locationofenergysourceforcoronalheatingonthephotosphere
文献类型：期刊论文
| 作者 | Hong Zhenxiang1; Yang Xu2; Wang Ya1; Ji Kaifan3; Ji Haisheng4 ; Cao Wenda2
|
| 刊名 | researchinastronomyandastrophysics
 |
| 出版日期 | 2017 |
| 卷号 | 17期号:3页码:10 |
| ISSN号 | 1674-4527 |
| 英文摘要 | It is reported that ultra-fine dynamic ejections along magnetic loops of an active region originate from intergranular lanes and they are associated with subsequent heating in the corona. as continuing work, we analyze the same set of data but focus on a quiet region and the overlying euv/uv emission as observed by the atmospheric imaging assembly (aia) on board solar dynamics observatory (sdo). we find that there appear to be dark patches scattered across the quiet region and the dark patches always stay along intergranular lanes. over the dark patches, the average uv/euv emission at 131, 171, 304 and 1600 angstrom (middle temperature) is more intense than that of other regions and euv brightness is negatively correlated with 10830 angstrom intensity, though, such a trend does not exist for high temperature lines at 94, 193, 211 and 335 angstrom. for the same quiet region, where both tio 7057 angstrom broad band images and 10830 angstrom filtergrams are available, contours for the darkest lane areas on tio images and dark patches on 10830 angstrom filtergrams frequently differ in space. the results suggest that the dark patches do not simply reflect the areas with the darkest lanes but are associated with a kind of enhanced absorption (ea) at 10830 angstrom. a strict definition for ea with narrow band 10830 angstrom filtergrams is found to be difficult. in this paper, we define enhanced absorption patches (eaps) of a quiet region as the areas where emission is less than similar to 90% of the mean intensity of the region. the value is equivalent to the average intensity along thin dark loops connecting two moss regions of the active region. a more strict definition for eaps, say 88%, gives even more intense uv/euv emission over those in the middle temperature range. the results provide further observational evidence that energy for heating the upper solar atmosphere comes from the intergranular lane area where the magnetic field is constantly brought in by convection motion in granules. |
| 语种 | 英语 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/29745]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.中国科学院大学 2.Big Bear Solar Observatory, NJIT 3.中国科学院云南天文台 4.中国科学院紫金山天文台 |
| 推荐引用方式 GB/T 7714 | Hong Zhenxiang,Yang Xu,Wang Ya,et al. locationofenergysourceforcoronalheatingonthephotosphere[J]. researchinastronomyandastrophysics,2017,17(3):10. |
| APA | Hong Zhenxiang,Yang Xu,Wang Ya,Ji Kaifan,Ji Haisheng,&Cao Wenda.(2017).locationofenergysourceforcoronalheatingonthephotosphere.researchinastronomyandastrophysics,17(3),10. |
| MLA | Hong Zhenxiang,et al."locationofenergysourceforcoronalheatingonthephotosphere".researchinastronomyandastrophysics 17.3(2017):10. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。