Scientists have discovered that the cosmic rays that hit the Earth from space originated from a small galaxy in the galaxy cluster M33.
The findings are published in the journal Nature.
Scientists have long theorized that the source of the powerful cosmic rays came from the very small galaxy known as M33, which has a galaxy of about 100 million stars and is located about 20 million light-years from Earth.
The research suggests that the radiation from M33 was more powerful than the one from our sun.
In this study, astronomers at the University of California, Santa Cruz and other institutions observed the brightness of the stars of M33 and found that the starlight emitted from M34 was more intense than the star light emitted from the nearby galaxy M33.
“These results have important implications for understanding the origins of cosmic rays,” said lead author of the paper, astronomer Christopher Barone of UC Santa Cruz.
“In our experiments, we saw that the light from M29 is emitted from a very distant galaxy that is much more massive than M33 but only about 100 times brighter than M34.”
“The fact that M33 has an even brighter galaxy suggests that this source of cosmic radiation may be a different type of source than the stars that hit our planet,” he added.
“We have also found that M34 is much less massive than the M33s stars, and so the source for the stars seems to be much smaller than that of M30.”
This study also suggests that there is some sort of mechanism that controls the emission of light from a galaxy from the galaxy’s supermassive black hole.
“If this mechanism is not controlling the emission from M32, we should see a much higher rate of emission from the supermassive supermassive galaxy,” said Barone.
The finding that the M34 stars were much brighter than the nearby M33 stars is consistent with previous research, Barone said.
“The finding of higher emission from our galaxy M34 and lower emission from other galaxies, such as M34, M33 or M32 could be due to the interaction between the black hole and the galaxies,” he said.
“The galaxy in which we found the higher emission is M33.”
“Our research shows that the black holes at M33 may be the source, not just of the radiation emitted from our stars, but also of the star emission,” said senior author of a paper on the research, David Smith of the University at Buffalo.
“This suggests that, in a galaxy where the black mass is relatively low, there may be something about the black, supermassive star that helps the galaxy to emit more powerful gamma rays, but at the expense of the intensity of the emitted gamma rays.”
The team, which includes UC Santa Barbara astronomer and astrophysicist Kevin Macdonald, also found evidence that the supernova star that exploded about 1.8 billion years ago in the universe may have been a black hole, not a supernova.