Zobrazeno 1 - 10
of 2 246
pro vyhledávání: '"COLD FLOWS"'
Autor:
Latif, Muhammad A., Whalen, Daniel J., Khochfar, Sadegh, Herrington, Nicholas P., Woods, Tyrone E.
How quasars powered by supermassive black holes (SMBHs) formed less than a billion years after the Big Bang is still one of the outstanding problems in astrophysics 20 years after their discovery$^{1-4}$. Cosmological simulations suggest that rare co
Externí odkaz:
http://arxiv.org/abs/2207.05093
Autor:
Goerdt, Tobias, Ceverino, Daniel
Publikováno v:
Mon. Not. Roy. Astron. Soc. 450 (2015) 3359 - 3370
We study the velocities of the accretion along streams from the cosmic web into massive galaxies at high redshift with the help of three different suites of AMR hydrodynamical cosmological simulations. The results are compared to free-fall velocities
Externí odkaz:
http://arxiv.org/abs/1501.06913
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2014, 442 (1): 732-740
We examine gas accretion and subsequent star formation in representative galaxies from the McMaster Unbiased Galaxy Simulations (Stinson et al. 2010). Accreted gas is bimodal with a natural temperature division at $10^5$ K, near the peak of the cooli
Externí odkaz:
http://arxiv.org/abs/1407.5639
Autor:
Powell, Leila C., Bournaud, Frederic, Chapon, Damien, Devriendt, Julien, Slyz, Adrianne, Teyssier, Romain
Two of the dominant channels for galaxy mass assembly are cold flows (cold gas supplied via the filaments of the cosmic web) and mergers. How these processes combine in a cosmological setting, at both low and high redshift, to produce the whole zoo o
Externí odkaz:
http://arxiv.org/abs/1102.4195
We use zoom-in techniques to re-simulate three high-redshift (z > 5.5) halos which host 10^9 solar mass blackholes from the ~ Gpc volume, MassiveBlack cosmological hydrodynamic simulation. We examine a number of factors potentially affecting supermas
Externí odkaz:
http://arxiv.org/abs/1312.1391
Autor:
Dubois, Yohan, Pichon, Christophe, Devriendt, Julien, Silk, Joseph, Haehnelt, Martin, Kimm, Taysun, Slyz, Adrianne
Supermassive black holes (BH) are powerful sources of energy that are already in place at very early epochs of the Universe (by z=6). Using hydrodynamical simulations of the formation of a massive M_vir=5 10^11 M_sun halo by z=6 (the most massive pro
Externí odkaz:
http://arxiv.org/abs/1206.5838
Publikováno v:
Astrophys.J.694:396-410,2009
We use high resolution cosmological hydrodynamical simulations to demonstrate that cold flow gas accretion, particularly along filaments, modifies the standard picture of gas accretion and cooling onto galaxy disks. In the standard picture, all gas i
Externí odkaz:
http://arxiv.org/abs/0812.0007
Autor:
Di Matteo, Tiziana, Khandai, Nishikanta, DeGraf, Colin, Feng, Yu, Croft, Rupert, Lopez, Julio, Springel, Volker
Observations of the most distant bright quasars imply that billion solar mass supermassive black holes (SMBH) have to be assembled within the first eight hundred million years. Under our standard galaxy formation scenario such fast growth implies lar
Externí odkaz:
http://arxiv.org/abs/1107.1253
We show that the "cold" Hubble flow observed for galaxies around the Milky Way does not represent a problem in cosmology but is due to the particular geometry and dynamics of our local wall. The behavior of the perturbed Hubble flow around the Milky
Externí odkaz:
http://arxiv.org/abs/1103.1901
[Abridged] Cold gas flowing within the "cosmic web" is believed to be an important source of fuel for star formation at high redshift. However, the presence of such filamentary gas has never been observationally confirmed. In this work, we investigat
Externí odkaz:
http://arxiv.org/abs/1012.0059