A comparison of the acoustic hardness of acoustically active and non-active solar flares

Diana Beşliu-Ionescu, Alina Donea, Paul Cally

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


Recent corrections to some of the GONG+ intensity images of flares allow us to image the acoustic power of white light flare signatures. The images clearly show compact regions of white light power at 6 mHz, which are well correlated spatially with the seismic signatures of the flares, when the flare proved to be acoustically active. It has been a puzzle why some of the white light flares, mainly very strong flares, did not induced any seismic waves into the photosphere. We believe that a comparison of the white light spectral hardness of two flares (one seismically active and another one seismically quiet) is the clue to understand the physics of the sun quakes.

Original languageEnglish
Title of host publicationExploring the Solar System and the Universe
Number of pages4
Publication statusPublished - 22 Oct 2008
EventExploring the Solar System and the Universe - Bucharest, Romania
Duration: 8 Apr 200812 Apr 2008


ConferenceExploring the Solar System and the Universe


  • Helioseismic holography
  • Sun quakes
  • White light

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