Published: Sat, January 12, 2019
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Mysterious radio signals from outer space detected

Mysterious radio signals from outer space detected

A fast radio burst lasts only a few milliseconds; due to both the very brief appearance and the inability to predict where they will happen, it has proven very hard for astronomers to study the FRBs. In regular FRBs, they emit a single spike. One such theory for 112102 is that it could be "very strongly magnetized, rapidly spinning neutron star", but it's simply too early to know for sure. That's about twice as close as the other repeater, FRB 121102. Now a Canadian research team has found a repeating signal, only the second of its kind to be discovered.

The radio telescope is housed in an observatory south of Penticton, British Columbia, Canada at the center of the Canadian Hydrogen Intensity Mapping Experiment, or CHIME, according to Digital Journal.

The other institutions with leading roles are the University of Toronto, the National Research Council of Canada, and the Perimeter Institute.

While most previous FRBs had been recorded at frequencies around 1400MHz, these new bursts were collected at between 800MHz and 400MHz-the lowest frequency CHIME can detect.

"Whatever the source of these radio waves is, it's interesting to see how wide a range of frequencies it can produce". The latest burst of signals were recorded at a frequency of 400 megahertz, whereas the first burst was recorded at a higher frequency of 700 megahertz.

'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'. "It might point to a difference between their internal mechanisms".


While this preliminary data doesn't provide a clear indication of what fast radio bursts are, CHIME provides reason for optimism that the "we need more data" mantra is likely to be met. CHIME is now fully commissioned, and it will be taking data full time and with the instrument's full field of view.

Describing neutron stars as "energetic objects", she adds they could maybe produce bursts like the ones detected by CHIME.

The Canadian telescope also detected the lowest frequency FRB seen so far.

As such, scientists believe that FRBs have a natural origin, and because of its short few millisecond-long duration, could possibly be the effect of the merging of neutron stars.

Two FRB repeat themselves. It came six times from the same location, 1.5 billion light-years away. For starters, the existence of repeating FRBs like the one captured past year could rule out some possible origins. "Our data will break open some of the mysteries of FRBs". Harvard astronomer Avi Loeb told Gizmodo that the reported results are "trustworthy and solid". "I look forward to the day when we have hundreds of repeaters". These bursts might be more common than we had ever thought because we can't really notice them.

"So what we've shown is that by discovering a second FRB is that the repeating FRB is not unique and maybe we can hope to find more", he said in the video interview. While interesting, these new observations, he said, can not tell us about the nature of these sources-at least not yet.

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