X-ray flares and radio (microwave) bursts associated with the optical Hyder flare, are also generally long lived phenomenon and are classified as the gradual rise and fall type of event (in contrast to the impulsive and complex events associated with large active region flares).
Generally Hyder flares are not associated with energetic particle emission or geomagnetic storms (implying that they may not be associated with a coronal mass ejection). However, this is not always the case, as a large halo CME observed by the LASCO solar coronagraph on board the SOHO spacecraft was most definitely associated with a Hyder flare (2N/M1) observed on 12 September 2000. This same complex also appeared to have produced energetic protons at geosynchronous orbit with energies in excess of 100 MeV, and in substantial numbers at energies of 10 MeV. It is believed that the sudden storm commencement observed at 0450UT 15 September, and the subsequent minor geomagnetic storm was produced by this particular CME.
Hyder's explanation of the flare type now named after him depended on the observational evidence that (1) often the flare was a parallel ribbon flare with one ribbon each side of the filament channel, and (2) that geomagnetic storms were not associated with these flares. This led to the speculation that the filamentary material was not ejected far into the corona, but in fact fell back to the chromosphere producing the flare.
Of late, the Hyder mechanism has come into question. Some people (notably Zirin) have questioned whether infall occurs, stating that the magnetic reconfiguration must always produce ejection. The respective roles of flares and CME's in solar active processes has also been hotly debated, and this has implications for the exact mechanism of Hyder flares. We certainly have enough observational evidence to show that Hyder flares can be associated with both CME's and energetic particle production. For the moment, the question of Hyder flare production mechanism appears unresolved, and will probably be sidelined until the more significant (and undoubtedly related) issue of CME - flare production mechanism is sorted out.
The bottom line is that at this stage in solar physics we do not really know what produces a flare nor what produces a CME. There are competing theories, but all tend to have deficiencies with respect to matching the observational evidence. We certainly believe that they all depend on the reconfiguration of magnetic fields as their primary energy source, but in the final analysis, we really only believe this because we can conceive of no other solar energy source of sufficient magnitude.
Originally posted by bladebosq
Hmmm... after Elenin, YU55 and then 11/11/11 i thought "Yeah! No more doomsday threads!"... boy was i wrong. But then i realized they have to exist to keep us on our toes, keep us alert and ready for the destruction of the world as we know it! (/end sarcasm). Fear mongering at its finest.
Getting really hard to find something good on ATS between all those OWS and Doomsday threads.
Ahh...I remember a time on ATS where you'd find well constructed ufo threads at least once a week, threads on conspiracies that didn't make outrageous claims with no evidence to back up, some of the most interesting things about cryptozoology.... unfortunately this is getting so rare these days. All you see is "OWS this", "End of the World that", etc. I'm not saying these things shouldn't be discussed, it's just the manner in which they are discussed is getting pretty annoying. (/end rant)
Well back to Skyrim, hope all those bad EM waves don't fry my PC!
TextThis gigantic prominence graced the Southeastern rim today in its relentless march towards the Earth facing side of the Sun. Solar forums all over the world were buzzing with Sun-stronomers proclaiming that it was the biggest prominence that many of them had ever witnessed. This shot was taken at the Georgia Regional Astronomers Meeting at Agnes Scott College in Atlanta GA with a Lunt LS100 and an Imaging Source DMK21. The Earth was added for scale.
There haven't been any strong solar flares in days. Nevertheless, some impressive activity is underway on the sun. For one thing, an enormous wall of plasma is towering over the sun's southeastern horizon. Stephen Ramsden of Atlanta, Georgia, took this picture on Nov. 11th
Remarkably, though, this is not the biggest thing. A dark filament of magnetism is winding halfway around the entire sun
From end to end, it stretches more than a million km or about three times the distance between Earth and the Moon. If the filament becomes unstable, as solar filaments are prone to do, it could collapse and hit the stellar surface below, triggering a Hyder flare. No one can say if the eruption of such a sprawling structure would be Earth directed.
pls dont tell me you are only now aware of solar cycle 24
we have been warned by the major scientist around the globe now for years
For the past few days, astronomers around the world have been monitoring a dark filament of magnetism sprawled more than 1,000,000 kilometers across the face of the sun. Make that 750,000 km. On Nov. 14th the filament snapped and flung a fraction of itself into space. NASA's Solar Dynamics Observatory recorded the action:
The eruption hurled a cloud of plasma into space, but not toward Earth. The only effect on our planet would be to disappoint observers hoping for a longer filament
Meanwhile, a wall of plasma towering over the sun's SE limb is seething with activity and may be poised to erupt as well.
A magnetic prominence dancing along the sun's southeastern limb became unstable on Nov. 15th and slowly erupted. NASA's Solar Dynamics Observatory recorded the event, which unfolded over a period of thirteen hours
The eruption hurled a cloud of plasma (CME) toward Venus. According to a forecast track created by analysts at the Goddard Space Weather Lab, the cloud should reach the second planet on Nov. 17th. Venus has no global magnetic field to protect it from CMEs. The impact will likely strip a small amount of atmosphere from the planet's cloudtops.
It's one of the biggest things in the entire solar system. A dark filament of magnetism measuring more than 800,000 km from end to end is sprawled diagonally across the face of the sun.
If the filament becomes unstable, as solar filaments are prone to do, it could collapse and hit the stellar surface below, triggering a Hyder flare. Indeed, part of the filament already erupted on Nov. 16th, but Earth was not in the line of fire when the twisted lines of magnetism snapped. A similar event today would likely be geoeffective because of the filament's central location on the solar disk.