×
Well done. You've clicked the tower. This would actually achieve something if you had logged in first. Use the key for that. The name takes you home. This is where all the applicables sit. And you can't apply any changes to my site unless you are logged in.

Our policy is best summarized as "we don't care about _you_, we care about _them_", no emails, so no forgetting your password. You have no rights. It's like you don't even exist. If you publish material, I reserve the right to remove it, or use it myself.

Don't impersonate. Don't name someone involuntarily. You can lose everything if you cross the line, and no, I won't cancel your automatic payments first, so you'll have to do it the hard way. See how serious this sounds? That's how serious you're meant to take these.

×
Register


Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only.
  • Your password can’t be too similar to your other personal information.
  • Your password must contain at least 8 characters.
  • Your password can’t be a commonly used password.
  • Your password can’t be entirely numeric.

Enter the same password as before, for verification.
Login

Grow A Dic
Define A Word
Make Space
Set Task
Mark Post
Apply Votestyle
Create Votes
(From: saved spaces)
Exclude Votes
Apply Dic
Exclude Dic

Click here to flash read.

We use high-resolution zoom-in cosmological simulations to model outflow
triggered by radiation and thermal drivers around the central mass accumulation
during direct collapse within the dark matter (DM) halo. The maximal resolution
is $1.3\times 10^{-5}$\,pc, and no restrictions are put on the geometry of the
inflow/outflow. The central mass is considered {\it prior} to the formation of
the supermassive black hole seed at a redshift of $z\sim 15.9$, and can
constitute either a supermassive star (SMS) of $\sim 10^5\,M_\odot$ surrounded
by a growing accretion disk or a self-gravitating disk. The radiation transfer
is modeled using the ray-tracing algorithm. Due to the high accretion rate of
$\sim 1\,M_\odot\,{\rm yr^{-1}}$ determined by the DM halo, accretion is mildly
supercritical, resulting in mildly super-critical luminosity which has only a
limited effect on the accretion rate, with the duty cycle of $\sim 0.9$. We
observe a fast development of hot cavities, which quickly extend into polar
funnels and expand dense shells. Within the funnels, fast winds, $\sim
10^3\,{\rm km\,s^{-1}}$, are mass-loaded by the accreting gas. We follow the
expanding shells to $\sim 1$\,pc, when the shell velocity remains
substantially, $\sim 5$ times, above the escape speed. The ionization cones
formed by the central UV/X-ray completely ionize the cavities. Extrapolating
the outflow properties shows that the halo material outside the shell will have
difficulty stopping it. We therefore conclude that the expanding wind-driven
shell will break out of the central parsec and will reach the halo virial
radius. Finally, the anisotropic accretion flow on sub-parsec scales will
attenuate the UV/soft X-rays on the H$_2$. Hence, the formation of funnels and
powerful outflows around, e.g., SMS, can have interesting observational
corollaries.

Click here to read this post out
ID: 426373; Unique Viewers: 0
Unique Voters: 0
Total Votes: 0
Votes:
Latest Change: Sept. 26, 2023, 7:30 a.m. Changes:
Dictionaries:
Words:
Spaces:
Views: 10
CC:
No creative common's license
Comments: