SPACE This very mysterious cosmic phenomenon comes from a galaxy 6 billion light years from Earth …
A transmission came from afar. For the first time, astronomers were able to identify the source of a “fast radio burst” cosmic phenomenon still very mysterious. This very brief flash of radio waves spotted by telescopes came from a galaxy 6 billion light years from Earth, according to a study published Wednesday
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The “fast radio bursts”, their nickname FRB (Fast radio burst), were highlighted in 2007 by a team of scientists conducted by Duncan Lorimer, from data collected by an observatory. In a millisecond, they emit as much energy as the Sun 10,000 years.
Aliens signals?
It is extremely difficult to detect directly. This is what the Parkes radio telescope in Australia April 18, 2015, bringing to 17 the number of FRB identified to date. The cause of the radio flashes is unknown and assumptions are legion. “There are currently more ideas on the nature of the source of the FRB FRB there is” identified, reports Duncan Lorimer of the University of West Virginia, in the United States.
They could result from the merger of neutron stars (tiny but very dense stars, mainly composed of neutrons), says Evan Keane, senior author of the study published in the British journal Nature. Other scientists even imagine extraterrestrial signals, hypothesis that refutes it.
The equivalent of 100 billion stars the size of the Sun
A telescope located on the island Hawaii has shown that the FRB comes from an elliptical galaxy 6 billion light-years away (one light year corresponds to 9.461 billion kilometers). This galaxy is wide about 70,000 light years and its mass is equivalent to 100 billion stars the size of the Sun, says Evan Keane.
“This discovery opens the way to understanding what causes these flashes, “said Simon Johnston CSIRO, the Australian research organization that participated in the study. He hopes that in the future, “it will be possible to find several FRB week”.
The mystery of the “missing matter” in the universe
The experts also say that their research help answer the question of “missing matter” in the universe that intrigues scientists. Currently, it is accepted that the universe is 70% dark energy, 25% invisible and 5% ordinary matter dark matter (stars, planets, hydrogen).
” The space is not completely empty but its density is very low. We thought that there was the matter, but we had not been able to see before, “says Evan Keane.” As we have observed that it was delaying the signal FRB “, one can imagine that” we found missing matter “in the space between the galaxy and us.Keywords:
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