Vertical Temperature Structures of the Solar Corona Derived with the Hinode X-Ray Telescope

被引：2

作者：

Kano, Ryouhei ^{[1
]}

Sakao, Taro ^{[2
]}

Narukage, Noriyuki ^{[2
]}

Tsuneta, Saku ^{[1
]}

Kotoku, Jun'ichi ^{[1
]}

Bando, Takamasa ^{[1
]}

DeLuca, Edward ^{[3
]}

Lundquist, Loraine ^{[3
]}

Golub, Leon ^{[3
]}

Hara, Hirohisa ^{[1
]}

Matsuzaki, Keiichi ^{[2
]}

Shimojo, Masumi ^{[4
]}

Shibasaki, Kiyoto ^{[4
]}

Shimizu, Toshifumi ^{[2
]}

Nakatani, Ichiro ^{[2
]}

机构：

[1] Natl Astron Observ Japan, Tokyo 1818588, Japan

[2] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[3] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA

[4] Natl Astron Observ Japan, Nobeyama Solar Radio Observ, Minamimaki, Nagano 3841305, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2008年 / 60卷 / 04期

基金：

英国科学技术设施理事会;

关键词：

Sun: corona; Sun:; X-rays; gamma rays;

D O I：

10.1093/pasj/60.4.827

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We obtained temperature structures in faint coronal features above and near the solar limb with the X-Ray Telescope aboard the Hinode satellite by accurately correcting the scattered X-rays from surrounding bright regions with occulted images during the solar eclipses. Our analysis yields a polar coronal hole temperature of about 1.0 MK and an emission measure in the range of 10(25.5)-10(26.0) cm(-5). In addition, our methods allow us to measure the temperature and emission measure of two distinct quiet-Sun structures: radial (plume-like) structures near the boundary of the coronal-hole and diffuse quiet Sun regions at mid-latitudes. The radial structures appear to have increasing temperature with height during the first 100 Mm, and constant temperatures above 100 Mm. For the diffuse quiet-Sun region the temperatures are the highest just above the limb, and appear to decrease with height. These differences may be due to different magnetic configurations.

引用

页码：827 / 834

页数：8

共 27 条

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