The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Density Fluctuations in MHD Turbulence: Spectra, Intermittency, and Topology
Open accessAbstract
We perform three-dimensional (3D) compressible MHD simulations over many dynamical times for an extended range of sonic and Alfvén Mach numbers and analyze the statistics of 3D density and 2D column density, which include probability distribution functions, spectra, skewness, kurtosis, She-Lévêque exponents, and genus. In order to establish the relation between the statistics of the observables, i.e., column densities, and the underlying 3D statistics of density, we analyze the effects of cloud boundaries. We define the parameter space for 3D measures to be recovered from column densities. In addition, we show that for subsonic turbulence the spectra of density fluctuations are consistent with k -7/3 in the case of a strong magnetic field and k -5/3 in the case of a weak magnetic field. For supersonic turbulence we confirm the earlier findings of the shallow spectra of density and Kolmogorov spectra of the logarithm of density. We find that the intermittencies of the density and velocity are very different.
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Citations
Cites
McKee, C. F., & Ostriker, J. P. (1977) · The Astrophysical Journal · doi:10.1086/155667 · Cited by 2,082 · cited 1×
“…of the ISM is expected to be different for models of the ISM in which most of the gas is in the hot phase with islands of other phases embedded within (see McKee & Ostriker 1977) and for models in which a substantial part of the volume is filled with cold and warm gas (see Cox & Smith 1974).”
Cited by
Federrath, C., Roman-Duval, J., Klessen, R. S., Schmidt, W., & Mac Low, M.-M. (2010) · Astronomy and Astrophysics · doi:10.1051/0004-6361/200912437 · Cited by 846
ON THE STAR FORMATION EFFICIENCY OF TURBULENT MAGNETIZED CLOUDS
Federrath, C., & Klessen, R. S. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/763/1/51 · Cited by 403
NUMERICAL TESTS OF FAST RECONNECTION IN WEAKLY STOCHASTIC MAGNETIC FIELDS
Kowal, G., Lazarian, A., Vishniac, E. T., & Otmianowska-Mazur, K. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/700/1/63 · Cited by 354
Self-citationKrumholz, M. R. (2014) · Physics Reports · doi:10.1016/j.physrep.2014.02.001 · Cited by 321
Metadata
- Authors
- Kowal, G., Lazarian, A., & Beresnyak, A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2007-03-20
- Volume
- 658
- Issue
- 1
- Pages
- 423-445
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2126464674
- Cited by
- 261
- References
- 1
- FWCI
- 6.44
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Kowal, G., Lazarian, A., & Beresnyak, A. (2007). Density Fluctuations in MHD Turbulence: Spectra, Intermittency, and Topology. The Astrophysical Journal. https://doi.org/10.1086/511515
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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