Author Topic: Black hole sucking gas from a star - Black hole/thing (Read 25630 times)

vh · « **on:** June 23, 2011, 10:16:19 AM »

I was trying to recreate just some sort of black hole sucking gas from a star, and i ended up with this.
kinda reminds me of cygnus x-1.

1. make a black hole with small diameter
2. Add some rings
3. Add rigel, reduce mass to 0.1 suns
4. set particle multiplier to 25
5. turn rigel into dust
6. force orbit
7. watch the gas spiral and go into black hole
6. make new rigel with same mass (put on top of the "dust rigel")
7. Add earth on top and on bottom of sun
8. wait a little so they accelerate
9. turn earths into dust
10. they will create the jets (effect stops after 10 seconds or so
11. pause and take screenshots
12.

?
13. Profit!

oh, and high-res screenshots are like 0.6 mb above the attachment limit >.<

also, maybe we could get some sort of gas? would look better that particles floating around

that is all ^^

---

How To Videos

Part 1
Universe Sandbox 2011-06-25 06-47-18-16.wmv

Part 2
Universe Sandbox 2011-06-25 06-54-55-62.wmv

vh · « **Reply #1 on:** June 23, 2011, 10:17:39 AM »

Sorry, i couldn't fit this image into the last post because apparently, its 6.1mb max for all the file attachments combined.

Deathzilla7 · « **Reply #2 on:** June 23, 2011, 02:42:56 PM »

Nice!

vh · « **Reply #3 on:** June 23, 2011, 02:45:01 PM »

if only we could "liquify" an object or something, maybe just blur out the dust particles to make it look liquid? would that be possible?

Dan Dixon · « **Reply #4 on:** June 23, 2011, 05:12:12 PM »

Wow... that is super awesome.

atomic7732 · « **Reply #5 on:** June 23, 2011, 05:18:43 PM »

That's cool.

Quontex · « **Reply #6 on:** June 24, 2011, 12:28:00 AM »

*Spits out coffee*

Naru523 · « **Reply #7 on:** June 24, 2011, 12:34:18 AM »

My reaction.

Joshimitsu91 · « **Reply #8 on:** June 24, 2011, 08:14:01 AM »

Quote from: Dan Dixon on June 23, 2011, 05:12:12 PM

Wow... that is super awesome.

Second that!

Quontex · « **Reply #9 on:** June 24, 2011, 08:16:49 AM »

Wow.

Just wow.

dhm794 · « **Reply #10 on:** June 24, 2011, 09:34:49 AM »

Cool find. I'll make sure to try this out.

vh · « **Reply #11 on:** June 24, 2011, 10:12:01 AM »

I thought i'd just upload the file so you can all tweak and improve on it. The jets are extremely finicky so if you mess with the time step it might not work.

..lol each of my pictures takes up twice the amount of memory the actual simulation does

Deathzilla7 · « **Reply #12 on:** June 24, 2011, 11:30:57 AM »

Nice black hole sim! I just checked it! Epic!

Dan Dixon · « **Reply #13 on:** June 24, 2011, 03:10:31 PM »

The simulation file is great. Thanks again for sharing this with the community. If you're feeling motivated, a video showing how you created this would be really great.

Stevodoran · « **Reply #14 on:** June 24, 2011, 04:14:51 PM »

Thats pretty sweet. Well done!

Medevila · « **Reply #15 on:** June 24, 2011, 05:08:33 PM »

Looks awesome!

vh · « **Reply #16 on:** June 25, 2011, 04:34:22 AM »

Part 1
Universe Sandbox 2011-06-25 06-47-18-16.wmv

Part 2
Universe Sandbox 2011-06-25 06-54-55-62.wmv

Tell me if its confusing, ill add some annotations.
Should watch in 720 so you can see what i'm typing
Theres 2 parts because i had to pause and then come back. Windows movie maker was taking forever to combine so i ditched that.
Its different from the first time i did it.
And if you notice in the end, i forgot to make the star auto-orbit, its easily corrected though.
Also, the simulation falls apart when the spiral of gas gets close to the star and sucked in.
Yes i realize i hid the mouse by accident. Thanks for glowing buttons

funny how more people watched part 1 than part 2

neutronium76 · « **Reply #17 on:** June 27, 2011, 03:14:42 AM »

Hi! I have done something similar but I made 2 black holes: !st I made one black hole of 1M suns mass and started to put small stars (Alderamin and Bernard's star), sun-sized stars and jupiter-sized planets at circular orbit close to the 1st Black-Hole. Then I started to convert each star and planet into dust and waited until circular rings formed. Eventually it looked like a giant saturn with huge rings. Then I created another supermassive black hole of 900000 suns (i.e 90% of the mass of the 1st one) and placed it at a distance around 1AU and waited.. As the 2nd black hole started to approach the 1st, the tidal forces started to distort the rings around the 1st BH and amazing visuals occured.

I want to ask a question: How do you place an object above/below the orbit-plane? I tried to create the Jet effect that you created with 2 earths above and below the BH but I don't know how to place them above and below it.

Thanks for posting this! I will try to post some screenshots/video of my own so I share them with the community!

vh · « **Reply #18 on:** June 27, 2011, 10:04:56 AM »

To place an object above/below, hold down and drag

Joshimitsu91 · « **Reply #19 on:** June 27, 2011, 01:30:56 PM »

Quote from: mudkipz on June 27, 2011, 10:04:56 AM

To place an object above/below, hold down and drag

This. Or change the z-coordinates if accuracy is your thang.

vh · « **Reply #20 on:** June 27, 2011, 03:59:19 PM »

oh yeah, forgot, thats what i did. The earths need to be the same distance above and below the black hole so that the jets appear at the right time

neutronium76 · « **Reply #21 on:** June 28, 2011, 09:07:43 AM »

At what distance do you place the earths above and below the black hole?? Because I tried putting them at various distances (even up to 1AU) and they always end getting sucked by the BH. I usually turn them into dust at about 30-50 Million Km away from the Black Hole. There speed at that point is (if I remember correctly) about 0.0something light and about to hit 0.1 light.

vh · « **Reply #22 on:** June 28, 2011, 10:43:55 AM »

i think 5m km away? They don't need to be that fast. Also, how heavy is your black hole?

neutronium76 · « **Reply #23 on:** June 28, 2011, 11:36:42 AM »

234455 suns - it has a schwarchild radius equal to the radius of the sun. I thought that, in order for the jets to appear, they had to hit the BH at a speed close to the speed of light. I am probably wrong

vh · « **Reply #24 on:** June 28, 2011, 11:53:27 AM »

nope, jets don't have to be very fast.

Dan Dixon · « **Reply #25 on:** June 29, 2011, 12:10:56 PM »

Those videos are really informative. Thanks so much for posting them. The spiral effect is really cool. I didn't even realize you could do that.

dhm794 · « **Reply #26 on:** July 13, 2011, 02:37:35 PM »

Thanks a ton for the simulation file! This is a really cool discovery.

Darvince · « **Reply #27 on:** July 16, 2011, 12:22:11 AM »

That is cool. The earths should be colored white, imo.

vh · « **Reply #28 on:** July 16, 2011, 02:33:20 AM »

well maybe, but i chose the earths becuase they were blue lol. It may not be realistic, but it looks better imo

Chaotic Cow · « **Reply #29 on:** July 16, 2011, 10:35:29 AM »

Wow...that is awesome.