Spanish Scientists Discover How “Stellar Killings” Occur
Published by The researchers deciphered the process by which a star led to one death and created a black hole with a mass more then out Sun and a diameter of just 20 kms.
The journal Nature published a study by an international group led by Christina Antonio Ugarte Postigo thon and the Institute of Astrophysics of Andalusia (Granada), in collaboration with Miguel Angel Aloy and Petar Mimica, University of Valencia.
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In it, they found a plausible explanation to the enigma which proposes “Eruption of Christmas”, an eruption of gamma rays (GRB, for its acronym in English) of more than half-hour which took place on December 25, 2010.
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This GRB101225A – according to their scientific identification – is the result of a neutron star merged with the helium core of a star giant and ancient, at a distance from Earth of about 5.5 billion years light.
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This “exotic” Star binary system went through a phase in which the first mentioned body entered the atmosphere of his giant companion and reach its kernel, merged with it. As a result, there was a large explosion – invisible from Earth – born and a new black hole.
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The tremendous amount of energy released by the burst was channeled away from the center of the star at speeds close to the light.
”Rash of Christmas”, according to researcher Aloy, is a “rare” GRB, with different properties to which were known until now. It could even be considered evidence that there is a new way to produce stellar black holes.
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”A massive star dies forming a supernova, while it was induced to death by his companion, which was falling down to the core of the star, where it induces an explosion unusual supernova – that would have gone unnoticed if not for the detection of GRB – and a very compact object, possibly a black hole,” said the specialist.
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ALOY added that the pairs of stars are normal, “but had never been seen almost live this ’stellar murder’”.
Gamma ray eruptions are flashes of ultra-intense radiation which can reach the Earth from any direction of space. They are phenomena so powerful that one of them can be so bright as all visible stars simultaneously in the sky, although only for a few seconds.
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”This eruption really surprise us all and had a multitude of anodyne properties, which motivated us to consider a wide range of possible explanations, including some related to the possibility that this would be a rare event in our own galaxy,” he explained in a release Petar Mimica.
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For his part, Antonio Ugarte noted that the fact that in one same GRB would not be a classic post luminescence and detect a thermal component hot, an explosion supernova so weak that there is no precedent for other equally and a prolonged gamma-ray activity warned “of its peculiar nature”.
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On November 30, 2011 at 6:52 pm
Very interesting and educational.
On November 30, 2011 at 9:13 pm
Scientists are truly genius. Thanks for sharing.
On December 1, 2011 at 1:27 am
Very informative article. I enjoyed reading it while looking at the visuals too.
On December 1, 2011 at 3:26 am
good, keep continue
On December 1, 2011 at 9:59 am
Informative post
On December 1, 2011 at 7:19 pm
Interesting information and beautiful pictures.