Low, M.-M.M., Klessen, R.S., Burkert, A., Smith, M.D. (1998) Kinetic energy decay rates of supersonic and super-alfvénic turbulence in star-forming clouds. Physical Review Letters: Moving Physics Forward, 80 (13). pp. 2754-2757. ISSN 0031-9007. (doi:10.1103/PhysRevLett.80.2754) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:50143)
| The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. | |
| Official URL: http://dx.doi.org/10.1103/PhysRevLett.80.2754 |
Abstract
We compute 3D models of supersonic, sub-Alfvénic, and super-Alfvénic decaying turbulence, with an isothermal equation of state appropriate for star-forming interstellar clouds of molecular gas. We find that in 3D the kinetic energy decays as t-?, with 0.85 < ? < 1.2. In ID magnetized turbulence actually decays faster than unmagnetized turbulence. We compared different algorithms, and performed resolution studies reaching 2563 zones or 703 particles. External driving must produce the observed long lifetimes and supersonic motions in molecular clouds, as undriven turbulence decays too fast.
| Item Type: | Article |
|---|---|
| DOI/Identification number: | 10.1103/PhysRevLett.80.2754 |
| Subjects: | Q Science > QB Astronomy > QB460 Astrophysics |
| Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
| Depositing User: | Giles Tarver |
| Date Deposited: | 11 Aug 2015 10:23 UTC |
| Last Modified: | 05 Nov 2024 10:35 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/50143 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Smith, M.D..
| Creator's ORCID: |
 https://orcid.org/0000-0002-4289-5952
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