The calibration and initial results of the HeI D3 line flash spectrum obtained during the 2008 total solar eclipse  

作　　者：LI Hui JI HaiSheng NI HouKun ZHANG HaiYing ZHANG YaNan LIU HongRui DENG YuanYong WANG DongGuang DU QiuSheng ZHOU TuanHui LI JingWei SHEN JinHua 

机构地区：[1]Purple Mountain Observatory,2 Nanjing 210008,China [2]Nanjing Institute of Astronomical Optics&Technology,Nanjing 210042,China [3]National Astronomical Observatories of China,Beijing 100012,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2009年第11期1799-1805,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10843004, 10873038, and 10833007);the National Basic Research Program of China (Grant No. 2006CB806302);the CAS Project (Grant No. KJCX2-YW-T04);the China Meteorological Administration(Grant No. GYHY200706013)

摘　　要：The flash spectra in the HeI D3 line were obtained during the 2008 total solar eclipse. This paper describes the instrument and the calibration of the obtained flash spectrum, and presents our initial results. The average integrated intensity is Eave = 8.13×1013 erg·cm-1· s-1·ster-1 at h = 1100 km, which confirms that the HeI D3 emission is negatively correlated with the solar activity. The surface brightness reaches a maximum of F ave = 8.25×105 erg·cm-2·s-1·ster-1 at about h ≈ (1290 ± 75) km and then decreases exponentially with height when h >1800 km with an exponential index β = 1.63×10-8 cm-1.The flash spectra in the HeI D3 line were obtained during the 2008 total solar eclipse. This paper describes the instrument and the calibration of the obtained flash spectrum, and presents our initial results. The average integrated intensity is E ave = 8.13 × 1013 erg·cm?1·s?1·ster?1 at h = 1100 km, which confirms that the HeI D3 emission is negatively correlated with the solar activity. The surface brightness reaches a maximum of F ave = 8.25×105 erg·cm?2·s?1·ster?1 at about h ≈ (1290 ± 75) km and then decreases exponentially with height when h > 1800 km with an exponential index β = 1.63×10?8 cm?1.

关 键 词：total solar ECLIPSE FLASH SPECTRUM spectral LINE 

分 类 号：P182.27[天文地球—天文学]