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- W2002241915 abstract "The polarization and directivity of hard X-ray bremsstrahlung from a thermal source consisting of a region in which a thermal flux drives a pair of steel collisionless conduction fronts were evaluated. The conduction fronts are symmetrically driven from a central region, heated by the flare energy dissipation process. By comparing results with similar calculations based on a nonthermal thick-target electron beam model of the source, it was aimed to determine the degree to which the observed polarization and directivity of solar flare hard X-rays favor either model. Results which exhibit significant polarization and directivity of the hard X-ray radiation emitted by the source are produced by using Maxwellian electron-phase-space distribution functions modified to take into account a directional heat flux and a steady direct current in the X-ray source, and a fully relativistic treatment of the bremsstrahlung emission process. The results are consistent with solar hard X-ray anisotropy and polarization observations to date, although these observations are too crude to be conclusive." @default.
- W2002241915 created "2016-06-24" @default.
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- W2002241915 date "1980-05-01" @default.
- W2002241915 modified "2023-09-28" @default.
- W2002241915 title "The polarization and directivity of solar-flare hard X-ray bremsstrahlung from a thermal source" @default.
- W2002241915 doi "https://doi.org/10.1086/157947" @default.
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