Deceleration observed in the coronal mass ejection event of July 25, 1999

Deceleration observed in the coronal mass ejection event of July 25, 1999

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We present height-time diagrams of the halo coronal mass ejection observed on July 25th (1999) from the Large Angle and Spectroscopic Coronagraph (LASCO), on board of the Solar and Heliopheric Observatory (SOHO) able to observe the solar corona from 2 to 32 solar radii. We used a technique in which...

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Bibliographic Details
Main Authors: N. J. Schuch, F. L. Guarnieri, E. Echer, L. E. A. Vieira, A. L. C. de Gonzalez, W. D. Gonzalez, G. Stenborg, R. Schwenn, A. Dal Lago
Format: Article
Language:English
Published: Universidad Nacional Autónoma de México, Instituto de Geofísica 2004-10-01
Series:Geofísica Internacional
Subjects:
Coronal mass ejection
LASCO
SOHO
deceleration
image processing
height-time diagrams
Online Access:http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2004/01/dal%20lago.pdf
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Summary:We present height-time diagrams of the halo coronal mass ejection observed on July 25th (1999) from the Large Angle and Spectroscopic Coronagraph (LASCO), on board of the Solar and Heliopheric Observatory (SOHO) able to observe the solar corona from 2 to 32 solar radii. We used a technique in which the LASCO images are divided in angular slices and placed side by side at different observation times, thus producing height-time diagrams. We identify a small deceleration of the July 25th halo CME around the south pole of the sun.
ISSN:0016-7169

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