The April 9-11 CME Event
Preliminary Data from the POLAR/TIMAS Instrument

The high count rates encountered at times during this event will require detailed analysis to determine the absolute fluxes encountered. These intervals are encoded with white and deep red count-rates on the 24 hour summary plots.
NOTE: Position and in some cases time labels are missing from these preliminary plots.

24 hour summary plots of uncorrected count rates

Format: 8 spectrogram panels 
	in order H+ Heads A/B
		 O+ Heads A/B
		 He+ Heads A/B
		 He++ Heads A/B
 The 28 energy steps cover the range from 15 ev/e to 33 kev/e in
 logritmically spaced increments.

 The uncorrected count rate is encoded using the color bar

Comments about the plots appear below each one.

Higher time resolution data from perigee intervals are
included after the 24 hour plots

Cusp/boundary layer fluxes encountered from ~07:30 to ~1200 on April 9

Cusp/boundary layer fluxes encounterd from ~00:30 to ~03:00, ~04:30 to ~06:00 and intermittently from ~17:00 to ~23L99

Cusp/boundary layer fluxes encountered intermittently from ~11:30 to 20:00 when the TIMAS High Voltage was turned off to prepare for the spring flip of the space craft.

Energy-Time spectrograms of Fluxes encountered during perigee passes

Note the lack of ephemeris labels on these plots
For orbit information, see the POLAR/SPOF pages
	Energy time spectrograms covering the energy range
		0.15 eV/e to 33 keV/e as indicated
	Flux (with preliminary calibration) encoded
		using the color bar
	Data averaged for 4 spins (24 seconds)

Lower resolution He++ data is available for most of 
	times it is missing in these preliminary plots

The horizontal black bands at alternate energy steps are
a consequence of the way data is acquired and compressed

April 9 from 01:30 to 04:30
The southern polar cap Fuxes of H+ and O+ are near the TIMAS threshold of detection

April 9 from 18:30 to 21:30
Weak fluxes of low energy H+ seen in the southern polar cap

April 10 from 12:30 to 15:30
The southern polar cap is full of low energy H+ and O+

April 11 from 06:00 to 09:00
The O+ and H+ low energy fluxes are concentrated on the day side of the southern polar cap.

Prepared by Bill Peterson to whom comments/questions should be addressed.
Last updated 08/03/2005 by Daryl Carr