90° PA enhancements of suprathermal electrons near interplanetary shocks

DOI: https://doi.org/10.18690/analipazu.3.1.2-6.2013
Keywords: interplanetary shocks, suprathermal electrons, 90° PA enhancements

Abstract

In this letter we report the results of the first systematic study of a population of suprathermal electrons in the solar wind, called the 90° pitch angle enhancements. This feature was found in the vicinity of interplanetary shocks. We analyzed 2 hours time intervals centered on the shocks. The enhancements were found at 114 of 232 shocks (49 %), which means that this is a common feature. Statistical analysis of shock properties show no important differences between the shocks associated with the enhancements and those not associated with them. Preliminary analysis of electric field fluctuations revealed possible correlation between the presence of 90° PA enhancements of suprathermal electrons and the wave activity.

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Author Biographies

Primož Kajdič, Université de Toulouse; UPS-OMP; IRAP; Toulouse, France

Toulouse, France. E-mail: pkajdic@irap.omp.eu

Benoit Lavraud, Université de Toulouse; UPS-OMP; IRAP; Toulouse, France.

Toulouse, France.

Xóchitl Blanco-Cano, Instituto de Geofísica, Ciencias Espaciales, Universidad Nacional Autónoma de México, Mexico City, Mexico.

Mexico City, Mexico.

Jean-Andre Sauvaud, Université de Toulouse; UPS-OMP; IRAP; Toulouse, France.

Toulouse, France.

Arnaud Zaslavsky Arnaud Zaslavsky, LESIA, Observatoire de Paris-CNRS-Université Pierre et Marie Curie-Université Denis Diderot, Meudon, France.

Meudon, France.

Andrea Opitz, European Space Research and Technology Centre, European Space Agency, Noordwijk, Netherlands.

Noordwijk, Netherlands.

Lan K. Jian, University of Maryland, Colledge Park, Maryland, USA.

Maryland, USA.

Christopher T. Russell, Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, California USA.

California USA.

Janet G. Luhmann, Space Science Laboratory, University of California, Berkeley, California, USA.

California, USA.

Milan Maksimovic, LESIA, Observatoire de Paris-CNRS-Université Pierre et Marie Curie-Université Denis Diderot, Meudon, France.

Meudon, France.

Published
2022-05-19
How to Cite
Kajdič P., Lavraud B., Blanco-Cano X., Sauvaud J.-A., Arnaud Zaslavsky A. Z., Opitz A., K. Jian L., T. Russell C., G. Luhmann J., & Maksimovic M. (2022). 90° PA enhancements of suprathermal electrons near interplanetary shocks. Anali PAZU, 3(1), 2-6. https://doi.org/10.18690/analipazu.3.1.2-6.2013
Issue
Vol 3 No 1 (2013): ANALI PAZU
Section
Prispevki