#smbh

[shinypetrichor]

DOMINIC HOWARD in SUPERMASSIVE BLACK HOLE l Official Music Video, 2006

[ludashiki]

2024 | sad hungry beast

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[nonsense-noggin]

The Event Horizon Telescope (EHT) combined collaborative radio data from an international array over 4 different continents to create the first ever polarized-light image of Sagittarius A*, Milky Way's very own supermassive black hole, or at least an image the dusty/gassy/plasma accretion disk around it. The image looks cool as hell, but also reveals an organized pattern in the magnetic field similar to the one found in M87*, a thousand-times-more-massive supermassive black hole in the distant M87 galaxy.

The Next Gen EHT plans to collect these images over months and years to create black hole videos. Today was another great day for science!

[sunburnacoustic]

For any Muse fans who might get frustrated about how the fandom seems to always be throwing a tantrum about new Muse songs and how much they dislike Muse's 'new directions', just a gentle assurance that the fandom has always been like this.

They were really not fond of Black Holes and Revelations when it came out, some of them didn't even believe Supermassive Black Hole was a real song. They thought it was a joke. Muse, their beloved metal-leaning hard rock band, going glitz, glam and electro? Ignoring the fact that their main man just built a whole synthesizer into his electric guitars (the XY Kaoss pad), Muse and electronic? Ignoring the arp synth on Bliss, Muse and electronic?

Supermassive Black Hole was the first single on BHAR, and the old fans were aghast. Hated it. Then when Twilight used the song and brought Muse to the attention of... well. Teenage girls, essentially, it again split the fandom into the old heads (the real, gritty rock fans, you hear me) and the airheaded dumb teenage girls that only knew them through Twilight and silly romance novels. (I hope you understand these aren't my words. It's just... fucking 2006. The 00s were horrible like that.)

They also hated Take A Bow. Despite the fact that Muse had been using the opening synth progression as an intro to Space Dementia live throughout the Absolution tour, they disliked the synths on it. They hated Invincible.

And just to balance things out, Muse in the meanwhile were having a blast: Matt doing his alien schtick in interviews, jetsetting across Europe from headline gigs and festivals to award shows, they occasionally got to take charter flights and stuff, and they were in an interesting place musically where their sound was expanding, taking inspiration from nightclub indie music like LCD Soundsystem and bussing with the Strokes (they've said Starlight was inspired by them), working up to playing some of the biggest arena and even stadium gigs of their lives. 2006 Reading Festival, their first Reading headline. Huge moment for Muse. 2007, two sold out nights at the 90,000 capacity new Wembley. All this is to say, if Muse hadn't made Black Holes the album they did, there's no way they'd be nearly as successful as they are today. So don't doubt it and don't feel bad for them! But the Muse fandom is passionate, and so you maybe heard the naysayers louder than you would with most band fandoms.

But were there detractors before Black Holes? Might surprise you, but yes! And I'm not talking about Pitchfork and the rest of the press!

This will make no sense in 2025's musical landscape and understanding of rock and guitar music, but fans hated Time Is Running Out. I've seen those old Muse messageboard threads, they did Not hold back. TIRO was a 'pop song', and so it was Bad. It was Muse selling out. Fans had heard quite a few of these songs well before release, and Muse were threatening to go 'more prog' on their third album, and it threw their OOS-loving fans a little. (Check out this interview from the archives with then-BBC Radio 1's Steve Lamacq for a sense of what was going on).

So don't worry about who hates Thought Contagion or whether fans inexplicably dislike Will Of The People, an album so classically Muse that I am forced to wonder whether the fans that dislike it and I are actually thinking about the same band when refer to them. It's been like this on The Resistance (god, they hated the symphonic bits, strings used to really rile up the anti-sentimental rock fandom. Riffs and RIFFS ONLY you hear me?), The 2nd Law got So Much Hate for Muse embracing electronic music (again, not new....) and working with Skrillex, it was the whole reason the 'back to basics, back to our rock roots' idea even popped into the band's head when going in to make Drones. Matt's talked about the well, fan pressure to sound a certain way on the song Pressure, and Simulation Theory itself got a lot of agitated fan responses.

The interesting thing with Muse is that despite it all, the reason why they are still such a widely loved band is that people come around to their albums. At the end of the day, it is fantastic music. Well written, incredibly forward-thinking and genre-blending. Fans' love for Muse keeps them giving the newer albums another chance, and you will often see this in most Muse Youtube comment sections (or other places), there are many comments about how their songs grew on fans. They like them after a few listens. It's just about trusting the band to be good at their job and make incredible music, and I can't give up on Musers despite all my above qualms because they do still have that love and trust. Don't worry about it.

