Observation of the CIV effect in interstellar clouds: A speculation on the physical mechanism for their existence

被引：13
|
作者：
Peratt, AL [1 ]
Verschuur, GL
机构：
[1] US DOE, Washington, DC 20585 USA
[2] Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[3] Univ Memphis, Dept Phys, Memphis, TN 38152 USA
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2000年 / 28卷 / 06期
关键词：
CIV; electric space; interstellar clouds; plasma universe;
D O I：
10.1109/27.902239
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Observations of neutral hydrogen (HI) emission profiles produced by gas in the local interstellar medium are found to be characterized by four linewidth regimes. Dominant and pervasive features have widths on average of 5.2, 13, and 31 km/s, and a very broad component approximately 50 km/s nide. A striking coincidence exists between these linewidths and the magnitudes of the critical ionization velocities of the most abundant atomic species in interstellar space: 6 km/s for sodium and calcium; 13 km/s for carbon, oxygen, and nitrogen; 31 km/s fur helium; and 51 km/s for hydrogen. The data relate to observations near neutral hydrogen structures that are filamentary.
引用
收藏
页码：2122 / 2127
页数：6
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