosmic conundrum. On page 1249 of this issue, Ravi et al. (3) report on the brightest FRB yet detected, FRB 150807, and on its utility for placing constraints on properties of the intergalactic medium. Using the Parkes radio telescope in Australia, the team observed an "exceptionally intense" FRB, weighing in at a booming 120 janskys [the unit of 1 jansky, a favorite of radio astronomers, honors American Karl Jansky (1905–1950), one of the fathers of the field, and amounts to 10 26 watts per square meter per hertz of bandwidth].
Eletter
RE: Fast Radio Boom
Suresh Kumar.S, Chief Scientist [rt],CSIR
(27 December 2016)
The event horizon of a blackhole is an ultra high energy zone where matter interacts strongly with radiation,possibly,as a blackhole gobbles up another star or blackhole. The Boltzman function for particle energy distribution would be revealing an inversion of conventional profile,with a predominant density of high energy domain,as compared to lower energy ones. This would hence be an ideal candidate for dark energy zone,with potential for space time expansion. The gravity waves proceeding from such zones of blackhole mergers would display echoes on that account.
The behaviour would call for the presence of ultra high energy domains close to event horizon.
(13 December 2016)
The interstellar galactic medium can emit intense radiations in the vicinity of black hole event horizon.
This would happen for binary stars gobbled up by blackhole.
The infalling material into the event horizon at relativistic velocities would make the event horizon a high or ultra high temperature area,with possibilities of being in the negative temperature domain.
The event horizon could probably be split into an inner and outer layer.
There would be dark energy like effects due to negative temperature since the particle energy distribution might feature an inversion of the conventional distribution function.
The negative temperature domain would act like a thermodynamic engine spewing out immense energies .
This would appear to emanate from the galactic medium close to the vicinity of the blackhole event horizon.
The outer layer would appear diffuse for a distant observer,due to spatial stretch out simulating dark energy effects,on account of negative temperatures close to inner layer



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