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WHAT CAUSED AN UNUSUALLY BROAD HE-I 10830 ANGSTROM EMISSION-LINE IN A SOLAR LIMB FLARE
YOU, JQ ; OERTEL, GK
1992
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume389Issue:1Pages:L33-L35
AbstractThis Letter discusses an observation of an unusually broad Helium I (He I) 10830 angstrom line from a flare on the solar limb. The line profile is close to a dispersion profile with full half-width of 4.2 angstrom. One interpretation of this observation could be a peculiar distribution of mass motions in the flare that is just right to mimic a dispersion-like line profile. Pressure broadening is usually indicated by a dispersion profile but is also an unlikely cause of the broadening because it would imply an electron density in the flare near 4 x 10(17) cm3. We found no other credible explanations for the observed broadening. We therefore propose a critical experiment to clearly distinguish between the two interpretations or to point the way toward another.
Subject Area天文和天体物理
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8546
Collection期刊(老文献)
Recommended Citation
GB/T 7714
YOU, JQ,OERTEL, GK. WHAT CAUSED AN UNUSUALLY BROAD HE-I 10830 ANGSTROM EMISSION-LINE IN A SOLAR LIMB FLARE[J]. ASTROPHYSICAL JOURNAL,1992,389(1):L33-L35.
APA YOU, JQ,&OERTEL, GK.(1992).WHAT CAUSED AN UNUSUALLY BROAD HE-I 10830 ANGSTROM EMISSION-LINE IN A SOLAR LIMB FLARE.ASTROPHYSICAL JOURNAL,389(1),L33-L35.
MLA YOU, JQ,et al."WHAT CAUSED AN UNUSUALLY BROAD HE-I 10830 ANGSTROM EMISSION-LINE IN A SOLAR LIMB FLARE".ASTROPHYSICAL JOURNAL 389.1(1992):L33-L35.
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