Solar Cycle 24 Begins |
Solar Cycle 24 Begins |
Guest_Sunspot_* |
Jan 4 2008, 07:45 PM
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Latest from spaceweather.com
SOLAR CYCLE 24: Solar physicists have been waiting for the appearance of a reversed-polarity sunspot to signal the start of the next solar cycle. The wait is over. A magnetically reversed, high-latitude sunspot emerged today: image. If you have a solar telescope, take a look at this important new active region. It marks the beginning of Solar Cycle 24 and the sun's slow ascent back to Solar Maximum. Magnetic Image Visible Light Image |
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Dec 30 2010, 12:39 AM
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I'm not seeing it either. According to spaceweather.com, the spot number R formula is R=k (10g+s), where g is the number of sunspot groups, s is the number of spots, and k is a constant based on seeing conditions, "usually" <1.
I can see it being zero, but not less than zero. Suspect that the chart is messed up. EDIT: Possible sorta-solution. Notice that one of the three curves (the dotted line) does not dip below zero. Suspect that this is probably the actual observation number, and the other two curves are statistical products of some sort whose math is not readily obvious. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 30 2010, 02:04 AM
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#3
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Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
"usually" <1. How much less? Only way R could be negative is if k < 0 (assuming physically meaningful values of g and s). Edit: Found this. I don't know how much it applies since it doesn't seem to be a direct counting method. QUOTE Negative values are artifacts and are consistent with zero within the error limits.
-------------------- -- Hungry4info (Sirius_Alpha)
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