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Second Repeating Fast Radio Burst Detected | Astronomy

12 January 2019

According to two new papers published today (Jan. 9) in the journal Nature, scientists working at the CHIME (Canadian Hydrogen Intensity Mapping Experiment) radio telescope in the hills of British Columbia have detected 13 new FRBs in just a two-month span.

"Knowing that there is another suggests that there could be more out there".

Unlike typical FRBs that come and go, the discovery of a repeating FRB is vital to increasing our understanding of them, as we are able to train our radio telescopes towards them to study them further.

The new FRBs were detected by the brand new CHIME instrument, or Canadian Hydrogen Intensity Mapping Experiment, located in the Okanagan Valley of British Columbia.

Within weeks of CHIME's FRB-detecting software being activated last summer ― in what Lang said was only a testing phase that didn't run on full capacity ― CHIME detected these 13 new bursts.

"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.

We also know that these 13 detected radio bursts had a much lower frequency than the other bursts recorded so far (400 megahertz, against 700 megahertz previously).

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There's no definitive cause of these fast radio bursts and it's unclear what caused multiple FRBs from the same location.

The low frequency of this new detection could mean that the source of the bursts differ.

Indian origin astronomers and other boffins have come across repeating energy bursts from a single source from deep space for the second time in history.

CHIME reconstructs the image of the overhead sky by processing the radio signals recorded by over a thousand antennas.

That FRB was discovered by the Arecibo radio telescope in Puerto Rico in 2015. Even though we've evolved our understanding of the cosmos over the past centuries, the reality is that we barely comprehend the many mysteries this vast expanse holds within it. Together they could offer some evidence of the extreme or unusual environment they are coming from - or the mysterious technology that some claim alien civilisations could be launching them into space with.

A neutron star, she says, would be the right size - at probably about 10 kilometres in radius. The latest one repeats itself and, therefore, it's actually possible to track it back to the source. Or near the central black hole in a galaxy.

"That could mean [the source is] in some sort of dense clump like a supernova remnant", team member Cherry Ng, an astronomer at the University of Toronto, said in a statement. While interesting, these new observations, he said, can not tell us about the nature of these sources-at least not yet. Scientists say that if they can capture more and more repeated signals, they can start to analyze them and try to solve this mystery once and for all. "But it has to be in some special place to give us all the scattering that we see".

Second Repeating Fast Radio Burst Detected | Astronomy