Solar and Heliospheric Report J. Ryan. :Data_list: 20050602_boumag_1m.txt :Created: 2005 Jun 02 1301 UTC # Prepared by the U.S. Dept. of Commerce, NOAA,

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Presentation transcript:

Solar and Heliospheric Report J. Ryan

:Data_list: _boumag_1m.txt :Created: 2005 Jun UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center. # Please send comments and suggestions to # # Label: H - component = Magnetometer variations parallel to the # surface along the magnetic north-south direction. # Label: D - component = Magnetometer variations parallel to the # surface, transverse to H and eastwards. # Units: nanotesla (nT) # Source: Boulder NOAA Magnetometer # Missing data: -1.00e+05 # # 1-minute Boulder NOAA Magnetometer Components # # Modified Seconds # UTC Date Time Julian of the # YR MO DA HHMM Day Day H D # e e e e e e e e e e+01

Upcoming Events Singapore AOGS meeting –(Pacific rim AGU meeting) ICRC

2005 January 20 GLE Biggest GLE since 1956 Very anisotropic –Some stations measured no increase. Associated with X7 flare –Big, but not huge –Strong and fast CME—producing shock

Relatively stable period for particles during flare activity

Tail of event has different spectrum (depth dependent)

Science Questions Climax/Milagro appears to be in the cross hairs. Spectrum of prompt particles. Spectrum and interpretation of secondary bump Interpretation of tail kink.

Outstanding Tasks Interplanetary conditions? –Solar wind speed (guiding center path) –Turbulence level (rise time) (appears to be low) CME lift-off time and speed. (Release time) Hard X-ray onset time. Signals from other NMs to ‘estimate’ anisotropy. (1/cos  ) Instantaneous cutoff ridigities for Climax/Fenton Hill/MW/Durham

Halloween Event

Science Questions Spectrum of Decrease Anisotropy of Decrease –Depends on magnetic fields 1.In front of shock 2.Behind shock 3.Inside ejecta 4.Behind ejecta –Should see A change in time.

Tasks Need a muon fitter to study triggered events. Need correction factors for long periods, i.e., days. –Which way does temperature effect go and how large is it?

Potential Author Issues Will necessarily rely on input from other investigators. Can assess how much we can do on our own without new info from outsiders. Subsequent publications will involve others, but Milagro data (mostly) may be published.