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An exceptionally bright flare from SGR 1806–20 and the origins of short-duration γ-ray bursts
Open accessAbstract
Soft-γ-ray repeaters (SGRs) are galactic X-ray stars that emit numerous short-duration (about 0.1 s) bursts of hard X-rays during sporadic active periods. They are thought to be magnetars: strongly magnetized neutron stars with emissions powered by the dissipation of magnetic energy. Here we report the detection of a long (380 s) giant flare from SGR 1806–20, which was much more luminous than any previous transient event observed in our Galaxy. (In the first 0.2 s, the flare released as much energy as the Sun radiates in a quarter of a million years.) Its power can be explained by a catastrophic instability involving global crust failure and magnetic reconnection on a magnetar, with possible large-scale untwisting of magnetic field lines outside the star. From a great distance this event would appear to be a short-duration, hard-spectrum cosmic γ-ray burst. At least a significant fraction of the mysterious short-duration γ-ray bursts may therefore come from extragalactic magnetars.
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Cited by
A Population of Fast Radio Bursts at Cosmological Distances
Thornton, D., Stappers, B., Bailes, M., Barsdell, B., Bates, S., Bhat, N. D. R., Burgay, M., Burke-Spolaor, S., Champion, D. J., Coster, P., et al. (2013) · Science · doi:10.1126/science.1236789 · Cited by 1,042
Physics of strongly magnetized neutron stars
Harding, A. K., & Lai, D. (2006) · Reports on Progress in Physics · doi:10.1088/0034-4885/69/9/r03 · Cited by 823
Gamma-Ray Bursts in the Swift Era
Gehrels, N., Ramirez-Ruiz, E., & Fox, D. B. (2009) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.46.060407.145147 · Cited by 615
WHAT IS THE MOST PROMISING ELECTROMAGNETIC COUNTERPART OF A NEUTRON STAR BINARY MERGER?
Metzger, B. D., & Berger, E. (2012) · The Astrophysical Journal · doi:10.1088/0004-637x/746/1/48 · Cited by 521
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Metadata
- Authors
- Hurley, K., Boggs, S. E., Smith, D. M., Duncan, R. C., Lin, R., Zoglauer, A., Krucker, S., Hurford, G., Hudson, H., Wigger, C., Hajdas, W., Thompson, C., Mitrofanov, I., Sanin, A., Boynton, W., Fellows, C., von Kienlin, A., Lichti, G., Rau, A., & Cline, T.
- Venue
- Nature
- Published
- 2005-04
- Volume
- 434
- Issue
- 7037
- Pages
- 1098-1103
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W1534966610
- Cited by
- 597
- References
- 0
- FWCI
- 33.19
- Type
- journal article
- Language
- en
- Open access
- green
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- Hurley, K., Boggs, S. E., Smith, D. M., Duncan, R. C., Lin, R., Zoglauer, A., Krucker, S., Hurford, G., Hudson, H., Wigger, C., Hajdas, W., Thompson, C., Mitrofanov, I., Sanin, A., Boynton, W., Fellows, C., von Kienlin, A., Lichti, G., Rau, A., & Cline, T. (2005). An exceptionally bright flare from SGR 1806–20 and the origins of short-duration γ-ray bursts. Nature. https://doi.org/10.1038/nature03519
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