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El Gordo (The Fat One) Galaxy Cluster - Deep Sky Videos

Professor Meghan Gray discusses the immense galaxy cluster El Gordo (The Fat One), also known less catchily as ACT-CL J0102-4915.
More links and info in full description ↓↓↓
Professor Gray: www.nottingham...
The Atacama Cosmology Telescope: ACT-CL J0102-4915 "El Gordo," a Massive Merging Cluster at Redshift 0.87 - ui.adsabs.harv...
JWST's PEARLS: A new lens model for ACT-CL J0102−4915, "El Gordo," and the first red supergiant star at cosmological distances discovered by JWST - ui.adsabs.harv...
Weighing "El Gordo" with a precision scale - iopscience.iop...
Head-to-Toe Measurement of El Gordo: Improved Analysis of the Galaxy Cluster ACT-CL J0102-4915 with New Wide-field Hubble Space Telescope Imaging Data - iopscience.iop...
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Video by Brady Haran and James Hennessy

Пікірлер: 38

  • @VincentGroenewold
    @VincentGroenewold10 ай бұрын

    I'm so thankful you make these videos, as well as the other channels. Thanks to everyone involved!

  • @zzzaphod8507
    @zzzaphod850710 ай бұрын

    Great to see another video with Prof Gray I'm glad the importance of uncertainty in the estimates was mentioned!

  • @jursamaj

    @jursamaj

    10 ай бұрын

    I think even more important than the uncertainty is the small sample size. On a sample of *1,* an oddity isn't that surprising.

  • @nicksamek12
    @nicksamek1210 ай бұрын

    A very heartwarming story about your friend Felipe, we all have our little academic families to thank

  • @NomDayPloom
    @NomDayPloom10 ай бұрын

    We call our orange cat 'Gordo' because he is a chonk. Now, here we find out he isn't only a chonk, but a galaxy cluster influencing our models of the early Universe. Very good cat! 🐈

  • @Olhado256

    @Olhado256

    10 ай бұрын

    Depending on how big his error bar is, he might be not just a chonk but an absolute unit!

  • @bazpearce9993
    @bazpearce999310 ай бұрын

    Euclid will give us more info on this. Looking forward to the first science results. Please do more NGC videos Brady.

  • @stevepayne3094
    @stevepayne309410 ай бұрын

    Always a happy day when a new Professor Gray 60 symbols (edit: deep sky) Vid drops.

  • @yeet1337

    @yeet1337

    10 ай бұрын

    not 60 symbols

  • @stevepayne3094

    @stevepayne3094

    10 ай бұрын

    @@yeet1337 oops! Thanks for letting me know.

  • @yeet1337

    @yeet1337

    10 ай бұрын

    @@stevepayne3094 :D

  • @trainwreck3697
    @trainwreck36979 ай бұрын

    Cool video as usual. One very minor point, “flaca” means thin or skinny, not exactly flat, that would be “plano”. ☺️

  • @blender_wiki
    @blender_wiki10 ай бұрын

    Congratulations one of the best real informative astronomy channel. Nice audio, perfect explaination without useless emphasis, nice selection of subjects. 👏👏👏👏

  • @redwater86
    @redwater8610 ай бұрын

    Love this channel so much! Thanks!

  • @PaulPaulPaulson
    @PaulPaulPaulson10 ай бұрын

    El gordo, like the spanish Christmas lottery

  • @faenethlorhalien
    @faenethlorhalien10 ай бұрын

    They missed the opportunity to call it "Teh Heccin' Chonker" instead.

  • @m.walther6434
    @m.walther643410 ай бұрын

    I understand that a Galaxy Cluster are Galaxies gravitational bound together. But Gravitation is everywhere, so, how to discern Galaxies gravitational bound or not? Great Video, thanxalot.

  • @garethdean6382

    @garethdean6382

    10 ай бұрын

    The check is whether a galaxy is moving fast enough to not orbit the center of mass. If it's moving too fast it will 'escape' the cluster and so is not bound to it. This is actually a relatively simple measurement to make.

  • @Dre-ip8np
    @Dre-ip8np9 ай бұрын

    Thank you!

  • @jasonremy1627
    @jasonremy162710 ай бұрын

    I'm always excited when there is a new Deep Sky Video, I'm only sad they are so infrequent.

  • @pawciolech2274
    @pawciolech22748 ай бұрын

    My favourite !!!!

  • @FHBStudio
    @FHBStudio10 ай бұрын

    What's funny is that this video would've been the same had the point been across the line with most of its error bar below it. It's within error so there'd be no definitive answer.

  • @judychurley6623

    @judychurley6623

    10 ай бұрын

    I would think that an error bar is symmetrical around the data point.

  • @FHBStudio

    @FHBStudio

    10 ай бұрын

    @@judychurley6623It is, usually (depending on the underlying distribution). Which is why I said/meant that had the actual point been on the other side of the line, the lower end of the error bar would not have been.

  • @user-dm6uh4xm8e
    @user-dm6uh4xm8e2 ай бұрын

    Y'all are cool GODZZ

  • @KiloOscarZulu
    @KiloOscarZulu10 ай бұрын

    They don't have an Edge, but do they have a Bono?

  • @Flesh_Wizard
    @Flesh_Wizard10 ай бұрын

    *The BFC*

  • @garethdean6382
    @garethdean638210 ай бұрын

    The paradigm isn't dead yet. Long live Lambda-CDM.

  • @iugoeswest
    @iugoeswest10 ай бұрын

    I'm not fat. Just big boned!

  • @stoatystoat174
    @stoatystoat1749 ай бұрын

    :)

  • @SolaceEasy
    @SolaceEasy10 ай бұрын

    Doctor, help me! Uhn...

  • @Miguel_Noether
    @Miguel_Noether10 ай бұрын

    😥 she's old now

  • @NorrisSaiyan

    @NorrisSaiyan

    10 ай бұрын

    She’s older, yes, but I don’t think all that old, she’s just running with the Gray hair, which is the noble thing to do

  • @judychurley6623

    @judychurley6623

    10 ай бұрын

    @@NorrisSaiyan So are we all to exactly the same extent, no error bar needed.

  • @adinth
    @adinth10 ай бұрын

    first!

  • @ZennExile
    @ZennExile10 ай бұрын

    Cling to the model, defend legacy over evidence. It's what Einstein would have wanted. (warning! this textbox contains sarcasm)

  • @judychurley6623

    @judychurley6623

    10 ай бұрын

    This study is evidence, with the error bar helping define the range of certainty/uncertainty. That they are looking and measuring to test the model is what is interesting. If the data point fell out of the range, they would have excepted that, and moved on to a new theory.

  • @SharpAssKnittingNeedles
    @SharpAssKnittingNeedles3 ай бұрын

    Meghan is the best! Being a 2D rendering of a 3D field of view herself, she beautifully demonstrated the problem of determining what angles these clusters might be interacting at with those fist bumps!