Lmst

#BlackHoleWeek

RE: https://bsky.app/profile/did:plc:cz73r7iyiqn26upot4jtjdhk/post/3lormazatrs2p

@ArpBot Just in time for #BlackHoleWeek! Thanks ArpBot.

Celebrating #BlackHoleWeek, some of our scientists are working with the Science Ceilidh #SciComm team to create a binary black hole themed dance. Science Ceilidh work to connect researchers with their local communities through the arts. The final dance will be shared with participants at the upcoming #GR24Amaldi16 conference.

📷 : @daniel_williams @UofGravity

Dr Andrew Spencer and Dr Rachel Grey practising the steps with Lewis Hou of Science Ceilidh on the fiddle. They are in font of a white board relating how the inspiral, merger and ringdown phases of a binary black hole coalescence can be turned into a dance.

So much spinning! Andrew and Rachel are a blur. Lewis looks pleased.

It's #BlackHoleWeek!

You might not expect it, but NSF–DOE Rubin Observatory's observations in visible light will help us learn about these dark and mysterious cosmic entities. But how?

Rubin won't observe black holes directly. Instead, it'll observe super-bright blasts of light called Active Galactic Nuclei, which are powered by hungry supermassive black holes.

AGN are some of the brightest objects in the Universe, which means we can see them extremely far away.

https://youtu.be/-S__WQO7dMw

A simulation of two black holes merging and the ripples in spacetime they create https://youtu.be/uYncv7z9Zyc

Discover more about how we have come to understand gravitational wave signals from Kip Thorne's Nobel Prize Lecture https://youtu.be/TZLvEp_xjnY

#BlackHoleWeek #GravitationalWaves

Apparently it's #BlackHoleWeek!

Here's a conceptual black hole and our very own Sagittarius A*.🥳

Did you know if you get to close to a black hole you'd be spaghettified?🤭

#Art #Space #SpaceArt

An oil painting of a black hole in reds, oranges and yellows.

An oil painting of Sagittarius A* in reds, oranges and yellows.

“I am most proud of is the LIGO-Virgo Binary-Black-Hole Orrery. I felt like I was part of a cool secret because these events were not public at the time, and I was an undergraduate working on a really exciting project” – Teresita Ramirez #HumansOfLIGO #BlackHoleWeek

Teresita taking a selfie in a tour of the beam tube. It is shiny

Could you accidentally turn a game box into a black hole? I looked into that a couple years ago for #BlackHoleWeek!

It is Black Hole Week!

Let's take a trip around one. In this visualization from NASA, the camera approaches a black hole, skims the event horizon and slingshots back out.

A flat, swirling cloud of hot, glowing gas called an accretion disk surrounds the black hole. Glowing photon rings form closer to the black hole from light that has orbited it one or more times.

https://www.youtube.com/watch?v=XgF46YYPplI
More info at https://science.nasa.gov/universe/black-holes/supermassive-black-holes/new-nasa-black-hole-visualization-takes-viewers-beyond-the-brink/
#BlackHoleWeek
4/n

The story of our first discovery of two merging black holes

https://youtu.be/0lUxk8yxaNY

A documentary by Kai Staats

#BlackHoleWeek #GravitationalWaves #Astrodon

Gravitational waves and black holes mergers have been inspiring Christopher Taudt (@harte_echtzeit
sonomu.club) to create music!

Read all about it in the #LIGOMagazine
https://ligo.org/wp-content/uploads/2025/03/LIGO-magazine-issue26.pdf#page=20

Check out the music at https://callitanythingrecords.bandcamp.com/album/ji-k-kan

#BlackHoleWeek

We had to pull out Planet Unknown with the black hole board for #BlackHoleWeek. HAD to!

A player board for Planet Unknown on the table. It features a black hole with an orange accretion disk. There are polyomino tiles on the board, surrounding the black hole. To the left is a corporation board with lots of tracks.

It's #BlackHoleWeek! Share with us in the comments your most creative black hole art designs!