Also, about BHAR specifically (and this is me citing some sources), someone asked about it on the Muse reddit a little while ago and it'll basically confirm what I just told you. Very interesting insight into the place rock music occupied in popular music at the time (in opposition to other genres, the rebellion genre if you will, as opposed to Just Another Popular Genre. That's a whole post in itself). Don't worry about it.

[hypnocus]

let go

[taraxippos]

This is breaking my brain right now. How is a discrete 'object' this fucking big. Is this allowed?

[bliss-tastic]

help my brain is nothing but "ooooooh you semasoulalai" i can't escape it

[bunny-claws]

galactic magic ✧

a galaxy is a collection of solar systems, stars, stellar remnants, dark matter, interstellar gas, and dust which is bound by gravity from the objects it contains. nebulae, on the other hand, are clouds of cosmic dust and [primarily] hydrogen/helium gas within a galaxy, many of which form stars!

this post is based on my personal understanding of a very complex and advanced topic - i'm not a professional astronomer so be nice.

common galaxy shapes:

barred spiral - spiral with a central bar shaped structure made of stars - the milky way is a barred spiral galaxy :)

elliptical - round or oval with a central bulge

irregular - blobs that lack a defined center and have no designated boundary

lenticular - has a central bulge and disk much like a spiral galaxy but without arms; has lost or used much of its matter and has very little star formation activity; thought to contain aging stars

spiral - rotating disk with a central bulge of stars and spiral arms that are sites of star formation

galactic terms & facts

active galactic nucleus (AGN) - the center of an active galaxy; theorized to be a supermassive black hole that is accreting at a rapid speed

active galaxy - 100x brighter than an "inactive" galaxy because of the huge amount of radiation that the SMBH emits from the rapid accretion of matter; can be any shape

blazar / blazar galaxy - active galactic nucleus (AGN) whose jet is pointed directly at the earth

dark nebula - nebula whose clouds are so dense that it blocks light from other stars and objects behind it; clouds are made up of frozen carbon monoxide and nitrogen which blocks out visible light wavelengths

diffuse nebula - irregularly shaped nebula without clearly defined boundaries

emission nebula - emits its own radiation either by star formation or as a planetary nebula in the presence of ionized ultraviolet radiation emitted by nearby (hot) stars; star nurseries

flux nebula - nebula without a central point of illumination; is illuminated by the flux (the amount of energy from a luminous object that reaches a given surface or location) of all the stars in the milky way

H II regions - emission nebula; forms when the ultraviolet radiation from newborn super hot stars (o and b type) begins to ionize hydrogen from nearby gas clouds

planetary nebula - emission nebula; forms from the stellar dust and gas that is ejected by dying stars that are low to intermediate in size (1 to 8 solar masses); has nothing to do with planets but was mistaken for one in the late 1700s, which is how it got its name; our sun will eventually end up as a planetary nebula

protoplanetary nebula - the stage just before the formation of a planetary nebula when the star first begins to expel its outer layers

pulsar wind nebula - type of nebula that exists inside the remnants of a supernova and is powered by the winds of a rapidly spinning, highly magnetized neutron star, aka, pulsar

quasar / quasar galaxy - AGN whose jet is observed at a wide angle; extremely bright and further away than a seyfert; can be detected in the absence of the galaxy around it because of its luminosity

reflection nebula - reflects light from nearby stars

satellite galaxy - galaxies that orbit other galaxies

seyfert galaxy - one of the most common active galaxies; luminosity varies over time; "younger" thus closer to us in distance; most are spiral galaxies; the surrounding galaxy is more easily detected than that of a quasar galaxy because the AGN doesn't outshine it

starburst galaxy - extremely active star forming galaxy

star nursery - star forming nebula

supernova remnant nebula (SNR) - consists of material ejected by the explosion of a supernova; bound by the shockwave formed from the ejected material

on emission nebulae: H II regions give life to newborn stars, whereas planetary nebulae are the result of stellar death. blazars and quasars are essentially the same thing. the only thing that differs is the viewing angle.

