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Solar and Heliospheric Report

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, Space Environment Center. # Please send comments and suggestions to SEC.Webmaster@noaa.gov #

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Solar and Heliospheric Report

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  1. Solar and Heliospheric Report J. Ryan

  2. :Data_list: 20050602_boumag_1m.txt • :Created: 2005 Jun 02 1301 UTC • # Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center. • # Please send comments and suggestions to SEC.Webmaster@noaa.gov • # • # 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 • #-------------------------------------------------------- • 2005 06 02 0000 53523 0 -1.97e+01 -2.83e+01 • 2005 06 02 0001 53523 60 -1.97e+01 -2.83e+01 • 2005 06 02 0002 53523 120 -1.96e+01 -2.82e+01 • 2005 06 02 0003 53523 180 -1.98e+01 -2.82e+01 • 2005 06 02 0004 53523 240 -1.98e+01 -2.82e+01

  3. Upcoming Events • Singapore AOGS meeting • (Pacific rim AGU meeting) • ICRC

  4. 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

  5. Relatively stable period for particles during flare activity

  6. Tail of event has different spectrum (depth dependent)

  7. 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.

  8. 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

  9. Halloween Event

  10. Science Questions • Spectrum of Decrease • Anisotropy of Decrease • Depends on magnetic fields • In front of shock • Behind shock • Inside ejecta • Behind ejecta • Should see A change in time.

  11. 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?

  12. 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.

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