Kinetic temperatures of iron ions in the solar wind observed with STEREO/PLASTIC

被引：3

作者：

Bochsler, Peter ^{[1
]}

Lee, Martin A. ^{[1
]}

Karrer, Reto ^{[2
]}

Popecki, Mark A. ^{[1
]}

Galvin, Antoinette B. ^{[1
]}

Kistler, Lynn M. ^{[1
]}

Mobius, Eberhard ^{[1
]}

Farrugia, Charles J. ^{[1
]}

Kucharek, Harald ^{[1
]}

Simunac, Kristin D. C. ^{[1
]}

Blush, Lisa M. ^{[2
]}

Daoudi, Hagar ^{[2
]}

Wurz, Peter ^{[2
]}

Klecker, Berndt ^{[3
]}

Wimmer-Schweingruber, Robert F. ^{[4
]}

Thompson, Barbara ^{[5
]}

Luhmann, Janet G. ^{[6
]}

Jian, Lan K. ^{[7
]}

Russell, Christopher T. ^{[7
]}

Opitz, Andrea ^{[8
]}

机构：

[1] Univ New Hampshire, Ctr Space Sci, Durham, NH 03824 USA

[2] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland

[3] Max Planck Inst Extraterr Phys, D-85471 Garching, Germany

[4] Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany

[5] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[6] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[7] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90024 USA

[8] CNRS UPS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France

来源：

TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE | 2010年 / 1216卷

关键词：

Solar wind plasma; minor ions; velocity distributions; PROTONS; STEREO;

D O I：

10.1063/1.3395850

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

STEREO/PLASTIC provides detailed information on the three-dimensional velocity distributions of solar wind iron ions with a time resolution of 5 minutes. In general the distributions at 1 AU contain complicated structures showing persistence over several records, i.e., over intervals of up to 30 minutes, but no clear correlation of the properties of these distributions with the direction of the ambient magnetic field is evident. We have performed a statistical analysis using nearly 9000 observations. Iron ions follow the same trends as protons, alpha particles, and electrons: The ratio T-perpendicular to/T-parallel to seems to be limited by the ion cyclotron instability, whereas T-parallel to/T-perpendicular to is bounded by the firehose instability.

引用

页码：257 / +

页数：2

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