Interstellar He+ ring‐beam distributions: Observations and implications
Interstellar He+ ring‐beam distributions: Observations and implications
复制标题
星际氦环束分布:观测结果和影响
DOI:
10.1002/grl.50368
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发表时间:
2013
影响因子:
5.2
通讯作者:
Galvin
中科院分区:
文献类型:
--
作者:
Berger;Wimmer-Schweingruber;R. F.;;Galvin
We report systematic measurements of the distribution of the incident angle of interstellar pickup He+ions as observed by STEREO/Plasma and Supra‐Thermal Ion Composition (PLASTIC). We have organized these observations according to the angle spanned by the Interplanetary Magnetic Field (IMF), , and the bulk solar wind velocity, . Our measurements show clear evidence of a relatively local injection of He+pickup ions into the solar wind, which are then seen as a ring distribution perpendicular to . Changes of the spectral shape and a reduced flux of interstellar He+during radial IMF configuration, as observed by, e.g., Ulysses/Solar Wind Ion Composition Spectrometer (SWICS), SOHO/Charge Time‐Of‐Flight (CTOF), Active Magnetospheric Particle Tracer Explorers/SUprathermaL Energy Ionic Charge Analyzer (SULEICA), have generally been attributed to inefficient scattering across 90° pitch‐angle. Our observations of the pitch‐angle distribution of interstellar He+suggest that these changes are instead a result of locally injected pickup ions that escape detection for IMF configuration in which the Solar Wind Sector of PLASTIC, as well as SWICS, CTOF, and SULEICA, are not sensitive to the measurement of the locally injected pickup ion ring.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
L. Saul;P. Wurz;R. Kallenbach
通讯作者:
R. Kallenbach
影响因子:
5.2
作者:
M. Oka;T. Terasawa;H. Noda;Y. Saito;T. Mukai
通讯作者:
M. Oka;T. Terasawa;H. Noda;Y. Saito;T. Mukai
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
L. Saul;E. Möbius;P. Isenberg;P. Bochsler
通讯作者:
P. Bochsler
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
L. M. Blush;P. Bochsler;H. Daoudi;A. Galvin;R. Karrer;L. Kistler;B. Klecker;E. Möbius;A. Opitz;M. Popecki;B. Thompson;R. Wimmer–Schweingruber;P. Wurz
通讯作者:
P. Wurz