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P.K. Manoharan (Astronomy Department, University of Maryland; Physics Department, Catholic University of America), M.R. Kundu (Astronomy Department, University of Maryland)
We report the investigation of one of the coronal mass ejections unleashed by the largest active region, AR9393, of the current solar cycle. This mass ejection was associated with an X1.1 flare that occurred on April 2, 2001 at about 11 UT and also showed small effect in terms of energetic particle. The analysis of H-alpha images obtained from the Meudon spectroheliograph shows a fast eruption towards the north-west direction and wave-like propagation from the eruption site. The acceleration of the ejecta results in a speed of about 150-200 km/s close to the disk. The associated radio emission observed with the Nancay Radioheliograph in the frequency range 160-327 MHz shows radio emitting regions moving towards north with time and with increasing wavelength. The mass ejection observed with the coronagraphs on board LASCO/ SOHO is consistent with the eruption seen in the H-alpha. We discuss the formation and morphology of the ejection and its interplanetary consequences.
The author(s) of this abstract have provided an email address for comments about the abstract: mano@astro.umd.edu
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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.