A DOPPLER DIMMING DETERMINATION OF CORONAL OUTFLOW VELOCITY

被引：58

作者：

STRACHAN, L ^{[1
]}

KOHL, JL ^{[1
]}

WEISER, H ^{[1
]}

WITHBROE, GL ^{[1
]}

MUNRO, RH ^{[1
]}

机构：

[1] BALL AEROSP SYST GRP,BOULDER,CO 80306

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 412卷 / 01期

关键词：

SOLAR WIND; SUN; CORONA; PARTICLE EMISSION; UV RADIATION;

D O I：

10.1086/172930

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Outflow velocities in a polar coronal hole are derived from observations made during a 1982 sounding rocket flight. The velocity results are derived from a Doppler dimming analysis of resonantly scattered H I Lyalpha. This analysis indicates radial outflow velocities of 217 km s-1 at 2 R. from Sun-center with an uncertainty range of 153 to 251 km s-1 at a confidence level of 67%. These results are best characterized as strong evidence for supersonic outflow within 2 R. of Sun-center in a polar coronal hole. Several means for obtaining improved accuracy in future observations are discussed.

引用

页码：410 / 420

页数：11

共 25 条

[1] COMPARISON OF 10.7 CM RADIO FLUX WITH SME SOLAR LYMAN ALPHA FLUX [J].

BARTH, CA ;

TOBISKA, WK ;

ROTTMAN, GJ ;

WHITE, OR .

GEOPHYSICAL RESEARCH LETTERS, 1990, 17 (05) :571-574

[2] PROFILE AND POLARIZATION OF CORONAL L-ALPHA LINE [J].

BECKERS, JM ;

CHIPMAN, E .

SOLAR PHYSICS, 1974, 34 (01) :151-161

[3]

COFFEY HE, 1982, SOL GEOPHYS DATA 1, V457, P49

[4]

COFFEY HE, 1982, SOL GEOPHYS DATA 1, V456, P29

[5] ROCKET OBSERVATIONS OF ULTRAVIOLET SOLAR SPECTRUM DURING TOTAL ECLIPSE OF 1970 MARCH 7 [J].

GABRIEL, AH ;

GARTON, WRS ;

GOLDBERG, L ;

JONES, TJL ;

JORDAN, C ;

MORGAN, FJ ;

NICHOLLS, RW ;

PARKINSO.WJ ;

PAXTON, HJB ;

REEVES, EM ;

SHENTON, CB ;

SPEER, RJ ;

WILSON, R .

ASTROPHYSICAL JOURNAL, 1971, 169 (03) :595-&

[6] SOLAR HYDROGEN LYMAN-BETA AND LYMAN-ALPHA-LINES - DISK CENTER OBSERVATIONS FROM OSO-8 COMPARED WITH THEORETICAL PROFILES [J].

GOUTTEBROZE, P ;

LEMAIRE, P ;

VIAL, JC ;

ARTZNER, G .

ASTROPHYSICAL JOURNAL, 1978, 225 (02) :655-664

[7]

HUNDHAUSEN AJ, 1972, CORONAL EXPANSION SO, P47

[8]

HYDER CL, 1970, SOL PHYS, V14, P147

[9]

JACCHIA LG, 1977, OBS SPEC REP, P375

[10]

Kohl J. L., 1978, New Instrumentation for Space Astronomy, P91

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