A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability

Research output: Contribution to journal › Journal article › Research › peer-review

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A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability. / Pessah, Martin Elias; Chan, Chi-kwan; Psaltis, Dimitrios.

In: Physical Review Letters, Vol. 97, No. 22, 01.12.2006, p. 221103.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Pessah, ME, Chan, C & Psaltis, D 2006, 'A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability', Physical Review Letters, vol. 97, no. 22, pp. 221103. https://doi.org/10.1103/PhysRevLett.97.221103

APA

Pessah, M. E., Chan, C., & Psaltis, D. (2006). A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability. Physical Review Letters, 97(22), 221103. https://doi.org/10.1103/PhysRevLett.97.221103

Vancouver

Pessah ME, Chan C, Psaltis D. A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability. Physical Review Letters. 2006 Dec 1;97(22):221103. https://doi.org/10.1103/PhysRevLett.97.221103

Author

Pessah, Martin Elias ; Chan, Chi-kwan ; Psaltis, Dimitrios. / A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability. In: Physical Review Letters. 2006 ; Vol. 97, No. 22. pp. 221103.

Bibtex

@article{a8e17ec8d8cb485d8fc0c229f94fcd52,
title = "A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability",
abstract = "We develop a local model for the exponential growth and saturation of the Reynolds and Maxwell stresses in turbulent flows driven by the magnetorotational instability. We first derive equations that describe the effects of the instability on the growth and pumping of the stresses. We highlight the relevance of a new type of correlations that couples the dynamical evolution of the Reynolds and Maxwell stresses and plays a key role in developing and sustaining the magnetorotational turbulence. We then supplement these equations with a phenomenological description of the triple correlations that lead to a saturated turbulent state. We show that the steady-state limit of the model describes successfully the correlations among stresses found in numerical simulations of shearing boxes.",
keywords = "astro-ph",
author = "Pessah, {Martin Elias} and Chi-kwan Chan and Dimitrios Psaltis",
year = "2006",
month = dec,
day = "1",
doi = "10.1103/PhysRevLett.97.221103",
language = "English",
volume = "97",
pages = "221103",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "22",

}

RIS

TY - JOUR

T1 - A Local Model for Angular Momentum Transport in Accretion Disks Driven by the Magnetorotational Instability

AU - Pessah, Martin Elias

AU - Chan, Chi-kwan

AU - Psaltis, Dimitrios

PY - 2006/12/1

Y1 - 2006/12/1

N2 - We develop a local model for the exponential growth and saturation of the Reynolds and Maxwell stresses in turbulent flows driven by the magnetorotational instability. We first derive equations that describe the effects of the instability on the growth and pumping of the stresses. We highlight the relevance of a new type of correlations that couples the dynamical evolution of the Reynolds and Maxwell stresses and plays a key role in developing and sustaining the magnetorotational turbulence. We then supplement these equations with a phenomenological description of the triple correlations that lead to a saturated turbulent state. We show that the steady-state limit of the model describes successfully the correlations among stresses found in numerical simulations of shearing boxes.

AB - We develop a local model for the exponential growth and saturation of the Reynolds and Maxwell stresses in turbulent flows driven by the magnetorotational instability. We first derive equations that describe the effects of the instability on the growth and pumping of the stresses. We highlight the relevance of a new type of correlations that couples the dynamical evolution of the Reynolds and Maxwell stresses and plays a key role in developing and sustaining the magnetorotational turbulence. We then supplement these equations with a phenomenological description of the triple correlations that lead to a saturated turbulent state. We show that the steady-state limit of the model describes successfully the correlations among stresses found in numerical simulations of shearing boxes.

KW - astro-ph

U2 - 10.1103/PhysRevLett.97.221103

DO - 10.1103/PhysRevLett.97.221103

M3 - Journal article

C2 - 17155789

VL - 97

SP - 221103

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

ER -

ID: 34382705