HYDROMAGNETIC-WAVES AND THE LINEWIDTH-SIZE RELATION IN INTERSTELLAR MOLECULAR CLOUDS

被引：43
作者：
MOUSCHOVIAS, TC [1 ]
PSALTIS, D [1 ]
机构：
[1] UNIV ILLINOIS,DEPT ASTRON,URBANA,IL 61801
来源：
ASTROPHYSICAL JOURNAL | 1995年 / 444卷 / 02期
关键词：
ISM; CLOUDS; MAGNETIC FIELDS; MOLECULES; MHD; STARS; FORMATION WAVES;
D O I：
10.1086/187871
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Large-amplitude, long-wavelength Alfven waves in self;gravitating, magnetically supported clouds imply a linewidth-size relation (Delta upsilon)(wave) similar or equal to 1.4(B/30 mu G)(1/2)(R/1 pc)(1/2) km s(-1), where B is the mean magnetic field strength and R the radius of the cloud. This relation is in excellent quantitative agreement with observations of objects (clouds, cores, and OH masers) for which the nonthermal linewidth (Delta upsilon)(NT), the FWHM size R, and the field strength B have been measured.
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收藏
页码：L105 / L108
页数：4
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