Solar Flare Must Watch

  1. davenn

    davenn 3,977
    Science Advisor
    Gold Member
    2014 Award

    Solar Flare Must Watch!!

    guys and gals

    if you haven't seen this video of solar flare yet, then hold onto your seats!!
    make sure you view it in full screen mode :smile:


    http://www.space.com/19873-blazing-arc-rains-fire-on-sun-magnetic-solar-flare-loop-video.html

    I have seen many flare videos over the years but the detail in this one is truly stunning
    the best I have ever seen

    unfortunately, due to no date given, I don't know when this video was taken

    cheers
    Dave
     
    1 person likes this.
  2. jcsd
  3. Drakkith

    Staff: Mentor

    That was awesome! Never ever seen one like that before!

    Edit: The flare occurred on July 19th, 2012.
     
  4. davenn

    davenn 3,977
    Science Advisor
    Gold Member
    2014 Award

    where did you read that date ? I must need new glasses


    edit: DUH right near the start
    ya know I had played that twice before and didn't see that

    definitely new glasses haha
     
  5. Drakkith

    Staff: Mentor

    And at the top of the article too.

    :tongue:
     
  6. Borg

    Borg 1,286
    Gold Member

    Nice. :smile:
     
  7. You might like to bookmark this site.. http://spaceweather.com/
    or find "NOAA NWS Space Weather Prediction Center" in your favorite social media network for information when not to trust your GPS or unplug your electronic device especially if you don't have surge protector, among other info.
     
  8. Dotini

    Dotini 766
    Gold Member

  9. Nice, you found the time machine of the site. The CME from July 19 eruption in the OP did not hit Earth, but July 12 eruption did.. Earthsky reported it too.. http://earthsky.org/space/auroras-widely-seen-july-14-chance-on-july-15-too
    and NASA.. http://www.nasa.gov/mission_pages/sunearth/news/News071212-X1.4flare.html
     
  10. davenn

    davenn 3,977
    Science Advisor
    Gold Member
    2014 Award

    been there for a good number of yrs :smile:
    I have been into solar activity since long before the internet existed
    Was routinely doing sunspot drawings and aurora observations from the early '70's


    Dave
     
  11. Nice to know that someone is interested in Heliophysics . And to feel at ease to mention an on-going research about Flux Transfer Event .

    I have reason why I was killjoy to some celestial art connoisseur in a discussion about aurora last year in other science site. It's history anyways and though my question in there was unanswered, the news about the recent launch of SWARM came to me as a consolation.
     
  12. My jaw literally dropped when I saw the Earth scale model! What's with that big bright flash between 3:33-36 at around 1'oclock...lightning? Does that even happen on the sun?
     
  13. davenn

    davenn 3,977
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    Gold Member
    2014 Award


    I had to play it a few times to catch what you were referring to
    hard to say what it was ... another brief bit of flaring or maybe an artefact with the digital imaging ??

    cheers
    Dave
     
  14. Drakkith

    Staff: Mentor

    I believe the movie was made by taking exposures over several hours, so the quick flash was probably an event several minutes long. Still not sure what it was though.
     
  15. Matterwave

    Matterwave 3,860
    Science Advisor
    Gold Member

    Are those pieces of plasma really going so fast as to move from the top of the flare to raining down on the sun in a matter of seconds, or am I seeing some kind of heat/shock wave? If those are the actual bulk motions of the plasma, then those particles appear to be traveling well in excess of 10,000km/s which is 1/30 c! o_O

    EDIT: Wait, Drakkith says it's a long exposure...so they aren't moving as fast as I thought...any estimates on the speeds then?
     
  16. Bandersnatch

    Bandersnatch 1,513
    Science Advisor
    Gold Member

    From what I've read, typical bulk motion of plasma in solar flares is in the vicinity of 150-300 km/s at the flare onset(in some cases as high as 1000km/s). Lower for long-lived flares. The velocities quickly decay to 30-60-ish km/s.

    Google "solar flare non-thermal plasma velocities" and you'll find some papers discussing the observations.
     
  17. Jonathan Scott

    Jonathan Scott 1,346
    Gold Member

    Does anyone know the approximate time compression factor involved in the NASA timelapse movies of solar flares?

    I'm guessing that stuff unfolds slowly over hours, whereas in sci-fi movies or even documentaries it happens in similar time to the timelapse movie!
     
  18. Astronuc

    Staff: Mentor

    "NASA's Solar Dynamics Observatory (SDO) and Solar and Heliospheric Observatory captured September 10th, 2014's X1.6-class flare and ensuing coronal mass ejection (CME)." http://www.space.com/27107-powerful-solar-x-flare-pointed-at-earth-video.html
    http://www.space.com/27126-solar-flares-northern-lights-displays.html
    Back-to-back solar flares prompt strong geomagnetic storm watch
    http://www.washingtonpost.com/blogs...lares-prompt-strong-geomagnetic-storm-watch/#

    Some pretty awesome images of the sun and it's flares.
    http://sdo.gsfc.nasa.gov/gallery/potw/
     
  19. Dotini

    Dotini 766
    Gold Member

    http://spaceweather.com/
    SOLAR STORM UPDATE: The first of two CMEs expected to hit Earth's magnetic field on Sept. 12th has arrived, and a minor (G1-class) geomagnetic storm is underway as a result of the impact. The second and potentially more powerful CME is still en route. NOAA forecasters say geomagnetic storming could become strong (G3-class) during the late hours of Sept. 12th and Sept 13th after the second CME arrives.

    The next CME, now only hours away, was launched by an X-class flare, so it is potent. However, not every potent CME produces a potent geomagnetic storm. It all depends on the inner magnetic architecture of the CME, which is unknown until the CME actually arrives. NOAA forecasters are estimating a 45% chance that strong magnetic disturbances will reach mid-latitudes on Sept 13--almost like a coin toss.
     
  20. Borg

    Borg 1,286
    Gold Member

  21. Greg Bernhardt

    Staff: Admin

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