Energy Distribution of Precipitating Electrons Estimated From Optical and Cosmic Noise Absorption Measurements

Details Energy Distribution of Precipitating Electrons Estimated From Optical and Cosmic Noise Absorption Measurements Energy Distribution of Precipitating Electrons Estimated From Optical and Cosmic Noise Absorption Measurements

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa21b0069m&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA21B-0069

Physics

2407 Auroral Ionosphere (2704), 2455 Particle Precipitation, 2716 Energetic Particles, Precipitating

Scientific paper

This study is a statistical analysis on energy distribution of precipitating electrons, based on CNA (cosmic noise absorption) data obtained from the 256-element imaging riometer in Poker Flat, Alaska, and optical data measured with an meridian scanning photometer over 79 days during the winter periods from 1996 to 1998. On the assumption that energy distributions of precipitating electrons represent Maxwellian distributions, CNA is estimated based on the observation data of auroral 427.8-nm and 630.0-nm emissions as well as the average atmospheric model, and compared with the actual observation data. Although the obsevation data have a broad distribution, they show systematically larger CNA than the model estimate. CNA determination using kappa or double Maxwellian distributions, instead of Maxwellian distributions, better explains the distribution of observed CNA data. Kappa distributions represent a typical energy distribution of electrons in the plasma sheet of the magnetosphere, the source region of precipitating electrons. This result suggests that the energy distribution of precipitating electrons reflects the energy distribution of electrons in the plasma sheet.

Affiliated with

Also associated with

No associations

Rating

Energy Distribution of Precipitating Electrons Estimated From Optical and Cosmic Noise Absorption Measurements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Energy Distribution of Precipitating Electrons Estimated From Optical and Cosmic Noise Absorption Measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy Distribution of Precipitating Electrons Estimated From Optical and Cosmic Noise Absorption Measurements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1641573