Radio signals coming from deep space detected in Canada
Radio signals coming from deep space detected in Canada
10 January, 2019, 04:56
While scientists said that studyingfast radio bursts is challenging because they're rarely spotted and "mostly one-offs", the repeating burst was one of a total of 13 bursts detected during a pre-commissioning run in the summer of 2018.
The CHIME team's results - published January 9 in two papersin Nature and presented the same day at the American Astronomical Society meeting in Seattle - settled these doubts, with the majority of the 13 bursts being recorded well down to the lowest frequencies in CHIME's range.
This new repeating fast radio burst is called FRB 180814.J0422+73 and was recorded six times coming from the same location, 1.5 billion light-years away.
Astronomers have revealed details of mysterious signals emanating from a distant galaxy, picked up by a telescope in Canada. Additionally, "this second source shows burst behavior (i.e. multiple structures in the burst) that is extremely similar to the first repeating FRB and which is different from all the single FRBs", Tendulkar said.
"An FRB emitted from a merger of two neutron stars, or a neutron star and a black hole, for example, can not repeat".
One of the FRBs was repeating. Knowing that there is another suggests that there could be more out there. "And with more repeaters and more sources available for study, we may be able to understand these cosmic puzzles - where they're from and what causes them", astrophysicist Ingrid Stairstold the Independent.
This particular set of signals was registered by the CHIME observatory, located in British Columbia's Okanagan Valley, which consists of four 100-metre-long, semi-cylindrical antennas that are able to scan the entire northern sky each day.
While most FRBs have been spotted at wavelengths of a few centimetres, the latest FRBs were detected at wavelengths of almost a metre, which opens up new lines of inquiry, according to the CHIME team.
At distances of billions of light years it's obviously very hard to test any of these theories, but detecting more FRBs, especially those that have a habit of repeating, could bring us closer to an explanation. "We haven't solved the problem, but it's several more pieces in the puzzle".
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