The Giant Flare From SGR 1806-20 And Its Radio Afterglow

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The multi-wavelength observations of the 2004 December 27 Giant Flare (GF) from SGR 1806-20 and its long-lived radio afterglow are briefly reviewed. The GF appears to have been produced by a dramatic reconfiguration of the magnetic field near the surface of the neutron star, possibly accompanied by fractures in the crust. The explosive release of over 10{sup 46} erg (isotropic equivalent) powered a one-sided mildly relativistic outflow. The outflow produced a new expanding radio nebula, that is still visible over a year after the GF. Also considered are the constraints on the total energy in the GF, the energy and ... continued below

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25 pages

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Taylor, G.B.; /New Mexico U. /NRAO, Socorro; Granot, J. & /KIPAC, Menlo Park September 26, 2006.

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The multi-wavelength observations of the 2004 December 27 Giant Flare (GF) from SGR 1806-20 and its long-lived radio afterglow are briefly reviewed. The GF appears to have been produced by a dramatic reconfiguration of the magnetic field near the surface of the neutron star, possibly accompanied by fractures in the crust. The explosive release of over 10{sup 46} erg (isotropic equivalent) powered a one-sided mildly relativistic outflow. The outflow produced a new expanding radio nebula, that is still visible over a year after the GF. Also considered are the constraints on the total energy in the GF, the energy and mass in the outflow, and on the external density, as well as possible implications for short {gamma}-ray bursts and potential signatures in high energy neutrinos, photons, or cosmic rays. Some possible future observations of this and other GFs are briefly discussed.

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25 pages

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  • Journal Name: Submitted to Mod.Phys.Lett.

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  • Report No.: SLAC-PUB-12134
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 892641
  • Archival Resource Key: ark:/67531/metadc875628

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 26, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 5, 2016, 6:24 p.m.

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Taylor, G.B.; /New Mexico U. /NRAO, Socorro; Granot, J. & /KIPAC, Menlo Park. The Giant Flare From SGR 1806-20 And Its Radio Afterglow, article, September 26, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc875628/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.