Solar activity May 5-14 2009
Victor Herrero
Many thanks to the SOHO, WIND, and STEREO Observatory Teams, and the taxpayers who support them.
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May 14
A SOHO EIT 195 image showing the active region that generated 7 flares, up to class B1.8, and many bursts, May 5-10.
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May 9
The
WAVES Radio Instrument of the STEREO Behind Observatory recorded many
bursts from about 0300 to 1700 UT, in the 100 Khz to 16 Mhz band.
The
spectrum shows 9 reaching over 20 dB above background noise, and 4
weaker ones. The spectrum is complex and the counts are approximate.
STEREO
WAVES Ahead also recorded 4 of the stronger ones in SW B, and noise
below 1 Mhz, at the 10 dB level, lasting several hours.
The following illustration shows part of the STEREO WAVES Behind Observatory spectrum:
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May 8
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May 5
The WIND WAVES Possible Type II/IV list for 2009:
http://lep694.gsfc.nasa.gov/waves/typeII09.html
shows
the first event for the year. The STEREO Ahead and Behind
Observatories recorded the following spectrum (shown in part):
Type II radiation following type III is shown in greater detail in this spectrum:
This is the Coronal Mass Ejection :
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