A statistical study of solar energetic electron events over one solar cycle
Abstract
Using WIND 3DP electron data from 1995 through 2005 we study the number distribution of solar energetic electron events over one solar cycle We find a quite power-law relationship between the event number N and the event peak flux J dN dJ A cdot J - gamma Taking into account the effect of instrumental background we estimate the yearly number of electron events from the integration using the minimal peak flux observed at 3 and 40 keV We find that both the observed and estimated numbers of electron events show a time variation similar to the sunspot numbers We also present the statistical study of electron events accompanied by low-energy sim MeV nucleon and highly 3 He-rich ion emissions and estimate the effects of electron scattering in the interplanetary medium from in situ observations at 1 AU
- Publication:
-
36th COSPAR Scientific Assembly
- Pub Date:
- 2006
- Bibcode:
- 2006cosp...36.1404W