Recent comments in /f/space

Anonymous-USA t1_je1v40n wrote

Reply to comment by YourWiseOldFriend in Could Hawking radiation coming from black holes be the same as the dark energy accelerating expansion of the universe? by Rskingen

Duality aside, photons have no mass and cannot be dark matter.

As for duality, they act as energy waves except when interacting with other particles as they absorb or emit radiation. EM and photons are well understood and not related to dark matter.

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A_Suspicious_Fart t1_je1v3uq wrote

Reply to comment by spsheridan in Fast radio burst linked with gravitational waves for the first time by spsheridan

I think you are misunderstanding the process of peer review. Yes, it was peer reviewed during the publication process. However, that does not mean there are no flaws in the analysis, or the conclusions drawn from the analysis in the paper. There are a lot of published papers in reputable journals that have been peer reviewed, but still haven’t been tested well enough to confirm the claims of the authors. In some cases the claims are just wrong. This process is iterative, and can take many years. We should never take any claims, no matter how compelling as gospel. Instead they should be met with varying levels of skepticism.

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evydude456 t1_je1ul5m wrote

Reply to comment by elverloho in Fast radio burst linked with gravitational waves for the first time by spsheridan

(Different) radio astronomer here! There are two main types of FRBs: repeaters and non-repeaters. While we are far from understanding the source of every single FRB, it’s looking more and more likely that there is not one single explanation behind every single one. It’s possible that non-repeating bursts come from cataclysmic events like mergers between neutron stars or other heavy objects, while the sources of repeating FRBs could be compact objects like pulsars and magnetars, which have been observed to emit bright single pulses in radio waves.

In fact, CHIME, the radio observatory mentioned in this article, recently published the first large-scale catalog of FRBs. From the growing sample we’ve seen, it looks like there are other differences in the bulk populations of repeating and non-repeating FRBs— things like their pulse shapes as well as their brightnesses at different frequencies. This could also point to there being multiple sources of FRBs, but again, we’re not quite confident enough to draw any strict conclusions.

I will say that there’s no evidence that any FRB we’ve discovered so far has come from any extraterrestrial intelligence or non-natural sources. That’s why we’ve got to keep looking!

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