Halo CME captured by STEREO at high cadence

Дата публикации: 28-07-2023 00:00:00

On July 24, 2023, the SECCHI COR2 telescope aboard the STEREO-A spacecraft observed a large coronal mass ejection that completely surrounded the Sun. Such events are know as "halo" CMEs. CMEs appear as haloes either when they are heading directly toward the observer or directly away; in this case the CME happened on the far side of the Sun. STEREO-A is currently very close to Earth, so that means that the CME is also heading away from Earth. These images were made when the STEREO-A spacecraft was in a special high telemetry campaign, and the COR2 images were being taken at a much higher cadence than usual, which will allow this CME to be studied in great detail.

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