首页     开始     To Survive in the Universe    
Inhabited Sky
    News@Sky     天文图片     收集     论坛     Blog New!     常见问题     新闻     登录  

HD 17644


目录

图像

上传图像

DSS Images   Other Images


相关文章

Analysis of the flare of May 16th, 1981 with a complex space-time structure using optical, X-ray data and radio observations
A comprehensive analysis of the flare event of May 16, 1981 was carriedout using burst records, heliograms, and dynamic spectra of radioemission in the frequency band 1000-45 MHz. Observations of X-rayemission obtained from the Prognoz-8 satellite were also used in theanalysis. Attention is given to the location and dynamic characteristicsof the H-alpha knots accompanied by a complicated multicomponent timeprofile and a strongly varying spectrum of X-ray and microwave bursts. Asubstantial change in the frequency spectrum of the microwave emissionwas observed during the development of the flare, with the maximumshifting towards the short-wave part of the cm band when H-alphaemission approached the sunspots. In the pre-maximum phase of the flare,sharp changes in the rate of increase of soft X-rays were correlatedwith the brightening of existing and upsurging new knots of H-alphaemission. The radio spectra for different frequency bands are reproducedin photographic form.

提交文章


相关链接

  • - 没有找到链接 -
提交链接


下列团体成员


观测天体数据

星座:時鐘座
右阿森松:02h48m01.27s
赤纬:-51°48'55.7"
视星:9.216
右阿森松适当运动:23.5
赤纬适当运动:12.1
B-T magnitude:9.892
V-T magnitude:9.272

目录:
适当名称   (Edit)
HD 1989HD 17644
TYCHO-2 2000TYC 8057-230-1
USNO-A2.0USNO-A2 0375-00898813
HIPHIP 13075

→ 要求更多目录从vizier