Mohapatra, R and Federrath, C and Sharma, P (2022) Multiphase turbulence in galactic haloes: Effect of the driving. In: Monthly Notices of the Royal Astronomical Society, 514 (3). pp. 3139-3159.
Full text not available from this repository.Abstract
Supernova explosions, active galactic nuclei jets, galaxy-galaxy interactions, and cluster mergers can drive turbulence in the circumgalactic medium (CGM) and the intracluster medium (ICM). However, the exact nature of turbulence forced by these sources and its impact on the different statistical properties of the CGM/ICM and their global thermodynamics is still unclear. To investigate the effects of different types of forcing, we conduct high-resolution (10083 resolution elements) idealized hydrodynamic simulations with purely solenoidal (divergence-free) forcing, purely compressive (curl-free) forcing, and natural mixture forcing (equal fractions of the two components). The simulations also include radiative cooling. We study the impact of the three different forcing modes (sol, comp, and mix) on the morphology of the gas, its temperature and density distributions, sources and sinks of enstrophy, i.e. solenoidal motions, as well as the kinematics of hot (∼107 K) X-ray emitting and cold (∼104 K) H α emitting gas. We find that compressive forcing leads to stronger variations in density and temperature of the gas as compared to solenoidal forcing. The cold phase gas forms large-scale filamentary structures for compressive forcing and misty, small-scale clouds for solenoidal forcing. The cold phase gas has stronger large-scale velocities for compressive forcing. The natural mixture forcing shows kinematics and gas distributions intermediate between the two extremes, the cold-phase gas occurs as both large-scale filaments and small-scale misty clouds.
| Item Type: | Journal Article |
|---|---|
| Publication: | Monthly Notices of the Royal Astronomical Society |
| Publisher: | Oxford University Press |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | Active Galactic Nuclei; Density of gases; Dust; Gases; Kinematics; Numerical methods; Sols; Turbulence, Cold phasis; Forcings; Galaxies: clusters: intracluster mediums; Large-scales; Method: numerical; Multiphase turbulence; Natural mixtures; Phase gas; Small scale, Hydrodynamics |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 27 Jul 2022 11:24 |
| Last Modified: | 27 Jul 2022 11:24 |
| URI: | https://eprints.iisc.ac.in/id/eprint/74992 |
Actions (login required)
 |
View Item |
