Turbulence and particle heating in advection-dominated accretion flows

Eliot Quataert, Andrei Gruzinov

    Research output: Contribution to journalArticle

    Abstract

    We extend and reconcile recent work on turbulence and particle heating in advection-dominated accretion flows. For approximately equipartition magnetic fields, the turbulence primarily heats the electrons. For weaker magnetic fields, the protons are primarily heated. The division between electron and proton heating occurs between β ∼ 5 and β ∼ 100 (β is the ratio of gas to magnetic pressure), depending on unknown details of how Alfvén waves are converted into whistlers on scales of the proton Larmor radius. We also discuss the possibility that magnetic reconnection could be a significant source of electron heating.

    Original languageEnglish (US)
    Pages (from-to)248-255
    Number of pages8
    JournalAstrophysical Journal
    Volume520
    Issue number1 PART 1
    StatePublished - Jul 20 1999

    Fingerprint

    advection
    turbulence
    accretion
    heating
    electron
    protons
    magnetic field
    whistlers
    Larmor radius
    electrons
    magnetic fields
    division
    heat
    gases
    gas
    particle

    Keywords

    • Accretion
    • Accretion disks
    • MHD
    • Plasmas
    • Turbulence

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    Quataert, E., & Gruzinov, A. (1999). Turbulence and particle heating in advection-dominated accretion flows. Astrophysical Journal, 520(1 PART 1), 248-255.

    Turbulence and particle heating in advection-dominated accretion flows. / Quataert, Eliot; Gruzinov, Andrei.

    In: Astrophysical Journal, Vol. 520, No. 1 PART 1, 20.07.1999, p. 248-255.

    Research output: Contribution to journalArticle

    Quataert, E & Gruzinov, A 1999, 'Turbulence and particle heating in advection-dominated accretion flows', Astrophysical Journal, vol. 520, no. 1 PART 1, pp. 248-255.
    Quataert E, Gruzinov A. Turbulence and particle heating in advection-dominated accretion flows. Astrophysical Journal. 1999 Jul 20;520(1 PART 1):248-255.
    Quataert, Eliot ; Gruzinov, Andrei. / Turbulence and particle heating in advection-dominated accretion flows. In: Astrophysical Journal. 1999 ; Vol. 520, No. 1 PART 1. pp. 248-255.
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