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Catch the exciting FRB news overnight? "We& #39;ve used FRBs to weigh all the matter in the Universe, & we found the half that was missing!"
Australian-led research team uses @CSIRO_ATNF ASKAP to shed light on missing matter.
https://spaceaustralia.com/feature/we-found-it-fast-radio-bursts-shed-light-missing-matter
https://spaceaustralia.com/feature/w... href="https://twtext.com//hashtag/SpaceAustralia"> #SpaceAustralia
Credit: @ICRAR
Australian-led research team uses @CSIRO_ATNF ASKAP to shed light on missing matter.
https://spaceaustralia.com/feature/we-found-it-fast-radio-bursts-shed-light-missing-matter
Credit: @ICRAR
#SpaceAustraliaCredit: @ICRAR" title="Catch the exciting FRB news overnight? "We& #39;ve used FRBs to weigh all the matter in the Universe, & we found the half that was missing!"Australian-led research team uses @CSIRO_ATNF ASKAP to shed light on missing matter. https://spaceaustralia.com/feature/w... href="https://twtext.com//hashtag/SpaceAustralia"> #SpaceAustraliaCredit: @ICRAR" class="img-responsive" style="max-width:100%;"/>
Using multiple Fast Radio Bursts accurately localised to host galaxies by @CSIRO_ATNF ASKAP, and then using optical telescopes to measure redshift, astronomers were able to determine the density of missing matter across Intergalactic space.
#SpaceAustralia
Credit: @ICRAR
#SpaceAustralia
Credit: @ICRAR
Quick note, this is not Dark Matter - that still remains a big mystery for EVERYONE - but lots of good folks working on lots of excellent research on that.
Check out Francis Froborg & @astroduff
excellent review paper on this topic.
https://arxiv.org/abs/2003.04545 ">https://arxiv.org/abs/2003....
Check out Francis Froborg & @astroduff
excellent review paper on this topic.
https://arxiv.org/abs/2003.04545 ">https://arxiv.org/abs/2003....
ASKAP was able to measure the delay in wavelengths, measuring how much & #39;stuff& #39; the fast radio burst had travelled through since departing its host galaxy.
Really neat science going on here!
#SpaceAustralia
Credit: @ICRAR
Really neat science going on here!
#SpaceAustralia
Credit: @ICRAR
Using the accurate distance measured + the delay in wavelengths observed from the inbound signal, astronomers were able to work out the density of the missing matter.
#SpaceAustralia
Credit: @ICRAR
#SpaceAustralia
Credit: @ICRAR
And the localisation was EPIC! Astronomers could target exactly where it was coming from within host galaxies! (little red circle)
#SpaceAustralia
Credit: J. Xavier Prochaska/UC Santa Cruz, Jay Chittidi (Maria Mitchell Observatory), and Alexandra Mannings (UC Santa Cruz)
#SpaceAustralia
Credit: J. Xavier Prochaska/UC Santa Cruz, Jay Chittidi (Maria Mitchell Observatory), and Alexandra Mannings (UC Santa Cruz)
Dive into this essay / #LongRead about these findings. @ICRAR have made an excellent 3-minute video explainer (at top of article) about this as well - one of the best vids we’ve seen to describe this fantastic research.
Space is soooo cool!
#SpaceAustralia
Space is soooo cool!
#SpaceAustralia
And lastly, here& #39;s the paper if you want to go straight to it!
& #39;A census of baryons in the Universe from localized fast radio bursts& #39;
Macquart, J-P. et al. 2020, Nature, 581, pp.391-395
https://www.nature.com/articles/s41586-020-2300-2
/end">https://www.nature.com/articles/...
& #39;A census of baryons in the Universe from localized fast radio bursts& #39;
Macquart, J-P. et al. 2020, Nature, 581, pp.391-395
https://www.nature.com/articles/s41586-020-2300-2
/end">https://www.nature.com/articles/...
