bradk
Level 3 Rank
Posts: 199
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Post by bradk on Jan 15, 2011 16:21:20 GMT
Very neat picture George. This spot has been very active before she made the turn to the visible side of the sun, so it will be interesting to see if she fires something in our direction.
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Post by af4ex on Jan 15, 2011 16:36:18 GMT
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Post by George Kominiak on Jan 15, 2011 16:38:34 GMT
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Post by George Kominiak on Jan 15, 2011 16:56:16 GMT
Fantastic shot! I wonder what this region has in store for us once it rotates into our field of view?? G. P.S. I forgot to add. The event looks pretty impressive at 304A as well! |
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Post by w7psk on Jan 15, 2011 18:56:15 GMT
Usually the 304 plots start to go up before they rotate into view. Neither 304 SEM or 304 EVE seems to be going up with this one.
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Post by af4ex on Jan 15, 2011 19:42:50 GMT
Usually the 304 plots start to go up before they rotate into view. Neither 304 SEM or 304 EVE seems to be going up with this one. Look again below. Both SEM and EVE are rising, along with all the other indices: microwave, EUV and x-ray. Look at all the new x-ray stuff that started up when this new spot showed up. It's a powerhouse of activity. [Similar to 1133/1140, which managed to get a B-class flare recorded by NOAA, even though it had gone to the far side. See chart below] I think I've finally figured out the delay ("latency") in the official SFI reports. It's based on the noon reading (2000 UTC) at Penticton British Columbia, so by the time it's processed and posted it's evening on the East coast. So we usually see it the next day. We can mitigate the delay slightly by looking at the 1700Z reading. I've been tracking these for a few days now, watching the SFI slide down to 79 (as of yesterday). The 1700Z reading today has been posted and has already climbed back to 81, which I am very confident is due to the new spot, most likely the future "AR1147". 2000Z and 2300Z readings will be posted in a few hours and will likely climb even higher as the spot starts radiating Earthward. Penticton
Date MHZ 1700Z 2000Z 2300Z
2011 Jan 2 2800 90 91 90
2011 Jan 3 2800 91 92 92
2011 Jan 4 2800 91 91 89
2011 Jan 5 2800 88 88 87
2011 Jan 6 2800 87 87 87
2011 Jan 7 2800 87 86 86
2011 Jan 8 2800 86 85 84
2011 Jan 9 2800 84 83 82
2011 Jan 10 2800 84 83 83
2011 Jan 11 2800 83 83 82
2011 Jan 12 2800 80 80 80
2011 Jan 13 2800 80 80 79
2011 Jan 14 2800 80 79 79
2011 Jan 15 2800 81 -- --
Attachments:
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Jan 15, 2011 20:43:12 GMT
Nice find af4ex.
Is this spot in the same location as any prior spot/activity?
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Post by af4ex on Jan 15, 2011 21:41:05 GMT
bradk> Is this spot in the same location as any prior spot/activity? 1138
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Jan 15, 2011 21:44:54 GMT
Thank you!
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Jan 15, 2011 22:30:12 GMT
I have a stupid question, so I hope you indulge my lack of knowledge.
How long lived is the average sunspot (how many rotations does one make) and what is the variability around that mean? Do large ones last longer (which would seem to make sense)...
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Post by af4ex on Jan 16, 2011 0:13:37 GMT
bradk> How long lived is the average sunspot (how many rotations does > one make) and what is the variability around that mean? Do > large ones last longer (which would seem to make sense)... I believe there is a correlation between size and longevity. Dr. S. says the big ones can endure for months. My impression is that there aren't a lot of historical records on this because the ability to track these spots with certainty around whole rotations dates back only a few years, when the STEREO satellites were launched (2006). They have only recently migrated to positions where nearly the entire surface of the sun (in EUV light) can be continuously monitored. Before that, there must have been much more uncertainty about the history of new spots emerging on the east limb. Especially at peak times when there were a lot of spots. Now you can track the spots yourself using the STEREO panorama (http://stereo-ssc.nascom.nasa.gov/beacon/beacon_secchi.shtml), or by using the raben.com website, which maps active regions on the far side by their ID #'s: www.raben.com/maps/BTW, the region numbers are now up into the 11,000's, but for convenience, we normally use only the last four digits when the current context is understood. Raben.com uses the full 5-digit number to avoid any historical ambiguity.
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Jan 16, 2011 2:12:20 GMT
Thanks again
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Post by af4ex on Jan 16, 2011 5:20:25 GMT
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bradk
Level 3 Rank
Posts: 199
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Post by bradk on Jan 16, 2011 22:42:45 GMT
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Post by af4ex on Jan 17, 2011 11:06:02 GMT
bradk> 1138 has really had a rebirth on the far side, 1147's x-ray activity has toned down a bit since it rotated into view. Only one B-class flare this morning. But it has a strong microwave signature (17Ghz). Continuously lit up. Looks like a new region is developing in the southwest quadrant. Attachments:
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