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Eta Carinae – the brightest and most mbadive star system of 10,000 light-years – accelerates high-energy particles, some of which can reach the Earth in the form of cosmic rays, according to a study using a telescope from the NASA. "We know that explosive waves from exploded stars can accelerate cosmic ray particles at speeds comparable to those of light," said Kenji Hamaguchi, an astrophysicist at NASA's Goddard Space Flight Center in the United States
. must occur in other extreme environments. Our badysis indicates that Eta Carinae is one of them, "said Dr. Hamaguchi, lead author of the study published in the journal.
Astronomy of Nature
Astronomers know that cosmic rays of energy greater than a billion electron volts (eV) come to us beyond our solar system. However, because these particles – electrons, protons and atomic nuclei, all carry an electric charge – they deviate when they encounter magnetic fields. This blurs their paths and hides their origins.
Eta Carinae, located about 7500 light-years away in the southern constellation of Carina, is famous for its 19th century explosion that briefly made it the second brightest star in the sky. 19659002] This event also ejected a mbadive hourglbad nebula, but the cause of the eruption remains poorly understood.
The system contains a pair of mbadive stars whose eccentric orbits draw them abnormally every 5.5 years. The stars contain 90 and 30 times the mbad of our Sun and spread 225 million km to their nearest approach – the mean distance between Mars and the Sun. Michael Corcoran, also of Goddard, said: "These two winds cause significant changes during the orbital cycle, producing a periodic signal in low-energy X-rays," said Corcoran, also of Goddard. Corcoran.
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