magical associations for some of the above

nebulae

dark - warding, shielding, protection

flux - community, collective, self-reflection, illumination

H II region - rapid growth, expansion, catalyst, manifestation

planetary - destruction, death, rebirth, transformation

protoplanetary - the beginning of the end, transitions, metamorphosis

pulsar wind - weather magic, wind calling, swiftness, catalyst

reflection - shadow work, meditation, introspection

supernova remnant - spirit work, storm magic, destruction

galaxies

barred spiral - harvest, vitality, balance, abundance

blazar - illumination, focus, insight, courage, confrontation

elliptical - protection, warding, shielding, boundaries

irregular - illusion, freedom, unpredictability

lenticular - stasis, stillness, wisdom, responsibility

quasar - power, energy, manifestation, illumination

satellite - sacrifice, obsession, hyperfixation, focus

seyfert - hidden power, moderation, humility

spiral - transformation, distortion, illusion, balance, death and rebirth

starburst - growth, expansion, manifestation, fertility, cleansing

some ideas

make a crystal grid in the shape of whatever galaxy you choose; imagine the central crystal is the AGN of the galaxy; could be used as a battery to charge the grid

implement colors accordingly - you can use the spectral class of stars or the color of visible light emitted by each object (different elements give off different colors depending on their state of matter); can be applied to candles, crystals, textiles, etc.

use galaxy shapes as the base of sigils

print photos of or draw galaxies and nebulae - write your petitions over them

craft a glitter jar with star sequins and mica powder and twirl it around to simulate the appearance of a spiral galaxy

carve galaxy shapes into candles or other objects

utilize galactic energy as a catalyst

think of a supernova remnant nebula like a web to trap or shock [something]

imagine yourself as a satellite galaxy, and the parent galaxy as something you're trying to attain or concentrate on

reflection nebulae are great for introspection but can also be used to return to sender

starburst galaxies can be utilized for more than just personal growth - think financial growth or career advancement

barred spiral galaxies tend to look like double sided scythes while lenticular galaxies contain aging stars; these two types of galaxies can be associated with saturn and its correspondences as well

visualize an elliptical galaxy surrounding you and your space versus a traditional circle for protection during spells and rituals - you are the AGN in this case (neat)

star nurseries and starburst galaxies can be seen as a place to store your ideas so they can grow and manifest over time

irregular galaxies and diffuse nebulae have no defined shape and can be used for generalized energy

these correspondences are personal to me - ymmv. please source back to me if you reference my content, thank you!

celestial body correspondences stellar color magic planetary composition / correspondences ✧ magical ideas ✧

© 2025 bunny-claws

[mysticstronomy]

CAN TWO SUPERMASSIVE BLACK HOLES MERGE??

Blog#440

Saturday, September 28th, 2024.

Welcome back,

A team of astrophysicists that includes the University of Toronto’s Gonzalo Alonso-Álvarez has shown that pairs of supermassive black holes can merge together into a single, larger black hole – a major breakthrough in addressing what is known as the "final parsec problem."

longstanding astrophysics problem refers to a discrepancy between the detection of gravitational signals permeating the universe – which astrophysicists previously hypothesized had emanated from millions of merging pairs of supermassive black holes (SMBHs) – and theoretical simulations which showed that the approach of SMBHs stalls when they’re roughly one parsec (about three light years) apart.

Not only did the final parsec problem conflict with the theory that merging SMBHs were the source of the gravitational wave background, it was also at odds with the theory that SMBHs – each billions of times more massive than our Sun – grow from the merger of less massive black holes.

The new research, published in Physical Review Letters, has shown that pairs of SMBHs can indeed break through the one-parsec barrier and merge into a single black hole. This is demonstrated by calculations showing that SMBHs continue to draw closer because of previously overlooked interactions with particles within the vast cloud of dark matter surrounding them.

“We show that including the previously overlooked effect of dark matter can help supermassive black holes overcome this final parsec of separation and coalesce,” says Alonso-Álvarez, a post-doctoral fellow in the department of physics at U of T’s Faculty of Arts & Science and the department of physics and Trottier Space Institute at McGill University, who is first author on the paper. “Our calculations explain how that can occur, in contrast to what was previously thought.”

SMBHs are thought to lie in the centres of most galaxies. When two galaxies collide, the SMBHs fall into orbit around each other; as they revolve around each other, the gravitational pull of nearby stars tugs at them and slows them down, causing them to spiral inward toward a merger.

Previous merger models showed that when the SMBHs approached to within roughly a parsec, they begin to interact with the dark matter cloud or halo in which they are embedded. These models indicated that the gravity of spiraling SMBHs throws dark matter particles clear of the system.

The new model introduced by Alonso-Álvarez and co-authors James Cline, a professor at McGill University and the European Organization for Nuclear Research (CERN) in Switzerland, and Caitlyn Dewar, a graduate student at McGill, reveals that dark matter particles interact with each other in such a way that they are not dispersed. The density of the dark matter halo remains high enough that interactions between the particles and the SMBHs continue to degrade the SMBH’s orbits – clearing a path to a merger.

