El Gordo (The Fat One) Galaxy Cluster

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

Рет қаралды 41,863

9 ай бұрын

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.ac.uk/physics/...
The Atacama Cosmology Telescope: ACT-CL J0102-4915 "El Gordo," a Massive Merging Cluster at Redshift 0.87 - ui.adsabs.harvard.edu/abs/201...
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.harvard.edu/abs/202...
Weighing "El Gordo" with a precision scale - iopscience.iop.org/article/10...
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.org/article/10...
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Video by Brady Haran and James Hennessy

Пікірлер: 38

@VincentGroenewold 9 ай бұрын

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

@zzzaphod8507 9 ай бұрын

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

@jursamaj 9 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 9 ай бұрын

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

@bazpearce9993 9 ай бұрын

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

@NomDayPloom 9 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 9 ай бұрын

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

@stevepayne3094 9 ай бұрын

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

@yeet1337 9 ай бұрын

not 60 symbols

@stevepayne3094 9 ай бұрын

@@yeet1337 oops! Thanks for letting me know.

@yeet1337 9 ай бұрын

@@stevepayne3094 :D

@blender_wiki 9 ай бұрын

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

@trainwreck3697 9 ай бұрын

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

@redwater86 9 ай бұрын

Love this channel so much! Thanks!

@PaulPaulPaulson 9 ай бұрын

El gordo, like the spanish Christmas lottery

@faenethlorhalien 9 ай бұрын

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

@Dre-ip8np 8 ай бұрын

Thank you!

@pawciolech2274 8 ай бұрын

My favourite !!!!

@m.walther6434 9 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 9 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.

@jasonremy1627 9 ай бұрын

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

@FHBStudio 9 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 9 ай бұрын

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

@FHBStudio 9 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.

@KiloOscarZulu 9 ай бұрын

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

@user-dm6uh4xm8e Ай бұрын

Y'all are cool GODZZ

@Flesh_Wizard 9 ай бұрын

*The BFC*

@garethdean6382 9 ай бұрын

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

@iugoeswest 9 ай бұрын

I'm not fat. Just big boned!

@stoatystoat174 8 ай бұрын

@SolaceEasy 9 ай бұрын

Doctor, help me! Uhn...

@SharpAssKnittingNeedles 3 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!

@adinth 9 ай бұрын

first!

@Miguel_Noether 9 ай бұрын

😥 she's old now

@NorrisSaiyan 9 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 9 ай бұрын

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

@ZennExile 9 ай бұрын

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

@judychurley6623 9 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.