Abstract
This investigation shows that statistically there are significant time delays between Hα and hard X-ray (HXR) emissions during solar flares; most impulsive flares produce HXR emissions up to ∼1 min before and up to 2 min after the onset of Hα emission. HXR emissions are also found to be peaked up to 2 min before the Hα emissions.
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Verma, V.K., Pande, M.C. Time delay between Hα and hard X-ray emissions during impulsive solar flares. Sol Phys 97, 107–112 (1985). https://doi.org/10.1007/BF00152981
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DOI: https://doi.org/10.1007/BF00152981