🖼️: An artistic take on a neutron star–black hole merger by Carl Knox, OzGrav-Swinburne University

A rainbow-coloured imagining of the distorted spacetime around a black hole and neutron star spiralling together

It's Black Hole Week.

Let's marvel at the images and size of these black holes taken by the Event Horizon Telescope over the past few years - Sgr A* the black hole at the center of our galaxy and the super massive black hole (SMBH) in galaxy M87. The images of SMBH TON 618 and the SMBH in the Andromeda galaxy are copies of the image of SMBH M87 but with scale info added by me.

https://eventhorizontelescope.org/
#BlackHoleWeek
2/n

Images and scale info for Sgr A*
SMBH in the Andromeda galaxy (image is same as the one for M87)
SMBH in the M87 galaxy
SMBH TON 618 (image is same as the one for M87)

GW230529 was a particularly interesting observation of a neutron star merging with an unusually small black hole. Mike Zevin, Vincent Juste, Shania Nichols, Shanika Galaudage discuss behind the scenes work on the discovery in #LIGOMagazine https://ligo.org/wp-content/uploads/2024/10/LIGO-magazine-issue25.pdf#page=6

#BlackHoleWeek

Infographic for GW230529_181500. The source is probably a ~3.6 solar mass black hole and ~1.4 solar mass neutron star

It is Black Hole Week!

Check out this wonderful biographical memoir of John Wheeler by his student Kip Thorne.

Physicist Wheeler, famed for his analogies and aphorisms, is also known for popularizing the term "black hole" and for inventing the terms "quantum foam", "neutron moderator", "wormhole" and "it from bit."

https://www.nasonline.org/wp-content/uploads/2024/06/wheeler_john.pdf
#BlackHoleWeek
1/n

Fun vid & quick reads for #BlackHoleWeek:

• https://youtu.be/e-P5IFTqB98
• https://en.m.wikipedia.org/wiki/Black_hole
• https://exoplanets.nasa.gov/news/1564/what-is-a-black-hole/
• #BlackHole types: https://science.nasa.gov/universe/black-holes/types/
• https://www.cfa.harvard.edu/research/topic/black-holes

#BlackHoles #Physics #Science #Astrodon

Black holes, black holes… nature’s cosmic vacuum cleaners, sucking in stars, secrets, and probably your missing socks. They bend space, time, and your will to resist googling “spaghettification.” What’s "inside"? No one knows. Maybe a party. BYO gravity. We celebrate the unknown this #BlackHoleWeek!

#BlackHoles #Physics #Science #Astrodon

A labeled illustration depicts the anatomy of a black hole. At the center lies the singularity, described as the region of infinite density where matter has collapsed. Surrounding the singularity is the event horizon, the boundary beyond which nothing, not even light, can escape the black hole's gravity, marking the point of no return.

Outside the event horizon is the photon sphere, a region where gravity is strong enough to bend light into orbits. Photons within this sphere can travel in circular paths, creating the appearance of a bright ring around the black hole's shadow.

An accretion disc, a swirling disc of superheated gas and dust, orbits the black hole at immense speeds. This disc emits electromagnetic radiation across various wavelengths, revealing the black hole's location. Material within the accretion disc is destined to cross the event horizon, while some is propelled outwards in powerful relativistic jets of particles and radiation. These jets originate near the black hole and can extend for vast distances at near light speed.

The innermost stable orbit is shown as the closest circular path that material can maintain around the black hole without spiraling inward.

A couple years ago for #BlackHoleWeek, I looked at the black hole cards in Stellar and found some results they reminded me of.

“[My] favourite event is the [neutron star–black hole] NSBH merger GW200105; I picture NSBHs events as the 'experienced' black hole showing the 'baby' neutron star what to do, and always find it funny.” – Leigh Smith #HumansOfLIGO

https://humansofligo.blogspot.com/2023/07/leigh-smith.html

#BlackHoleWeek #Astrodon

#BlackHoleWeek

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