Astronomers at Cornell University are utilizing a new telescope to search the night sky for fast radio bursts (FRBs), which are elusive and powerful signals from deep space. FRBs are extremely short, lasting only a few milliseconds, and their origins remain unknown. The telescope, known as the Canadian Hydrogen Intensity Mapping Experiment (CHIME), is designed like a cake pan and is located in British Columbia’s Okanagan Valley.
The CHIME telescope was originally intended to map hydrogen in the universe to help scientists understand the universe’s expansion. However, its design also makes it ideal for locating FRBs due to its large field of view and sensitivity. The telescope consists of four 100-meter-long half-pipe cylinders, which can scan the entire northern sky each day.
The CHIME team, which includes Cornell researchers, has detected 535 new FRBs in its first year of operation, between 2018 and 2019. This is a significant increase compared to the roughly 100 FRBs detected in the past decade by other telescopes.
FRBs are not only mysterious but also carry a lot of information about the universe. They can potentially provide insights into the nature of the universe’s less-understood components, such as dark matter, dark energy, and the cosmic microwave background.
The CHIME team has categorized the 535 FRBs into two types: repeating, where the burst is sporadically repeated, and non-repeating. About 18% of the detected FRBs repeated, but they appeared in all areas of the sky evenly. The non-repeating FRBs, on the other hand, were concentrated in a specific area of the sky. The reason behind this distribution pattern is still unclear and remains an open question for the researchers.
The team has also found that FRBs are more likely to occur in spiral galaxies, which tend to be relatively young and have more star formation compared to elliptical galaxies. This suggests that FRBs are likely linked to massive stars, which supports some of the leading theories about the possible sources of FRBs.
The research is still in its early stages, and much about FRBs remains unknown. However, the success of the CHIME telescope in detecting these bursts provides a promising direction for future research. Scientists hope that further study of these signals will unlock more secrets of the universe.
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