Sun, Solar Flares and Coronal Mass Ejections … by Alice ..

Revised; originally published on 8 March 2015
Originally entitles “Sun, Solar Flares and CMEs”

  • Mechanics of a Coronal Mass Ejection (CME)
  • Eastern and Western Limb of the Sun

Dear Ones,

This morning I saw Suspicious Observer’s analysis of last night’s M9 solar flare, which produced a coronal mass ejection (CME) that he says is unlikely to impact Earth, because it happened on the Eastern Limb of the Sun.

MECHANICS OF A CORONAL MASS EJECTION (CME)

Notice, at .38 – 1.02 on the video how SO describes the mechanics of a CME, beginning with the phrase “What you should notice …” There he describes umbral field surges [smaller loops of energy above the ‘umbra’, the dark center of the sunspot), how they enhance magnetics of the upper coronal fields (the big loops of energy above the umbra). And ther resultant explosion and reconnection … something he calls ‘repopulation’ of magnetic fields.

Video: “M9 Solar Flare, U-Yen Storm, Tornado Risk \ SO News March 8, 2015,” by SuspiciousObservers: https://www.youtube.com/watch?v=-rnJbpfNKrA .. 

EASTERN AND WESTERN LIMB OF THE SUN

As I had not yet gotten the terminology right about the Sun, I looked up this helpful image and explanation:

Image: Sun, showing eastern limb on the left (E), western limb on the right (W), and rotation from left to right: http://www.eyes-on-the-skies.org/shs/spec-rot-gb_files/rotationdoppler.GIF ..

This article explains the limbs and the rotation, as displayed in the NOAA sun videos, very well:

Article: “Space Weather Forecast,” by B. Burress, Chabot Space and Science Center, 7/5/2007, http://clc.prairieaviationmuseum.org/clc/teachers/Space%20Weather%20Forecast.pdf … see the section named “East to West, or West to East,” page 12

See also the diagram of the sun’s orbit and the earth’s orbit on page 11

In love, light and joy,
I Am of the Stars
…………………..

Creative Commons License
Except where otherwise noted, this work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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astrogeophysics, CME, coronal mass ejection, eastern limb of sun, solar flare, sun, Suspicious Observers, western limb of sun,

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