Fermi detection of the pulsar wind nebula HESS J1640-465

P. Slane, D. Castro, S. Funk, Y. Uchiyama, A. Lemiere, Joseph (Yosi) Gelfand, M. Lemoine-Goumard

    Research output: Contribution to journalArticle

    Abstract

    We present observations of HESS J1640-465 with the Fermi-Large Area Telescope. The source is detected with high confidence as an emitter of high-energy gamma-rays. The spectrum lacks any evidence for the characteristic cutoff associated with emission from pulsars, indicating that the emission arises primarily from the pulsar wind nebula (PWN). Broadband modeling implies an evolved nebula with a low magnetic field resulting in a high γ-ray to X-ray flux ratio. The Fermi emission exceeds predictions of the broadband model, and has a steeper spectrum, possibly resulting from a distinct excess of low energy electrons similar to what is inferred for both the Vela X and Crab PWNe.

    Original languageEnglish (US)
    Pages (from-to)266-271
    Number of pages6
    JournalAstrophysical Journal
    Volume720
    Issue number1
    DOIs
    StatePublished - Sep 1 2010

    Fingerprint

    nebulae
    pulsars
    broadband
    crabs
    energy
    crab
    confidence
    rays
    emitters
    cut-off
    gamma rays
    telescopes
    electron energy
    magnetic field
    electron
    prediction
    predictions
    magnetic fields
    modeling
    detection

    Keywords

    • Ism: individual objects (HESS J1640-465, FGL J1640.8-4634, 3EG J1639-4702, G338.3-0.0)
    • ISM: supernova remnants
    • Pulsars: general

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Slane, P., Castro, D., Funk, S., Uchiyama, Y., Lemiere, A., Gelfand, J. Y., & Lemoine-Goumard, M. (2010). Fermi detection of the pulsar wind nebula HESS J1640-465. Astrophysical Journal, 720(1), 266-271. https://doi.org/10.1088/0004-637X/720/1/266

    Fermi detection of the pulsar wind nebula HESS J1640-465. / Slane, P.; Castro, D.; Funk, S.; Uchiyama, Y.; Lemiere, A.; Gelfand, Joseph (Yosi); Lemoine-Goumard, M.

    In: Astrophysical Journal, Vol. 720, No. 1, 01.09.2010, p. 266-271.

    Research output: Contribution to journalArticle

    Slane, P, Castro, D, Funk, S, Uchiyama, Y, Lemiere, A, Gelfand, JY & Lemoine-Goumard, M 2010, 'Fermi detection of the pulsar wind nebula HESS J1640-465', Astrophysical Journal, vol. 720, no. 1, pp. 266-271. https://doi.org/10.1088/0004-637X/720/1/266
    Slane P, Castro D, Funk S, Uchiyama Y, Lemiere A, Gelfand JY et al. Fermi detection of the pulsar wind nebula HESS J1640-465. Astrophysical Journal. 2010 Sep 1;720(1):266-271. https://doi.org/10.1088/0004-637X/720/1/266
    Slane, P. ; Castro, D. ; Funk, S. ; Uchiyama, Y. ; Lemiere, A. ; Gelfand, Joseph (Yosi) ; Lemoine-Goumard, M. / Fermi detection of the pulsar wind nebula HESS J1640-465. In: Astrophysical Journal. 2010 ; Vol. 720, No. 1. pp. 266-271.
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