Talk:Fast radio burst

FRB 200428 is thought to be from the closest source so far - within our galaxy, but has double the DM of others (outside our galaxy?). Has there been any discussion of FRB 200428s DM ? - Rod57 (talk) 08:44, 8 August 2020 (UTC)

The DM is a measure of the electron column density between the radio source and the observer. In the case of FRB 200428 it appears that it is located within the Milky Way but there is a high local electron density as it is located in a Super Nova remnant - hence the much higher DM than expected for a galactic radio source. See https://arxiv.org/abs/2005.11109 for the pre-print of the relevant paper. John Murrell — Preceding unsigned comment added by 86.191.25.41 (talk) 18:18, 20 October 2020 (UTC)

Thanks, and for the arxiv link. Rod57 (talk) 20:49, 6 November 2020 (UTC)

You're right it blows away many of the crucial arguments astronomers have been using so they are ignoring it and have nothing to say for themselves. They are embarrassed and look very foolish. It's just like all the embarrassing contradictions surrounding their big bang theory. 47.202.49.36 (talk) 04:37, 17 August 2020 (UTC)

In the first section it states as fact that most FRB's are extragalactic, which is not necessarily true. Also in the first section someone wrote regarding 200428 that Furthermore, the dispersion measure was too low to have originated anywhere outside of the Milky Way which is not necessarily true either. Those statements should be struck.47.201.194.211 (talk) 04:28, 24 January 2021 (UTC)

FRBs occur to reduce the uncertainty between afar galaxies and act as a common measurement in order they keep the galaxies which interact in the same many-world (Everettian) sub-universe. (It is not self-evident that different galaxies exist in the same sub-universe; because they have to NECESSARILY exchange some information [not necessarily much, because when a connection is established it can hold these afar galaxies in the same sub-universe due to intermediaries/particles that interact = become partially entangled AFTER the first impact. Also these galaxies have internal cohesion thus a linking hook doesn't have to recreate the galactic cohesion].)

(Of course that explanation is very philosophical, weird, nonstandard and far-fetched. The probability of that view being correct is negligible, but we have to mention it.)

2A02:2149:8421:7500:EC3E:C4E2:4041:B761 that sounds like a speculation, but we need a reliable source to cover in this article. However I will say that any observed galaxies are in our Universe. Once a photon makes it from there to here, it will be entangled. Graeme Bartlett (talk) 21:56, 16 November 2021 (UTC)

Graeme Bartlett, please see this and this. I'm afraid I'm just scratching the surface. Drmies (talk) 18:55, 17 November 2021 (UTC)

Could mention coincident detection of neutrinos : A Significant Association Between CHIME Fast Radio Bursts and Low-Energy IceCube Neutrinos says " We report an association between FRBs and low-energy IceCube neutrinos with energies 0.1 -- 3 TeV at a significance level of 21.3σ" - Rod57 (talk) 01:31, 27 December 2021 (UTC)

When it is peer-reviewed and published in a journal, then it would be appropriate. Otherwise we can consider it a speculation. Graeme Bartlett (talk) 21:47, 27 December 2021 (UTC)

It has been suggested that Fast Radio Bursts are Primordial Black Holes tunneling into White Holes via Quantum Gravity effects, in other words, Exploding Black Holes, here: . Is there any reason why this has not been mentioned yet? IAnthIsAwesome (talk) 18:36, 30 December 2021 (UTC)

A new FRB was detected recently, dubbed FRB 20191221A. It is described by a news publication as "currently the longest-lasting FRB, with the clearest periodic pattern, detected to date." In the abstract of the paper published in Nature, it's noted that its duration and the number of components in its periods make it an "outlier." Seems like that would qualify as notable. Quizzical2718 (talk) 00:48, 14 July 2022 (UTC)

• Could clarify if long 'duration' is of activity since detection, or of a single burst. - Rod57 (talk) 12:22, 13 January 2026 (UTC)

Interesting  news item: https://www.space.com/astronomy/scientists-find-universes-missing-matter-while-watching-fast-radio-bursts-shine-through-cosmic-fog, 6/16/2025

This is the 'missing' baryonic matter, now measured by the slowing of the FRB's light passing through the diffuse halos around galaxies. A definite must-add to the article once we get a peer-reviewed cite. Pete Tillman (talk) 15:58, 16 June 2025 (UTC)

A better report:

https://www.science.org/content/article/radio-bursts-reveal-universe-s-missing-matter

16 JUN 2025. Appears to be free access. Good for an addition to the FRB page, I think, Pete Tillman (talk) 14:59, 17 June 2025 (UTC)

Here is first report I've seen of different bursts (ascribed to the same 20201124a source) having different DMs (840 - 940 cm-3), perhaps suggesting that at least 100 cm-3 of the DM is due to local conditions (rather than extra-galactic distance). Frb 20201124A Observations Reveal 32.159ms Intrinsic Widths and Frequency-Dependent Decline. Need to see if ref confirms report. - Rod57 (talk) 12:16, 13 January 2026 (UTC)