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Post by af4ex on Feb 16, 2011 12:18:36 GMT
AR11158 was still very active last night, two big flares at 0140Z and 0550Z. AR11161 is also a big gun now, with an M1.1 flare at 0744Z, but the Nobeyama radioheliograph was sleeping by that time. (It only has an 8-hour window, in Japan, from 1050Z to 0620Z) Attachments:
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Post by davidwild on Feb 16, 2011 14:36:27 GMT
Another M class flare at about 14.40, looks like this one might be from 1161?
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Post by af4ex on Feb 16, 2011 14:48:36 GMT
Another M class flare at about 14.40, looks like this one might be from 1161? No, it was 1158. Attachments:
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Post by lsvalgaard on Feb 16, 2011 15:08:20 GMT
Yes, the region has now rotated enough to the west that we are beginning to be in magnetic field lines connected back to the site. Hi Leif, could you explain this further for us novices? Is the proton-flux that vukcevich is showing similar to this? www.swpc.noaa.gov/ace/Epam_7d.gifAnd is this proton-activity somehow connected with the flares/CMEs we just had? BB  Large flares spew out high-energy particles, protons and electron. These travel much faster than the solar wind so get here in hours rather than days. The particles spiral around magnetic field lines and for us to observe them requires that there is a field line connecting Sun and Earth. Such there are. Because of solar rotation the field [but not the solar wind] has the shape of a spiral and we are generally connected to a point 45 degrees west of central meridian. |
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Post by rangertab1 on Feb 16, 2011 16:02:59 GMT
Thanks jcarels. Another listing linked below: www.spaceweather.com/solarflares/topflares.htmlOne of the X Flares from SC23 ejected matter towards us at a relativistic rate of speed (under 20 minutes). After this blast of particles, IIRC, We The People began trying to understand how this happened and how safe are our astronauts should it occur in SC24. Any discussion about this would be much appreciated. Perhaps we should start a Flare thread. Yes? |
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bigbud
Level 3 Rank
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Post by bigbud on Feb 16, 2011 16:39:50 GMT
thank you Leif, nice with some new knowledge |
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Post by af4ex on Feb 16, 2011 19:35:37 GMT
Not completely obvious from the active region count, but the SFI appears to be going up slightly. The 9AM (1700Z) Penticton reading: 115 sfu Penticton 1700Z, 2000Z, 2300Z: 2011 Feb 7 2800 82 82 82 2011 Feb 8 2800 91 90 91 2011 Feb 9 2800 90 89 88 2011 Feb 10 2800 91 91 90 2011 Feb 11 2800 92 91 91 2011 Feb 12 2800 95 96 97 2011 Feb 13 2800 126 107 104 2011 Feb 14 2800 114 113 110 2011 Feb 15 2800 112 113 111 2011 Feb 16 2800 115 [114 113] I don't think there were any flares in progress at the time. (seems to be one starting as I speak though) Attachments:
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Post by davidwild on Feb 16, 2011 20:05:53 GMT
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Post by france on Feb 16, 2011 21:44:53 GMT
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Post by Bob k6tr on Feb 17, 2011 3:41:00 GMT
All regions lost spots today. Region 1159 became a spotless plague,
Sunspot count.......50 Down
SFI.....................113 Up
EVE 304A.............215 Steady
Solarstormwatch issued this report 14 hours ago:
solarstormwatchSolar Stormwatch
Solarstorm expected at Earth Orbit 04:22 18 February UT, Glancing Blow 26
degrees behind
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Post by lsvalgaard on Feb 17, 2011 3:54:44 GMT
All regions lost spots today. Region 1159 became a spotless plague, Sunspot count.......50 Down SFI.....................113 Up EVE 304A.............215 Steady Solarstormwatch issued this report 14 hours ago: solarstormwatchSolar Stormwatch Solarstorm expected at Earth Orbit 04:22 18 February UT, Glancing Blow 26 degrees behind from Marc deRosa: www.youtube.com/watch?v=IJViaJ_kgZ0&feature=player_embedded |
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Post by Bob k6tr on Feb 17, 2011 4:49:02 GMT
Good Stuff Leif
It looks like the smaller flares kicked out more material than the big one.
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Feb 17, 2011 6:24:41 GMT
It is unbelieveably hot on the front side, showing lots of activity, but STEREO Behind is pretty quiet. Is it normal to have one hemisphere much more active than another?
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Post by lsvalgaard on Feb 17, 2011 6:51:51 GMT
It is unbelieveably hot on the front side, showing lots of activity, but STEREO Behind is pretty quiet. Is it normal to have one hemisphere much more active than another? yes, at least it is common. |
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Feb 17, 2011 6:56:24 GMT
Dr. Svalgaard-
Just watched that wonderful SDO youtube movie the current CME's. Is what I am seeing correct or known, namely it looks to me like a region of white polarity (positive?) got isolated from the large positive regions and instead was "stuck" in a region of negative polarity and that small region was responsible for much of the activity. Is that just wrong or it is sensible? It might make sense as a small area of one polarity near a big one of another might make magnetic field lines interaction more common...
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