IMAGES OF SIGMOIDS -- CLICK TO ENLARGE
A sigmoid before an eruption. 8 June 1998 15:19 UT.
Solar X-ray image from the
Yohkoh Soft X-Ray
Telescope.
Acknowledgement
tif
movies
A sigmoid with a cusp, indicating an eruption has taken place.
9 June 1998 16:17 UT.
Solar X-ray image from the
Yohkoh Soft
X-Ray
Telescope.
Acknowledgement
tif
movies
A sigmoid before (left, 8 June 1998 15:19 UT) and after (right, with cusp,
9 June 1998 16:17 UT) an eruption has
taken place.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
Top: The northern hemisphere of the Sun, with two sigmoids.
15 May 1998 10:47 UT.
Bottom: A sigmoid before (left, 8 June 1998 15:19 UT)
and after (right, with cusp, 9 June 1998 16:17 UT) an eruption
has taken place.
Solar X-ray image from the
Yohkoh Soft
X-Ray Telescope.
Acknowledgement .
The Sun and sunspots as seen in visible light.
Acknowledgement .
Distribution of solar active regions in 1993 and 1997 (combined)
in three ranges of sunspot area.
Acknowledgement .
Collage showing the sequence from
pre-eruption sigmoid to post-eruption cusp/arcade.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
tif
Collage showing the sequence from
pre-eruption sigmoid to post-eruption cusp/arcade.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
tif
The Sun with a sigmoid present (lower left)
which produced a SOHO halo CME on the following day.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
The sigmoid just before the halo CME took place.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
The cusp and arcade just after the halo CME took place.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
An erupting prominence as photographed in the 304
Angstrom emission of helium on March 31, 1998.
The image shows the probable origins of twisted structures seen in
the CME shown in the
SOHO LASCO video and the motions shown in the EIT/SOHO movie of
a filament eruption associated with the 1997 October 23 halo CME
(animated gif).
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A sigmoid with a cusp, indicating an eruption has taken place.
9 June 1998 16:17 UT.
Solar X-ray image from the
Yohkoh Soft
X-Ray
Telescope.
Acknowledgement
tif
A sigmoid before (left, 8 June 1998 15:19 UT) and after (right, with cusp,
9 June 1998 16:17 UT) an eruption has
taken place.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
Top: The northern hemisphere of the Sun, with two sigmoids.
15 May 1998 10:47 UT.
Bottom: A sigmoid before (left, 8 June 1998 15:19 UT)
and after (right, with cusp, 9 June 1998 16:17 UT) an eruption
has taken place.
Solar X-ray image from the
Yohkoh Soft
X-Ray Telescope.
Acknowledgement .
The Sun and sunspots as seen in visible light.
Acknowledgement .
Distribution of solar active regions in 1993 and 1997 (combined)
in three ranges of sunspot area.
Acknowledgement .
Collage showing the sequence from
pre-eruption sigmoid to post-eruption cusp/arcade.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
tif
Collage showing the sequence from
pre-eruption sigmoid to post-eruption cusp/arcade.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
tif
The Sun with a sigmoid present (lower left)
which produced a SOHO halo CME on the following day.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
The sigmoid just before the halo CME took place.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
The cusp and arcade just after the halo CME took place.
Solar X-ray image from the
Yohkoh Soft X-Ray Telescope.
Acknowledgement .
An erupting prominence as photographed in the 304
Angstrom emission of helium on March 31, 1998.
The image shows the probable origins of twisted structures seen in
the CME shown in the
SOHO LASCO video and the motions shown in the EIT/SOHO movie of
a filament eruption associated with the 1997 October 23 halo CME
(animated gif).