Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 787, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/787/1/L13
Keywords
accretion, accretion disks; dynamo; magnetohydrodynamics (MHD); turbulence
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Funding
- National Science Foundation
- DEISA DECI grant
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We consider the problem of convergence in stratified isothermal shearing boxes with zero net magnetic flux. We present results with the highest resolution to date-up to 200 grid points per pressure scale height-that show no clear evidence of convergence. Rather, the Maxwell stresses continue to decrease with increasing resolution. We propose some possible scenarios to explain the lack of convergence based on multi-layer dynamo systems.
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