Discover and read the best of Twitter Threads about #ehtblackhole

Most recents (10)

A year ago today, we unveiled the M87 #BlackHole image by @ehtelescope! We were so proud to finally share our hard work (by 300+ scientists & engineers) with the rest of the world! Let me tell you a little bit about the crazy journey to get here
#OTD #BlackHole1year 🥳
@ehtelescope uses the technique of very long baseline interferometry to achieve the resolution necessary to see a black hole 55 million light-years away! We synchronized 📡📡 around the world, and synthesized a virtual telescope the size of Earth!
cr. @TheNRAO
The possibility to see the shadow of a black hole with VLBI was first put forward by my advisor, @hfalcke, back in 2000. At just the right radio wavelength, the gas flow around the black hole would be thin enough to peer down into the darkness!

cr. Falcke, Melia, Agol 2000
Read 18 tweets
I'm literally abt to hop on a plane for the rest of the day, but here are a few things that make this #EHTBlackHole press release monumental to me from the perspective of an astrophysicist who studies active black holes.
1. It's still true that we can't *see* a black hole. What sight-abled folx are seeing in this image is the shadow of the black hole (what I typically call "SOS" signals from the material about to fall onto it). This process of material infall onto a black hole is called accretion
2. We've observed black holes for decades using the fact that infalling matter releases copious amounts of radiation (light) before crossing the event horizon. Black holes dominate high energy light like X-rays bc of accretion. This is a composite image of M87. @NASAHubble
Read 11 tweets
La zone brillante sous la tache noire centrale, le trou noir, indique que le trou noir est en rotation, ou que de la matière est en rotation autour du trou noir, ou que les deux sont en rotation. #EHT
Voici les images simulées du trou noir central de la galaxie M87 et l'image observée et dévoilée aujourd'hui. Grâce à ces simulations et leur cohérence avec la réalité observée, on peut en apprendre beaucoup sur la physique de ce trou noir.
Il est fascinant de comparer l'image obtenue du trou noir central de M87 avec la 1ère simulation de l'apparence d'un trou noir par Jean-Pierre Luminet et le trou noir Gargantua du film Interstellar que le prix Nobel de Physique 2017 Kip Thorne a aidé à représenter.
Read 10 tweets
In few minutes, astronomers across the globe will hold six major press conferences simultaneously to announce the first results of the Event Horizon Telescope (EHT), which was designed precisely for that purpose Watch LIVE:
More about the Event Horizon Telescope, an international collaboration aiming to capture the first image of a black hole by creating a virtual Earth-sized telescope
Read 14 tweets
🔭HOY ES EL DÍA: a las 15.07 se revelarán datos pioneros sobre uno de los objetos más misteriosos del universo: los agujeros negros.

El @CSIC acoge la presentación de los resultados del @ehtelescope.

Podrás seguirlo en directo aquí ➡️… #EHTblackhole
Seis ruedas de prensa retransmitirán en directo por todo el planeta este hallazgo pionero, en el que han participado 200 investigadores. El EHT es un telescopio de escala planetaria, con ocho radiotelescopios distribuidos por todo el globo #EHTBlackHole
Desde Madrid hablarán los investigadores José Luis Gómez y Antxon Alberdi, del @iaaucc ; Iván Martí, del @IGNSpain ; Miguel Sánchez, del Instituto de Radioastronomía Milimétrica; y Rebecca Azulay, de la @UV_EG 🔭

Podrás seguirlo en directo aquí ➡️…
Read 23 tweets
The Event Horizon Telescope isn’t exactly seeing a black hole’s event horizon. Rather, it is imaging the “shadow,” a region about 5x larger that would appear dark to us as a result of the deflection of light by strong gravitational effects.
I know, I also wish we could see right to the horizon. But if we see the shadow, it’s considered very strong evidence (complementary to other sorts of evidence!) of the presence of a black hole.
I’ve also seen the shadow described as an “image” of the event horizon, but it’s probably better to think of it as the image of the photon region around the black hole.
Read 28 tweets
📣 🚨 📣 A major announcement is expected tomorrow from the Event Horizon Telescope @ehtelescope #EHTblackhole [thread 👇🏼👇🏼👇🏼]

The @ehtelescope is not just one, but eight telescopes stationed across the globe to create a huge virtual observatory - big enough to capture the first ever details of the black hole at the centre of the Milky Way...
(The @ehtelescope is so big, in fact, that a typical night of observations will yield about as much data as a year’s worth of experiments at the Large Hadron Collider.) 🤯
Read 9 tweets
We hit the max limit of posts to the previous twitter thread on @ehtelescope ... so do read that first and then follow us here ...
How the gas circles around 2 fall into the BH, the reason why our galactic #EHTBlackHole is weaker than other of similar mass and why huge relativistic jets launched by BH like in M87 are all not well know. @ehtelescope images should answer some of them
@ehtelescope has added 3 new telescopes now, including one in Greenland! This new network can make more images with even more magnification now. We have seen flares from our BH when objects fall into it and hope to image it the next time it happens…
Read 14 tweets
The Event Horizon Telescope will be announcing its results at 6.30 pm IST on 10th April. The @ehtelescope is trying to image the shadow of the supermassive black hole at the centre for our Milky Way, so this is going to be big news indeed! This is a thread on the #EHTBlackHole
You can watch the press conference live at… and
. Press note on #EHTBlackHole at… &…. Why are we all excited about this? What will the @ehtelescope announce? How can we image a black hole?
Will they show us a blurry image of #EHTBlackHole where we can't make out anything, like, or something that will make us gasp in awe, like…? Follow this thread to figure out the why, how and what ...
Read 26 tweets

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