Large kinetic power in FRII radio jets

Hirotaka Ito, Motoki Kino, Nozomu Kawakatu, Naoki Isobe, Shoichi Yamada

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    We investigate the total kinetic powers (L j) and ages (t age) of powerful jets of four FR II radio sources (Cygnus A, 3C 223, 3C 284, and 3C 219) by the detail comparison of the dynamical model of expanding cocoons with observed ones. It is found that these sources have quite large kinetic powers with the ratio of L j to the Eddington luminosity (L Edd) resides in 0.02<L j/L Edd<10. Reflecting the large kinetic powers, we also find that the total energy stored in the cocoon (E c) exceed the energy derived from the minimum energy condition (E min∈): 2<E c/E min∈<160. This implies that a large amount of kinetic power is carried by invisible components such as thermal leptons (electron and positron) and/or protons.

    Original languageEnglish
    Pages (from-to)335-339
    Number of pages5
    JournalAstrophysics and Space Science
    Volume311
    Issue number1-3
    DOIs
    Publication statusPublished - 2007 Oct

    Fingerprint

    radio
    kinetics
    cocoon
    energy
    leptons
    positrons
    luminosity
    electron
    protons
    electrons
    comparison

    Keywords

    • Radio galaxies: individual (Cygnus A, 3C 223, 3C 284, 3C 219)

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Large kinetic power in FRII radio jets. / Ito, Hirotaka; Kino, Motoki; Kawakatu, Nozomu; Isobe, Naoki; Yamada, Shoichi.

    In: Astrophysics and Space Science, Vol. 311, No. 1-3, 10.2007, p. 335-339.

    Research output: Contribution to journalArticle

    Ito, H, Kino, M, Kawakatu, N, Isobe, N & Yamada, S 2007, 'Large kinetic power in FRII radio jets', Astrophysics and Space Science, vol. 311, no. 1-3, pp. 335-339. https://doi.org/10.1007/s10509-007-9539-z
    Ito, Hirotaka ; Kino, Motoki ; Kawakatu, Nozomu ; Isobe, Naoki ; Yamada, Shoichi. / Large kinetic power in FRII radio jets. In: Astrophysics and Space Science. 2007 ; Vol. 311, No. 1-3. pp. 335-339.
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