The proton distribution function in weakly magnetized turbulent plasmas

Andrei Gruzinov, Eliot Quataert

    Research output: Contribution to journalArticle

    Abstract

    We calculate the proton distribution function due to heating by subsonic, Alfvénic turbulence in a weakly magnetized collisionless plasma. The distribution function is nonthermal. For nonrelativistic energies it is an exponential of the magnitude of the proton velocity. For ultrarelativistic energies, it can be characterized as a power law with a momentum-dependent slope. We briefly discuss the implications of this work for gamma-ray emission (via pion decay) from hot accretion flows.

    Original languageEnglish (US)
    Pages (from-to)849-852
    Number of pages4
    JournalAstrophysical Journal
    Volume520
    Issue number2 PART 1
    StatePublished - Aug 1 1999

    Fingerprint

    distribution functions
    plasma
    collisionless plasmas
    protons
    energy
    momentum
    power law
    pions
    turbulence
    accretion
    gamma rays
    slopes
    heating
    decay
    distribution

    Keywords

    • MHD
    • Plasmas
    • Turbulence

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    Gruzinov, A., & Quataert, E. (1999). The proton distribution function in weakly magnetized turbulent plasmas. Astrophysical Journal, 520(2 PART 1), 849-852.

    The proton distribution function in weakly magnetized turbulent plasmas. / Gruzinov, Andrei; Quataert, Eliot.

    In: Astrophysical Journal, Vol. 520, No. 2 PART 1, 01.08.1999, p. 849-852.

    Research output: Contribution to journalArticle

    Gruzinov, A & Quataert, E 1999, 'The proton distribution function in weakly magnetized turbulent plasmas', Astrophysical Journal, vol. 520, no. 2 PART 1, pp. 849-852.
    Gruzinov, Andrei ; Quataert, Eliot. / The proton distribution function in weakly magnetized turbulent plasmas. In: Astrophysical Journal. 1999 ; Vol. 520, No. 2 PART 1. pp. 849-852.
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