Simulation of quiet-sun waves in the CaII infrared triplet

被引：14
|
作者：
Pietarila, A
Socas-Navarro, H
Bogdan, T
Carlsson, M
Stein, RF
机构：
[1] Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway
[2] Natl Ctr Atmospher Res, High Altitude Observ, Boulder, CO 80301 USA
[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
来源：
ASTROPHYSICAL JOURNAL | 2006年 / 640卷 / 02期
关键词：
line : profiles; Sun : atmosphere; Sun : chromosphere; Sun : magnetic fields;
D O I：
10.1086/500240
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Ca II infrared triplet lines around 8540 angstrom are good candidates for observing chromospheric magnetism. Model spectra of these lines are obtained by combining a radiation hydrodynamic simulation with a Stokes synthesis code. The simulation shows interesting time-varying behavior of the Stokes V profiles as waves propagate through the formation region of the lines. Disappearing and reappearing lobes in the Stokes V profiles as well as profile asymmetries are closely related to the atmospheric velocity gradients.
引用
收藏
页码：1142 / 1152
页数：11
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