Starship Asterisk*

John Douma wrote: ↑Sun May 29, 2022 1:26 pm Hello,

I have never posted here before but I have been following the picture of the day for years. In simulation videos such as this one, I would get a lot more out of it if you replaced the music with a narration explaining what is happening when. It is difficult to correlate the paragraph below with the video.

I would be interested to know how others feel about this. My point of view comes from a desire to understand what I am watching but I can understand how others may see the video as a work of art and prefer the music.

Thanks,

John

EuropaVisitor wrote: ↑Sun May 29, 2022 3:38 pm

johnnydeep wrote: ↑Sun May 29, 2022 1:58 pm

The motion of cosmic gas in a small region of TNG50, color encoding velocity from at rest (black) to 1000 km/s (bright red and white). At early times, accretion and infall from the intergalactic medium coallesces in the centers of many small halos. Stellar feedback produces slow galactic winds which gradually push mass outwards, until several central blackholes become sufficiently massive to launch high-velocity outflows to large distance. Past redshift one, we switch to a view of the stellar distribution of this forming protocluster, revealing the process of the hierarchical assembly of structure and its signatures: stellar streams, shells, tidal tails, and merging galaxies. The binary coallesence of the two galactic nuclei occurs at z=0.15, sending spiral waves outwards into the ICL.

Does that mean the area which gas seems to be spurting out of (on the right starting at around z=1.8) is probably a black hole?

johnnydeep wrote: ↑Sun May 29, 2022 1:58 pm

The motion of cosmic gas in a small region of TNG50, color encoding velocity from at rest (black) to 1000 km/s (bright red and white). At early times, accretion and infall from the intergalactic medium coallesces in the centers of many small halos. Stellar feedback produces slow galactic winds which gradually push mass outwards, until several central blackholes become sufficiently massive to launch high-velocity outflows to large distance. Past redshift one, we switch to a view of the stellar distribution of this forming protocluster, revealing the process of the hierarchical assembly of structure and its signatures: stellar streams, shells, tidal tails, and merging galaxies. The binary coallesence of the two galactic nuclei occurs at z=0.15, sending spiral waves outwards into the ICL.

John Douma wrote: ↑Sun May 29, 2022 1:26 pm Hello,

I have never posted here before but I have been following the picture of the day for years. In simulation videos such as this one, I would get a lot more out of it if you replaced the music with a narration explaining what is happening when. It is difficult to correlate the paragraph below with the video.

I would be interested to know how others feel about this. My point of view comes from a desire to understand what I am watching but I can understand how others may see the video as a work of art and prefer the music.

Thanks,

John

The motion of cosmic gas in a small region of TNG50, color encoding velocity from at rest (black) to 1000 km/s (bright red and white). At early times, accretion and infall from the intergalactic medium coallesces in the centers of many small halos. Stellar feedback produces slow galactic winds which gradually push mass outwards, until several central blackholes become sufficiently massive to launch high-velocity outflows to large distance. Past redshift one, we switch to a view of the stellar distribution of this forming protocluster, revealing the process of the hierarchical assembly of structure and its signatures: stellar streams, shells, tidal tails, and merging galaxies. The binary coallesence of the two galactic nuclei occurs at z=0.15, sending spiral waves outwards into the ICL.