An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20

B. M. Gaensler, C. Kouveliotou, Joseph (Yosi) Gelfand, G. B. Taylor, D. Eichler, R. A.M.J. Wijers, J. Granot, E. Ramirez-Ruiz, Y. E. Lyubarsky, R. W. Hunstead, D. Campbell-Wilson, A. J. Van Der Horst, M. A. McLaughlin, R. P. Fender, M. A. Garrett, K. J. Newton-McGee, D. M. Palmer, N. Gehrels, P. M. Woods

    Research output: Contribution to journalArticle

    Abstract

    Soft γ-ray repeaters (SGRs) are 'magnetars', a small class of slowly spinning neutron stars with extreme surface magnetic fields, B ≈ 10 15 gauss (refs 1-3). On 27 December 2004, a giant flare was detected from the magnetar SGR 1806-20 (ref. 2), only the third such event recorded. This burst of energy was detected by a variety of instruments and even caused an ionospheric disturbance in the Earth's upper atmosphere that was recorded around the globe. Here we report the detection of a fading radio afterglow produced by this outburst, with a luminosity 500 times larger than the only other detection of a similar source. From day 6 to day 19 after the flare from SGR 1806-20, a resolved, linearly polarized, radio nebula was seen, expanding at approximately a quarter of the speed of light. To create this nebula, at least 4 × 10 43 ergs of energy must have been emitted by the giant flare in the form of magnetic fields and relativistic particles.

    Original languageEnglish (US)
    Pages (from-to)1104-1106
    Number of pages3
    JournalNature
    Volume434
    Issue number7037
    DOIs
    StatePublished - Apr 28 2005

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    Magnetic Fields
    Radio
    Neutrons
    Atmosphere
    Light

    ASJC Scopus subject areas

    • General

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    Gaensler, B. M., Kouveliotou, C., Gelfand, J. Y., Taylor, G. B., Eichler, D., Wijers, R. A. M. J., ... Woods, P. M. (2005). An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20. Nature, 434(7037), 1104-1106. https://doi.org/10.1038/nature03498

    An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20. / Gaensler, B. M.; Kouveliotou, C.; Gelfand, Joseph (Yosi); Taylor, G. B.; Eichler, D.; Wijers, R. A.M.J.; Granot, J.; Ramirez-Ruiz, E.; Lyubarsky, Y. E.; Hunstead, R. W.; Campbell-Wilson, D.; Van Der Horst, A. J.; McLaughlin, M. A.; Fender, R. P.; Garrett, M. A.; Newton-McGee, K. J.; Palmer, D. M.; Gehrels, N.; Woods, P. M.

    In: Nature, Vol. 434, No. 7037, 28.04.2005, p. 1104-1106.

    Research output: Contribution to journalArticle

    Gaensler, BM, Kouveliotou, C, Gelfand, JY, Taylor, GB, Eichler, D, Wijers, RAMJ, Granot, J, Ramirez-Ruiz, E, Lyubarsky, YE, Hunstead, RW, Campbell-Wilson, D, Van Der Horst, AJ, McLaughlin, MA, Fender, RP, Garrett, MA, Newton-McGee, KJ, Palmer, DM, Gehrels, N & Woods, PM 2005, 'An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20', Nature, vol. 434, no. 7037, pp. 1104-1106. https://doi.org/10.1038/nature03498
    Gaensler BM, Kouveliotou C, Gelfand JY, Taylor GB, Eichler D, Wijers RAMJ et al. An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20. Nature. 2005 Apr 28;434(7037):1104-1106. https://doi.org/10.1038/nature03498
    Gaensler, B. M. ; Kouveliotou, C. ; Gelfand, Joseph (Yosi) ; Taylor, G. B. ; Eichler, D. ; Wijers, R. A.M.J. ; Granot, J. ; Ramirez-Ruiz, E. ; Lyubarsky, Y. E. ; Hunstead, R. W. ; Campbell-Wilson, D. ; Van Der Horst, A. J. ; McLaughlin, M. A. ; Fender, R. P. ; Garrett, M. A. ; Newton-McGee, K. J. ; Palmer, D. M. ; Gehrels, N. ; Woods, P. M. / An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20. In: Nature. 2005 ; Vol. 434, No. 7037. pp. 1104-1106.
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