We have just seen the first image of a black hole, the supermassive black hole in the galaxy M87 with a mass 6.5 billion times that of our sun. But what is that image really showing us?
This is an awesome paper on the topic by J.P. Luminet:
Image of a spherical black hole with thin accretion disk
Astronomy and Astrophysics, vol. 75, no. 1-2, May 1979, p. 228-235
Using my every day intuition I wondered: will we see the “shadow“ of the black hole even if we’re looking edge on at the accretion disk? The answer is yes because the black hole warps space-time, so even if we wouldn’t normally be able to see the back of the accretion disk, we can in this case because its light is bent up and over the black hole. Similarly we can see light from the bottom of the back of the accretion disk because it’s bent under the bottom of the black hole. Plus there are additional images from light that does a half turn around the black hole leading to the inner rings.
What about the black hole “shadow“ i
0 views
367
100
2 days ago 00:52:27 0
Awakened Christ Consciousness: The Hidden Message of Jesus Revealed
2 days ago 00:04:21 0
Getting Pregnant after 36 | Best ways to Natural Conception without IVF and IUI- Aasha Ayurveda
2 days ago 00:04:14 0
How EVIL VITALITY Really Plays CS2
3 days ago 00:09:32 0
Making a Teddy Bear Keychain with Hair Rubber Bands and Sewing Thread / Incredibly Simple Steps
5 days ago 00:10:38 19
Rear Choke Submission! | Jena Bishop v Ekaterina Shakalova | Full Fight | PFL WT 6 2025
5 days ago 00:04:24 1
CryptoPromo – The Leading Crypto Marketing Platform in 2025?
6 days ago 00:00:24 0
The Most Adorable Monster in Japanese History
7 days ago 00:03:15 0
The Wallet Gesture and Invitation by Pastor Lance Edminster 2025 06-29
1 week ago 00:12:59 0
Americans Invented a New Christianity: Here’s Why That’s Terrifying
1 week ago 00:03:55 12
English Christian Song | “Those Who Are Not Acknowledged by God“
1 week ago 00:00:30 2
hadama #funnyclip #baby
1 week ago 00:04:35 10
Jeff Bezos’ $10M Venice Wedding: Inside the Lavish Celebration & Celebrity Guest List | NEWSDRIFT
1 week ago 00:12:56 0
Google’s AI Found a Glitch in Reality — And It’s Getting Worse
1 week ago 00:00:34 1
Background suppression optical sensor! High sensitivity, strong stability, handle any environment.
1 week ago 00:03:02 0
CryptoPromo – How to Market a Crypto Project in 2025 (Step-by-Step Guide)
1 week ago 00:14:02 1
DIY Puffy Boxy Quilted Patchwork Travel/ Makeup Bag Swing Tutorial
1 week ago 00:07:36 1
P Diddy Darts Eyes at Federal Prosecutor as She Rips Him in Closings
1 week ago 00:35:25 0
Теория Большого Взрыва — убита Джеймсом Уэббом?
2 weeks ago 00:00:13 0
My Home’s ’Luxury Feel’ Secret: Wood Blinds Are This Beautiful!
2 weeks ago 00:52:26 1
WWII: The Secret Financial Deal That Kept Hitler in Power - Historical Documentary - AMP
2 weeks ago 00:13:32 1
Surprising Way to Support Your Liver and Lose Fat!
2 weeks ago 00:07:47 0
The World’s First Flying Humanoid Robot
2 weeks ago 00:30:59 1
Шью детское лоскутное одеяло. Одеяло за час. Лоскутное шитье, остатки в дело. Пэчворк.
2 weeks ago 00:06:49 0
Tutorial: How to make your first edit in Liquipedia