Dr. Becky | JWST just made the "Crisis in Cosmology" WORSE @DrBecky | Uploaded 1 year ago | Updated 2 days ago
Visit brilliant.org/DrBecky to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.
#JWST #crisisincosmology #hubbletension
Another of my videos for "JWST month" on my channel celebrating one year since the launch of JWST!
Anderson & Reiss (2018; is the cepheid calibration “biased bright”?) -
Freedman (2021; TRGB calibration reducing tension) - arxiv.org/pdf/2106.15656.pdf
Yuan et al. (2022; first look at Cepheids with JWST) - arxiv.org/pdf/2209.09101.pdf
JWST project 1995 public file: https://www.stsci.edu/jwst/phase2-public/1995.pdf
JWST weekly observing schedules (made public each week) - https://www.stsci.edu/jwst/science-execution/observing-schedules
JWST raw data archive access (public images available to download free) - https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html
00:00 - Introduction
01:32 - What is the crisis in cosmology?
01:43 - Method 1: Using supernova calibrated by Cepheid variables stars
04:22 - Method 2: Fitting to the Cosmic Microwave Background
06:44 - Two possible explanations
07:10 - Are the Cepheid variables “biased bright”?
09:24 - What’s the plan for JWST?
10:05 - The first look with JWST at Cepheid variables in NGC 1365
14:22 - Brilliant
15:34 - Bloopers
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📚 My new book, "A Brief History of Black Holes", out NOW in hardback, e-book and audiobook (which I narrated myself!): http://hyperurl.co/DrBecky
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📚 "The Year In Space" celebrating all things space in 2022 from me and the rest of the Supermassive Podcast team: geni.us/jNcrw
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👕 My new merch, including JWST designs, are available here (with worldwide shipping!): dr-becky.teemill.com
LAST SHIPPING DATES FOR CHRISTMAS:
AUSTRALIA & NZ: 29th November 2022
AFRICA & ASIA: 5th December 2022
EU, USA & CANADA: 8th December 2022
UK: 17th December 2022 (Priority shipping 20th December 2022)
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🎧 Royal Astronomical Society Podcast that I co-host: podfollow.com/supermassive
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🔔 Don't forget to subscribe and click the little bell icon to be notified when I post a new video!
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👩🏽💻 I'm Dr. Becky Smethurst, an astrophysicist at the University of Oxford (Christ Church). I love making videos about science with an unnatural level of enthusiasm. I like to focus on how we know things, not just what we know. And especially, the things we still don't know. If you've ever wondered about something in space and couldn't find an answer online - you can ask me! My day job is to do research into how supermassive black holes can affect the galaxies that they live in. In particular, I look at whether the energy output from the disk of material orbiting around a growing supermassive black hole can stop a galaxy from forming stars.
http://drbecky.uk.com
rebeccasmethurst.co.uk
Visit brilliant.org/DrBecky to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.
#JWST #crisisincosmology #hubbletension
Another of my videos for "JWST month" on my channel celebrating one year since the launch of JWST!
Anderson & Reiss (2018; is the cepheid calibration “biased bright”?) -
Freedman (2021; TRGB calibration reducing tension) - arxiv.org/pdf/2106.15656.pdf
Yuan et al. (2022; first look at Cepheids with JWST) - arxiv.org/pdf/2209.09101.pdf
JWST project 1995 public file: https://www.stsci.edu/jwst/phase2-public/1995.pdf
JWST weekly observing schedules (made public each week) - https://www.stsci.edu/jwst/science-execution/observing-schedules
JWST raw data archive access (public images available to download free) - https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html
00:00 - Introduction
01:32 - What is the crisis in cosmology?
01:43 - Method 1: Using supernova calibrated by Cepheid variables stars
04:22 - Method 2: Fitting to the Cosmic Microwave Background
06:44 - Two possible explanations
07:10 - Are the Cepheid variables “biased bright”?
09:24 - What’s the plan for JWST?
10:05 - The first look with JWST at Cepheid variables in NGC 1365
14:22 - Brilliant
15:34 - Bloopers
---
📚 My new book, "A Brief History of Black Holes", out NOW in hardback, e-book and audiobook (which I narrated myself!): http://hyperurl.co/DrBecky
---
📚 "The Year In Space" celebrating all things space in 2022 from me and the rest of the Supermassive Podcast team: geni.us/jNcrw
---
👕 My new merch, including JWST designs, are available here (with worldwide shipping!): dr-becky.teemill.com
LAST SHIPPING DATES FOR CHRISTMAS:
AUSTRALIA & NZ: 29th November 2022
AFRICA & ASIA: 5th December 2022
EU, USA & CANADA: 8th December 2022
UK: 17th December 2022 (Priority shipping 20th December 2022)
---
🎧 Royal Astronomical Society Podcast that I co-host: podfollow.com/supermassive
---
🔔 Don't forget to subscribe and click the little bell icon to be notified when I post a new video!
---
👩🏽💻 I'm Dr. Becky Smethurst, an astrophysicist at the University of Oxford (Christ Church). I love making videos about science with an unnatural level of enthusiasm. I like to focus on how we know things, not just what we know. And especially, the things we still don't know. If you've ever wondered about something in space and couldn't find an answer online - you can ask me! My day job is to do research into how supermassive black holes can affect the galaxies that they live in. In particular, I look at whether the energy output from the disk of material orbiting around a growing supermassive black hole can stop a galaxy from forming stars.
http://drbecky.uk.com
rebeccasmethurst.co.uk
