Clustering and dynamic decoupling of dust grains in turbulent molecular clouds

@article{Mattsson2018ClusteringAD,
  title={Clustering and dynamic decoupling of dust grains in turbulent molecular clouds},
  author={Lars Mattsson and Akshay Bhatnagar and Frederick A. Gent and Beatriz Villarroel},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2018}
}
We present high-resolution (1024 3) simulations of super-/hypersonic isothermal hydrodynamic turbulence inside an interstellar molecular cloud (resolving scales of typically 20-100 au), including a ... 
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Small-scale clustering of nano-dust grains in turbulent interstellar molecular clouds
  • L. Mattsson
  • Physics
    Proceedings of the International Astronomical Union
  • 2018
Clustering and dynamics of nano-sized particles (nano dust) is investigated using high-resolution ($1024^3$) simulations of compressible isothermal hydrodynamic turbulence, intended to mimic the…
Dust Growth by Accretion of Molecules in Supersonic Interstellar Turbulence
We show that the growth rate of dust grains in cold molecular clouds is enhanced by the high degree of compressibility of a turbulent, dilute gas. By means of high resolution (10243) numerical…
Kinetics and Clustering of Dust Particles in Supersonic Turbulence with Self-gravity
We present a simulation of isothermal supersonic (rms Mach number $\mathcal{M}_{\rm rms} \sim 3$) turbulent gas with inertial particles (dust) and self-gravity in statistical steady-state, which we…
Small-scale clustering of nano-dust grains in supersonic turbulence
We investigate the clustering and dynamics of nano-sized particles (nano dust) in high-resolution (10243) simulations of compressible isothermal hydrodynamic turbulence. It is well established that…
Effects of the Compressibility of Turbulence on the Dust Coagulation Process in Protoplanetary Disks
Planetesimals are believed to be formed by the coagulation of dust grains in the protoplanetary disk turbulence. However, the bouncing and fragmentation barriers have not been completely solved,…
Coagulation of inertial particles in supersonic turbulence
Coagulation driven by supersonic turbulence is primarily an astrophysical problem because coagulation processes on Earth are normally associated with incompressible fluid flows at low Mach numbers,…
Galactic dust evolution with rapid dust formation in the interstellar medium due to hypersonic turbulence
  • L. Mattsson
  • Physics
    Monthly Notices of the Royal Astronomical Society
  • 2019
Turbulence can significantly accelerate the growth of dust grains by accretion of molecules. For dust dynamically coupled to the gas, the growth rate scales with the square of the Mach number,…
Dynamic role of dust in formation of molecular clouds
Dust is the usual minor component of the interstellar medium. Its dynamic role in the contraction of the diffuse gas into molecular clouds is commonly assumed to be negligible because of the small…
Bow shocks, bow waves, and dust waves – II. Beyond the rip point
Dust waves are a result of gas-grain decoupling in a stream of dusty plasma that flows past a luminous star. The radiation field is sufficiently strong to overcome the collisional coupling between…
On the grain-sized distribution of turbulent dust growth
It has recently been shown that turbulence in the interstellar medium (ISM) can significantly accelerate the growth of dust grains by accretion of molecules, but the turbulent gas-density…
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References

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Is the dust-to-gas ratio constant in molecular clouds?
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