“The possibility that dark matter particles interact with each other is an assumption that we made, an extra ingredient that not all dark matter models contain,” says Alonso-Álvarez. “Our argument is that only models with that ingredient can solve the final parsec problem.”

The background hum generated by these colossal cosmic collisions is made up of gravitational waves of much longer wavelength than those first detected in 2015 by astrophysicists operating the Laser Interferometer Gravitational-Wave Observatory (LIGO).

Those gravitational waves were generated by the merger of two black holes, both some 30 times the mass of the Sun.

The background hum has been detected in recent years by scientists operating the Pulsar Timing Array. The array reveals gravitational waves by measuring minute variations in signals from pulsars, rapidly rotating neutron stars that emit strong radio pulses.

Originally published on https://www.utoronto.ca

COMING UP!!

(Wednesday, October 2nd, 2024)

"WHERE DID MARS' ATMOSPHERE GO??"

[snowberry-pie]

hii thank u for the tag ^-^ im not gonna lie my spotify has been largely relegated to asmr as of late but

1. Moon Girl Magic - Diamond White

2. How Did You Get So Good? - Live - D’lourdes

3. Birds Don’t Sing - TV Girl

4. Supermassive Black Hole - Muse

5. HOT TO GO! - Chappell Roan

@layalu @maleficarmage @goofsoup @bonavitaetgaudium @fandans :]

Tagged by @kuronobirthday to share 5 songs I have on repeat

Red Wine Supernova - Chappell Roan (the whole Midwest Princess album actually, but this is the one I've been listening to the most)

RATATATA - BABYMETAL and Electric Callboy

Too Sweet - Hozier

Magical Cure Love Shot! - SAWTOWNE

Inarticulation - Rio Romeo

Tagging (no pressure to do it!) @empanadasdehumita @chiifemme and anyone else that wants to participate, just act like I tagged you^^

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[spaceraceart]

I was looking at your project: geocentric, and I find it really cool! I was wondering if you had more on black holes. A bit terrifying to know the largest and most powerful cosmic entities are all-consuming eyes of darkness. Or maybe I'm just thinking about TON-618/Phoenix A (whichever's biggest lol) because Sagittarius A still looks like a funky dude :)

ooo thank you!! i haven't messed around with black holes in my story too much besides what i have for sagittarius a*, but i can talk some more about them hehe.

as you noted, sagittarius (or sag) is a bit more of a funky/goofy dude, which is a reference to how the actual black hole is fairly dormant! he's not spitting out jets or actively eating anything, he's just kind of sitting there in the middle of the milky way and having a good time.

(more stuff under readmore)

most galaxies will have a central super massive black hole (smbh) , and have some close relationship with them. for some, the smbh might torment their galaxy, especially if theyre super active and constantly blasting out radiation. but for others, like milky way and sag, they may have a romantic relationship. i designed black holes and galaxies around the same time, so their designs are meant to compliment each other. galaxies lack a mouth, whereas black holes are pretty much all mouth. this creates an interesting relationship, with smbhs acting as the mouth of their galaxy, often serving as their voice.

i haven't designed too many stellar-mass black holes, but they'd probably look similar to sag, maybe with less colors and much smaller. below is a stellar black hole (cygnus x-1) that i designed based off of tom cardy's H.S. song heheh. stellar mass black holes come from the most massive of stars dying violently in a supernova. while they often still hold the memories and personality from when they were a star, they get dramatically changed from their new connection to The Void.

at star death, black holes get exposed to The Void, the shadow of The Universe that represents dark matter, dark energy, and all that empty space in space. The Void allows for black holes to gain some sort of higher cosmic understanding of reality. this makes most black holes mysterious, hard to understand beings. The Void also gifts them many cosmic powers, such as the power to manipulate spacetime!

(this mirrors how galaxies and the largest of stars often have a connection to The Universe)

most black holes are able to manipulate their own size, appearing larger or smaller. many black holes are also able to almost teleport through space, either literally teleporting through worm holes of their own making, or traveling over light speeds. they can bend gravity like a limb, pulling and pushing on others around them. overall, scary fellas! super massive black holes will typically have some secondary power unrelated to spacetime manipulation as well, such as sag who can manipulate dreams.

but yeah, thats basically my current ideas for how black holes work. i need to try personifying some of the more "scary" black holes, such as TON-618 and all that, so I can really delve into what makes these things terrifying hehehe. thank you for the ask!