Supernova remnant KES 17

An efficient cosmic ray accelerator inside a molecular cloud

Joseph (Yosi) Gelfand, Daniel Castro, Patrick O. Slane, Tea Temim, John P. Hughes, Cara Rakowski

    Research output: Contribution to journalArticle

    Abstract

    The supernova remnant Kes 17 (SNR G304.6+0.1) is one of a few but growing number of remnants detected across the electromagnetic spectrum. In this paper, we analyze recent radio, X-ray, and γ-ray observations of this object, determining that efficient cosmic ray acceleration is required to explain its broadband non-thermal spectrum. These observations also suggest that Kes 17 is expanding inside a molecular cloud, though our determination of its age depends on whether thermal conduction or clump evaporation is primarily responsible for its center-filled thermal X-ray morphology. Evidence for efficient cosmic ray acceleration in Kes 17 supports recent theoretical work concluding that the strong magnetic field, turbulence, and clumpy nature of molecular clouds enhance cosmic ray production in supernova remnants. While additional observations are needed to confirm this interpretation, further study of Kes 17 is important for understanding how cosmic rays are accelerated in supernova remnants.

    Original languageEnglish (US)
    Article number148
    JournalAstrophysical Journal
    Volume777
    Issue number2
    DOIs
    StatePublished - Nov 10 2013

    Fingerprint

    supernova remnants
    molecular clouds
    cosmic ray
    cosmic rays
    accelerators
    electromagnetic spectra
    clumps
    rays
    x rays
    evaporation
    turbulence
    radio
    magnetic field
    broadband
    conduction
    magnetic fields

    Keywords

    • cosmic rays
    • gamma rays: ISM
    • ISM: individual objects (Kes 17)
    • ISM: supernova remnants
    • X-rays: individual (Kes 17)

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Gelfand, J. Y., Castro, D., Slane, P. O., Temim, T., Hughes, J. P., & Rakowski, C. (2013). Supernova remnant KES 17: An efficient cosmic ray accelerator inside a molecular cloud. Astrophysical Journal, 777(2), [148]. https://doi.org/10.1088/0004-637X/777/2/148

    Supernova remnant KES 17 : An efficient cosmic ray accelerator inside a molecular cloud. / Gelfand, Joseph (Yosi); Castro, Daniel; Slane, Patrick O.; Temim, Tea; Hughes, John P.; Rakowski, Cara.

    In: Astrophysical Journal, Vol. 777, No. 2, 148, 10.11.2013.

    Research output: Contribution to journalArticle

    Gelfand, JY, Castro, D, Slane, PO, Temim, T, Hughes, JP & Rakowski, C 2013, 'Supernova remnant KES 17: An efficient cosmic ray accelerator inside a molecular cloud', Astrophysical Journal, vol. 777, no. 2, 148. https://doi.org/10.1088/0004-637X/777/2/148
    Gelfand, Joseph (Yosi) ; Castro, Daniel ; Slane, Patrick O. ; Temim, Tea ; Hughes, John P. ; Rakowski, Cara. / Supernova remnant KES 17 : An efficient cosmic ray accelerator inside a molecular cloud. In: Astrophysical Journal. 2013 ; Vol. 777, No. 2.
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