Extremely Rare CME

Posted: March 15, 2023 by oldbrew in News, solar system dynamics

Good job it went the ‘other’ way.


March 13, 2023: Something big just happened on the farside of the sun. During the early hours of March 13th, SOHO coronagraphs recorded a farside halo CME leaving the sun faster than 3000 km/s:

Because of its extreme speed, this CME is classified as “extremely rare,” a fast-mover that occurs only once every decade or so. A NASA model of the event shows the CME heading almost directly away from Earth. Good thing!

Although the CME was not Earth-directed, it has nevertheless touched our planet. See all the snowy dots and streaks in the coronagraph movie above? Those are energetic particles accelerated by shock waves in the CME. They create short-lived luminous speckles when they hit SOHO’s digital camera.

NOAA’s GOES-16 satellite has detected the particles reaching Earth–all from the CME’s backside. Imagine what a frontside blast would have been like. Earth’s magnetic field is funneling the particles toward the…

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  1. oldbrew says:

    Coronal mass ejections: What are they and how do they form?

    These colossal clouds of plasma can wreak havoc with power grids and satellites, but can also trigger stunning aurora displays.
    . . .
    “Larger CMEs can reach a size comprising nearly a quarter of the space between Earth and the sun by the time it reaches our planet”, said NOAA in a statement.


  2. P.A.Semi says:

    March 13th around 10 UTC there was a front-side CME also, a spectacular one…
    So the supposed particle back-scatter was rather from that…?


  3. oldbrew says:

    A ‘weak shockwave in all directions’…

  4. stpaulchuck says:

    we were getting periodic satellite TV dropouts for two days

  5. oldbrew says:

    16 March 23
    POLAR RADIO BLACKOUT IS SUBSIDING: Inside the Arctic Circle, shortwave radios are working again as a three-day blackout triggered by Monday’s extremely rare CME subsides. The blackout is called a “polar cap absorption event” or PCA. It was caused by energetic protons accelerated toward Earth by the CME. Those protons are now ebbing, so the normal propagation of shortwave radio signals can resume. CME alerts: SMS Text.

    CME IMPACT SPARKS NORTHERN *AND* SOUTHERN LIGHTS: A CME struck Earth’s magnetic field yesterday, March 15th. The impact was so strong, it sparked auroras over both ends of our planet.

    [pics of auroras]
    – – –
    Equinox is maximum aurora time.

  6. Jim says:

    A cme is not rare. But, one the size of that, out of all the launches that science does, they should send one into the ejecta of the sun’s cme and return the star stuff, to show that they are. Or at least report on one. A second idea, report on the similarities of a mini/ micro nova and a cme.

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