Solar wind ion trends and signatures: STEREO PLASTIC observations approaching solar minimum

被引：11

作者：

Galvin, A. B. ^{[1
]}

Popecki, M. A. ^{[1
]}

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

Kistler, L. M. ^{[1
]}

Ellis, L. ^{[1
]}

Barry, J. ^{[1
]}

Berger, L. ^{[2
]}

Blush, L. M. ^{[3
]}

Bochsler, P. ^{[1
,3
]}

Farrugia, C. J. ^{[1
]}

Jian, L. K. ^{[4
]}

Kilpua, E. K. J. ^{[5
]}

Klecker, B. ^{[6
]}

Lee, M. ^{[1
]}

Liu, Y. C. -M. ^{[1
]}

Luhmann, J. L. ^{[7
]}

Moebius, E. ^{[1
]}

Opitz, A. ^{[8
]}

Russell, C. T. ^{[4
]}

Thompson, B. ^{[9
]}

Wimmer-Schweingruber, R. F. ^{[6
]}

Wurz, P. ^{[3
]}

机构：

[1] Univ New Hampshire, Durham, NH 03824 USA

[2] Univ Kiel, Inst Expt & Appl Phys, Kiel, Germany

[3] Univ Bern, Bern, Switzerland

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

[5] Univ Helsinki, Div Theoret Phys, Dept Phys, FIN-00014 Helsinki, Finland

[6] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

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

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

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

来源：

ANNALES GEOPHYSICAE | 2009年 / 27卷 / 10期

关键词：

Interplanetary physics; Solar wind plasma; Sources of the solar wind; COROTATING INTERACTION REGIONS; STREAM INTERFACES; CORONAL HOLES; PLASMA; FLOWS;

D O I：

10.5194/angeo-27-3909-2009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

STEREO has now completed the first two years of its mission, moving from close proximity to Earth in 2006/2007 to more than 50 degrees longitudinal separation from Earth in 2009. During this time, several large-scale structures have been observed in situ. Given the prevailing solar minimum conditions, these structures have been predominantly coronal hole-associated solar wind, slow solar wind, their interfaces, and the occasional transient event. In this paper, we extend earlier solar wind composition studies into the current solar minimum using high-resolution (1-h) sampling times for the charge state analysis. We examine 2-year trends for iron charge states and solar wind proton speeds, and present a case study of Carrington Rotation 2064 (December 2007) which includes minor ion (He, Fe, O) kinetic and Fe composition parameters in comparison with proton and magnetic field signatures at large-scale structures observed during this interval.

引用

页码：3909 / 3922

页数：14

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