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Post by justsomeguy on Sept 25, 2011 12:33:30 GMT
Good news, thanks!
In other L & P news, the flux per spot seems very high to me.
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Post by lsvalgaard on Sept 25, 2011 14:47:30 GMT
Good news, thanks! In other L & P news, the flux per spot seems very high to me. if you mean the F10.7 flux, then that will be enhanced because of the flaring activity. This enhancement is somewhat distinct from the general solar cycle increase, and will likely be much lower today.
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Post by maundalt on Sept 25, 2011 17:55:22 GMT
Leif- I can never wait for the next update, any idea when it is or if they had good viewing this month? Bill just had an observing run. I was with him. Give him a few days to reduce the data. Why does it need to be reduced? Are the numbers too high or something?
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Post by af4ex on Sept 25, 2011 18:36:42 GMT
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Post by lsvalgaard on Sept 26, 2011 4:42:42 GMT
Bill just had an observing run. I was with him. Give him a few days to reduce the data. Why does it need to be reduced? Are the numbers too high or something? It just means to be converted from 'raw' readings of voltages of the instrument to magnetic field units that we can relate to.
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Post by Bob k6tr on Sept 26, 2011 4:48:51 GMT
Why does it need to be reduced? Are the numbers too high or something? It just means to be converted from 'raw' readings of voltages of the instrument to magnetic field units that we can relate to. Did Bill Livingston comment or make any remarks regarding AR 11302 ?
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Post by lsvalgaard on Sept 26, 2011 16:23:44 GMT
It just means to be converted from 'raw' readings of voltages of the instrument to magnetic field units that we can relate to. Did Bill Livingston comment or make any remarks regarding AR 11302 ? It came around just as his observing slot ended, so he didn't get a reading. We must, however, remember that the L&P effect mostly affects the small spots. An occasional very large spot will still occur. Even during the Maunder Minimum there were such.
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Post by justsomeguy on Sept 27, 2011 6:16:26 GMT
Any theories, thoughts or papers on why we can still get the occasional large spot spot?
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Post by lsvalgaard on Sept 27, 2011 14:03:44 GMT
Any theories, thoughts or papers on why we can still get the occasional large spot spot? There is a lot of randomness in the formation of sunspots and there will be a high-value 'tail' in the distribution.
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Post by lsvalgaard on Oct 6, 2011 1:14:35 GMT
Any theories, thoughts or papers on why we can still get the occasional large spot spot? There is a lot of randomness in the formation of sunspots and there will be a high-value 'tail' in the distribution. Updated plot:
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Post by jcarels on Oct 6, 2011 12:47:40 GMT
I wonder why there were no weak sunspots detected before 2006. There have always been weak sunspots (pores), that were just visible. So small sunspots weren't observed before that time. So this graph only shows that their detection levels are getting better, or their observations are more complete, small sunspots are now included.
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Post by justsomeguy on Oct 6, 2011 13:17:44 GMT
Thank you Dr. Svalgaard.
Are we seeing some flattening of the curve? Namely are the gauss per sunspot decreasing at a reduced rate? If true, that could be because we are reaching solar max and nothing to do with the L & P effect?
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Post by lsvalgaard on Oct 6, 2011 16:05:47 GMT
I wonder why there were no weak sunspots detected before 2006. There have always been weak sunspots (pores), that were just visible. So small sunspots weren't observed before that time. So this graph only shows that their detection levels are getting better, or their observations are more complete, small sunspots are now included. Bill Livingston has applied the same criteria since about 2000 and is using the same instrument, so there are no detection issues. What have changed is that he is getting more telescope time, so the number of spots observed is increasing.
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Post by lsvalgaard on Oct 6, 2011 16:07:25 GMT
Thank you Dr. Svalgaard. Are we seeing some flattening of the curve? Namely are the gauss per sunspot decreasing at a reduced rate? If true, that could be because we are reaching solar max and nothing to do with the L & P effect? There is a rather wide distribution of field strength for any given year. As the number of spots increase the distribution is getting wider, but the lower end is cut off by the L&P effect.
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Post by justsomeguy on Oct 6, 2011 16:35:22 GMT
[quote} but the lower end is cut off by the L&P effect.[/quote]
Great point.
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