Jason Hessels: Even if we never figure out what fast radio bursts are, they will still be superb probes of surrounding and intervening material. #AAS235
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In the last 2 years, we’ve gone from a dozen or so fast radio bursts, now to hundreds of events. This is mostly thanks to the Canadian CHIME telescope.
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We’re still missing most of them though. We think there’s one fast radio burst in the sky EVERY TEN SECONDS.
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One of the most shocking moments in the short history of fast radio bursts was when we discovered that some of them REPEAT. This rules out destructive one-time-only explosions, and implies some sort of flaring persistent object.
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These days it’s all about location, location, location. Figuring out exactly where a fast radio burst is in the sky, and which galaxy it belongs to, is really hard. So far we’ve only been able to do this to about 5-6 fast radio bursts.
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Several fast radio bursts have been so important to us that we’ve given them names. Most notably the Lorimer Burst (the very first one), the Thornton Bursts (which convinced us all that this was a real physical phenomenon), and the Spitler Burst (the first repeating one).
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Getting the precise location of just one fast radio burst within its parent galaxy required astronomers to use the Arecibo, VLA, EVN, Gemini and then HST telescopes. It took more than a year of work by a huge team.
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Until yesterday, we only had localisations, host galaxies and redshifts for just four fast radio bursts. Two more were announced yesterday!
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Here’s one of the two new localisations announced yesterday. It’s quite different from all the others. “Boffins are baffled”, suggests Jason Hessels.
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Hessels: By the end of 2020, there will be more than 1000 known fast radio bursts. “What was once a controversial anomaly is blossoming into a rich field of study.”
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