It's been interesting watching the various web SDRs the afternoon and seeing the HF bands go silent. They were recovering a short while ago but I will keep a corner of my eye on them for the rest of the day On 7 Sep 2017 5:57 pm, "jimlux" <jimlux@earthlink.net> wrote: > On 9/7/17 8:35 AM, David G. McGaw wrote: > >> No, the flare also produced a CME, which is expected to reach us >> tomorrow and may (hopefully?) trigger a G-3 class geomagnetic storm. >> >> http://www.spaceweather.com/archive.php?view=1&day=07&month=09&year=2017 >> >> > Oh ho, ANOTHER CME... why we're just seeing bunches of them > > > > David N1HAC >> Dartmouth College >> Dept. of Physics and Astronomy >> Space Physics Group >> (Yes, I am a rocket scientist.) >> >> >> On 9/7/17 10:47 AM, jimlux wrote: >> >>> On 9/6/17 2:46 PM, David G. McGaw wrote: >>> >>>> It also produced a CME. Read the note on spaceweather.com. >>>> >>>> David N1HAC >>>> >>>> >>>> On 9/6/17 5:19 PM, Alan Melia wrote: >>>> >>>>> The flare has been and gone!.......is this another case of journalists >>>>> mixing up a flare with a CME ? >>>>> Alan >>>>> G3NYK >>>>> >>>>> >>> >>> CME was earlier this week, whether it is connected to the subsequent >>> flare, or it's just coincidence is a question of heliophysics. >>> >>> This is somewhat poorly understood - in fact, in a few years (2021 - >>> NASA funding willing) we're going to put some satellites into orbit >>> above GEO to look at radio emissions (Type II radio bursts) from the >>> sun connected with CMEs. Time-nuts connection is that we're going to >>> be doing interferometry among the multiple satellites which means the >>> independent recordings have to be time synchronized for processing. >>> We're planning on using GPS satellites on the "other side" of the >>> earth, grazing the limb, and a suitably stable onboard oscillator. I >>> don't imagine I have to explain the general timing concept to this >>> particular crowd<grin>. >>> >>> The idea is that we can see more of the physics of the creation and >>> emission of the CME, and more importantly, *where* the changes are >>> occurring as the CME evolves. >>> >>> CMEs, as the name implies, occur in the corona. Flares are tied to >>> sunspots, and occur in the surface or deeper. Granted, both phenomena >>> are all tied up in twisting lines of magnetic fields, so there may be >>> some relationship among them. >>> >>> I'm just learning all this heliophysics stuff - all I have to do is >>> build, launch, and operate the satellites - Top women and men on the >>> science team will do the physics with the data. >>> >>> >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://na01.safelinks.protection.outlook.com/?url=https%3A% >>> 2F%2Fwww.febo.com%2Fcgi-bin%2Fmailman%2Flistinfo%2Ftime- >>> nuts&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7C29fc25 >>> adc4e648fec06808d4f5ff77c6%7C995b093648d640e5a31ebf689ec9446 >>> f%7C0%7C0%7C636403924970512922&sdata=wcElUzaYd7bT5zd1ASDbtga >>> FD%2F1Ar85hCfBv0piIMLY%3D&reserved=0 >>> >>> and follow the instructions there. >>> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. >

Mike Cook wrote: > When I saw the OP I did a quick check of my GPS receivers status. One of > them, a Jackson Labs M2M replacement (actually a U-blox M8T) had just reset > and gone to a 111ms offset. > Was that due to the CME? > No, not the CME. A CME is particles of matter traveling at non-relativistic speeds and usually takes a couple of days to reach earth. The initial effects of a solar flare include the arrival of X-rays (coincident with us seeing the flare), and those ionize the upper atmosphere and cause radio blackouts. That was what you saw the effects of. David G. McGaw wrote: > No, the flare also produced a CME, which is expected to reach us tomorrow > and may (hopefully?) trigger a G-3 class geomagnetic storm. > This one surprised us and arrived earlier today (Thursday), way ahead of schedule. It was quite energetic. It triggered a few instances of a G-4 (4 out of 5, "Severe") geomagnetic storm. Also Kp=8.3. Alas, I am unable to see any auroras yet. :-( Still hoping. Regards, Andy