The frequent occurrence of hard X-ray emission from the top of Ñaring loops was one of the discoveries by the Hard X-Ray Telescope on board the Japanese Y ohkoh satellite. In this paper we take a Ñare current-sheet geometry and show how the combined e †ect of magnetic Ðeld convergence and pitchangle scattering of nonthermal electrons injected at the top of the loop results in the generation of a looptop source with properties akin to those observed by Y ohkoh. We demonstrate that a looptop source can be produced in both impulsive and gradual phase loops. We further present a possible mechanism for the generation of high-temperature "" ridges ÏÏ in the loop legs.
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