Momentum distribution in solar flare processes

H. S. Hudson*, L. Fletcher, G. H. Fisher, W. P. Abbett, A. Russell

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)


We discuss the consequences of momentum conservation in processes related to solar flares and coronal mass ejections (CMEs), in particular describing the relative importance of vertical impulses that could contribute to the excitation of seismic waves (‘sunquakes’). The initial impulse associated with the primary flare energy transport in the impulsive phase contains sufficient momentum, as do the impulses associated with the acceleration of the evaporation flow (the chromospheric shock) or the CME itself. We note that the deceleration of the evaporative flow, as coronal closed fields arrest it, will tend to produce an opposite impulse, reducing the energy coupling into the interior. The actual mechanism of the coupling remains unclear at present.

Original languageEnglish
Title of host publicationSolar Flare Magnetic Fields and Plasmas
Number of pages12
ISBN (Electronic)9781461437611
ISBN (Print)9781461437604
Publication statusPublished - 1 Jan 2012


  • Solar flare


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