In 2007, scientists at West Virginia University identified an unusually rapid burst of radio waves from space for the first time. Since then, these rapid radio bursts, or FRBs, have remained a mystery. astronomers,
They only knew that there are FRBs Lentils Radio waves and FRBs come from places within our galaxy, the Milky Way and other galaxies.
Recently however, researchers identified an FRB that was first detected in 2019 with the world’s largest single-dish radio telescope, called FAST. It is in Guizhou province of China. The FRB was further studied using the VLA telescope in the US state of New Mexico. The FRB is in a very small galaxy, about 3 billion light-years away from Earth. Light year is the distance that light travels in one year.
Scientists believe that extreme objects may be giving off these fast radio bursts. These objects may include unusual types of stars such as neutron stars. A neutron star at the end of its life cycle is the center of a larger star that is a . explodes as supernova, The other is a magnetar, a neutron star with a very strong Magnetic Field. and another possible cause of FRB is a black hole A nearby star is eating.
Casey Law is an astronomer at the California Institute of Technology. That’s 2019. was a co-author of the recent study of frb was published in Nature, He said FRBs are quick flashes of radio energy that turn on and off for only a millisecond. They can be seen throughout the universe. Some objects generate a storm of FRBs repeatedly, and some erupt only once.
2019 FRB repeats. Weak radio signals persist between bursts, so it seems to always be “on”. majority of known FRBs, about 500 of them, do not repeat.
Astronomers believe that the FRB is described in Nature Study is only at the beginning of his life. It is still surrounded by thick material from the supernova explosion that created the neutron star. Scientists suspect that the repeating bursts come from smaller FRBs.
Di Li is the Chief Fast Telescope Scientist and is with the Chinese Academy of Sciences in Beijing. he co-wrote Nature study. He said, “We still call fast radio bursts cosmic Mystery and rightly so. ,
Although FRBs are still not fully understood, new repeating FRBs may help scientists determine the causes of radio bursts. Years ago, scientists were faced with a similar mystery with gamma-ray bursts. These events are now believed to result from the death of very massive stars, or the joining of neutron stars or magnetars to form black holes.
But researchers have much more to learn about FRBs.
“We know more and more about factWhere do the sources live, how often do they burst… However, we are still chasing the golden measure that gives us a The last Answer their reasons,” Law said.
I am Faith Pirlo.
Will Dunham wrote this article for Reuters. Faith Pirlo adapted it for learning English.
words in this story
astronomer -N. a scientist who studies the stars, planets, and objects in outer space
pulsation – N. a slight increase in the amount of electricity, light, or sound
light year – N. The distance light travels in a year, about 9.5 trillion kilometers
supernova – N. a star that has exploded, for some time strongly increases its brightness
black hole , n, a very dense region in space where the gravitational pull is so powerful that nothing, not even light, can escape
cosmic , accommodate, of or relating to the universe or outer space
fact – N. a phenomenon or interesting phenomenon that can be observed and studied and which is not easy to explain or understand
The last – adj. clear, definite and unlikely to change
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