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

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 in Journal/Newspaper
Language:English
Spanish
Published: Universidad Nacional Autónoma de México, Instituto de Geofísica 2004
Subjects:
Coronal mass ejection
LASCO
SOHO
deceleration
image processing
height-time diagrams
Geophysics. Cosmic physics
QC801-809
South Pole
South pole
Online Access:https://doaj.org/article/2d783614fa384e94a07eca6bb4378b9d
Description
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.

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