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Post by af4ex on Mar 3, 2011 18:51:39 GMT
Bob/k6tr, Now I finally understand your avatar. It represents the SDO EUV Variability Experiment (EVE) (not a "hood ornament" or heraldry symbol). Also explains your interest in 304A and other EUV radiation! Tnx! John/af4ex Attachments:
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Post by sunspotboy on Mar 3, 2011 19:27:40 GMT
Dr Svalgaard,
The Northern Polarity Field of the sun changed...
Where can I find the time lapses before the Southern Field changes?
Months? More then a year?
Can't find it on the internet...
Thank you!
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Post by THEO BAKALEXIS on Mar 3, 2011 20:08:02 GMT
Two great regions on solar surface. 11164 and 11166 is fabulous. The sun full of new and old regions this time. www.solar-007.eu/site/ |
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Post by Kevin VE3EN on Mar 3, 2011 20:14:51 GMT
Solar Flux 121 at first reading today
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Post by w7psk on Mar 3, 2011 20:31:44 GMT
Solar Flux 121 at first reading today Yea listening to you on 10m via the live feed. Sounds great. Hope it stays open till I get home in about 2 hours. |
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Post by lsvalgaard on Mar 3, 2011 20:40:34 GMT
Dr Svalgaard, The Northern Polarity Field of the sun changed... Where can I find the time lapses before the Southern Field changes? Months? More then a year? Can't find it on the internet... Thank you! You can't find it, as you heard it first right here  Typically the time would be about a year, but it could happen next month. We don't know. You can follow the evolution here: wso.stanford.edu/Polar.html#latest |
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Post by france on Mar 3, 2011 22:27:09 GMT
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Post by lsvalgaard on Mar 4, 2011 1:00:04 GMT
The predicted value is the smoothed value for a whole year. We are not there yet. |
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Mar 4, 2011 6:51:55 GMT
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Post by Bob k6tr on Mar 4, 2011 6:56:36 GMT
We have a Solar Flux that has read above 100 for the first 4 days of the month. Today's reading of 121 is actually higher than last month's high of 125 which was contaminated by a flare. For the last several months one side of the Sun has been churning while the otherside is blank. What's even more interesting is the Northern Hemisphere has been very active while the Southern Hemisphere has sputterred repeatedly. Even when it looks like it's finally going to take-off it poops out. It is not unusual for the active hemisphere of the Sun to switch during the rise phase but there has been no indication of that thus far. I suspect that transition will occur during the peak which will be unusually broad because of the timing of this reversal. |
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Post by af4ex on Mar 4, 2011 11:48:47 GMT
bradk> In this pic from Germany it looks like 1164 is oriented diferently > on the face of the sun than it does in the SDO pics. Why? Because Germany has a rather tilted view of the Sun. :-] Attachments:
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Mar 4, 2011 11:58:09 GMT
af4ex-
That was my assumption, but not knowing I did not expect the tilt to be so pronounced. My expectation was that it would be closer to the axial tilt of the earth at 23.4 degrees, but I guess if you add in curvature it can get you here.
It could also be more pronounced because of atmospheric interference and the bending of light.
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Post by vukcevic on Mar 4, 2011 12:50:43 GMT
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Post by jcarels on Mar 4, 2011 13:02:40 GMT
af4ex- That was my assumption, but not knowing I did not expect the tilt to be so pronounced. My expectation was that it would be closer to the axial tilt of the earth at 23.4 degrees, but I guess if you add in curvature it can get you here. It could also be more pronounced because of atmospheric interference and the bending of light. Also because the sun was on the western horizon and not in the south. So the sun is tilted. |
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Mar 4, 2011 13:25:44 GMT
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