by Ann » Mon Jun 06, 2022 3:17 am
AVAO wrote: ↑Sun Jun 05, 2022 7:17 pm
MarkBour wrote: ↑Sun Jun 05, 2022 6:34 pm
AVAO wrote: ↑Sun Jun 05, 2022 7:36 am
. . .
I'm not sure if the assumption "two supermassive black holes are bound together by gravity in a binary system" can be correct, because otherwise it would be expected that the two double tails of the black holes moving in the same direction would have to twist helically against each other... which is obviously not the case.
@AVAO: Thanks for the helpful notes and comments. However, I don't follow your claim that the jets must intertwine for the BHs to be gravitationally bound.
Maybe you are right. My consideration was that at least in the case of the tails, a tendency should be visible, which indicates mutual encircling circular movements. In other wavelengths, the tails are significantly larger than shown in the APOD. But also there no counter-rotating circular movement is visible.
https://live.staticflickr.com/65535/521 ... b155_k.jpg
Jac Berne (flickr)
I had the example of our solar system in mind. But this example may not apply to the case of 3C 75.
Solar system “vortex” gif (by DjSadhu)
Love that GIF, AVAO! I knew of the helical motion of the planets in the solar system as the Sun drags them along, of course, but the GIF looks stunning, anyway.
But surely there is a difference between a system of two black holes orbiting each other and planets orbiting the Sun? Yes, I know that technically the Sun is in orbit too, because it orbits the center of mass of the solar system, but the Sun holds some 99.9% of the solar system's mass, so I guess it barely wobbles. In the case of the two black holes, surely their combined mass must be more equally distributed, and their orbital motion should be different. Shouldn't it?
Maybe possibly maybe the orbit of the black holes could look something like this? Or no?
Click to play embedded YouTube video.
Ann
[quote=AVAO post_id=323195 time=1654456633 user_id=144694]
[quote=MarkBour post_id=323194 time=1654454062 user_id=141361]
[quote=AVAO post_id=323189 time=1654414570 user_id=144694]
. . .
I'm not sure if the assumption "two supermassive black holes are bound together by gravity in a binary system" can be correct, because otherwise it would be expected that the two double tails of the black holes moving in the same direction would have to twist helically against each other... which is obviously not the case.
[/quote]
@AVAO: Thanks for the helpful notes and comments. However, I don't follow your claim that the jets must intertwine for the BHs to be gravitationally bound.
[/quote]
Maybe you are right. My consideration was that at least in the case of the tails, a tendency should be visible, which indicates mutual encircling circular movements. In other wavelengths, the tails are significantly larger than shown in the APOD. But also there no counter-rotating circular movement is visible.
[img]https://live.staticflickr.com/65535/52123682999_4a81abddd3_z.jpg[/img]
[size=50][url]https://live.staticflickr.com/65535/52123682999_86aa28b155_k.jpg[/url]
Jac Berne (flickr)[/size]
I had the example of our solar system in mind. But this example may not apply to the case of 3C 75.
[img]https://www.universetoday.com/wp-content/uploads/2013/12/tumblr_mj0vvcqnZx1qdlh1io1_400.gif
[/img]
[size=50]Solar system “vortex” gif (by DjSadhu)[/size]
[/quote]
Love that GIF, AVAO! I knew of the helical motion of the planets in the solar system as the Sun drags them along, of course, but the GIF looks stunning, anyway.
But surely there is a difference between a system of two black holes orbiting each other and planets orbiting the Sun? Yes, I know that technically the Sun is in orbit too, because it orbits the center of mass of the solar system, but the Sun holds some 99.9% of the solar system's mass, so I guess it barely wobbles. In the case of the two black holes, surely their combined mass must be more equally distributed, and their orbital motion should be different. Shouldn't it?
Maybe possibly maybe the orbit of the black holes could look something like this? Or no?
[youtube]https://www.youtube.com/watch?v=erKViZx8Qsc[/youtube]
[clear][/clear]
Ann