24 October

1
24 October 5 November 2003 Sky Map
Southward ejecta?
C2? image
LASCO C2 CME image to 6 Rs.
Southward ejecta?
SMEI enhanced Sky Map image and animation to 110º
elongation.
2
3D Reconstruction of 28 October CME
SMEI 3D reconstruction of the October 28 CME.
Earth is blue dot, Sun is red dot View from
3 AU 30º above ecliptic 45º west of Sun-Earth
line Densities are 10 30 e/cc with r-2
density gradient
3
2D and 3D Reconstruction of the 28 October CME
The SMEI 3D reconstruction of the 28 October 2003
CME is shown in two different PowerPoint slide
animations. In the first, the SMEI enhanced 2D
image and image sequence is shown as the
brightness of the sky would look from Earth. The
SMEI image to the right is plotted from 18º to
110º degrees elongation and shown to scale with
the LASCO image of the same event at an earlier
time (LASCO image enlarged to the left). The
SMEI still image shows the CME after its
Earthward-directed portion has engulfed Earth.
The SMEI image also shows the remnant of the
large arch-shaped structure observed in LASCO
that travels to the south and includes an Ha
prominence. Better views of this are available
in the animation where SMEI not only shows the
onset of the halo CME, but also the outward
progression, expansion and breakup until it
eventually fades in the distant heliosphere of
the large southward-moving arch-shaped structure.
In these 2D images a R-2 density brightness
gradient have been removed from the data in order
to better show the outward progression of the
event. Approximately the same time sequence is
viewed in 3D in the video on the second slide
from the same reconstruction. In this animation
the 28 October 2003 CME as viewed from 3AU 30º
above the ecliptic plane and 45º west of the
Sun-Earth line. The location of the Earth is
indicated by a blue circle with the Earths orbit
viewed in perspective drawn as an ellipse. The
Sun is indicated by a red dot. Densities are
shown and contoured between 10 30e-cm-3 and
have an r-2 density gradient removed from them.
The fast-moving structure to the solar northeast
as observed from Earth is the dominant object
here. The ejecta associated with the solar
prominence are observed to the south of the Sun
in these views. The total mass determined for
these structures inside the boundary defined by
the 10e-cm-3 contour level is 8 1016g and 9
1016 g respectively for the Earth-directed
density and the prominence-associated ejecta.