4.5~7.5 GHz太阳射电频谱观测数据集(2002~2013年)  

A dataset observed by solar radio spectrometer at 4.50–7.50 GHz(2002–2015)

作　　者：杨哲睿[1] 宁宗军[1] 卢磊 孟璇[1] 高娜[1] 刘梁[1] Yang Zherui;Ning Zongjun;Lu Lei;Meng Xuan;Gao Na;Liu Liang

机构地区：[1]中国科学院紫金山天文台,南京210008

出　　处：《中国科学数据（中英文网络版）》2016年第2期30-38,共9页China Scientific Data

基　　金：国家自然科学基金项目(2014),“太阳活动的高分辨观测与研究”,11333009;国家自然科学基金项目(2015),“太阳耀斑和亮点中双向出流的成像观测研究”,11573072;中国科学院天文专项支持项目(1998–2012年),“紫金山天文台太阳射电望远镜的观测与维护”

摘　　要：太阳是离地球最近的恒星,观测和认识太阳一直是基础天文研究的重要部分。观测发现,太阳自身有大气层,这个大气层由于高温而几乎全部电离成等离子体,加上自生磁场的变化而存在复杂多变的太阳爆发现象,其中最典型的就是太阳耀斑爆发和日冕物质抛射。观测和研究太阳爆发现象的基本规律和理解其中的物理过程是太阳物理的研究前沿。太阳爆发现象的同时伴随着各波段射电强度的显著变化,对太阳进行不同频率光的射电强度的观测,获取其频谱数据,对太阳爆发现象的研究有重要的意义。太阳射电望远镜可实现宽带多频率同时观测,工作频率在4.5~7.5 GHz,共300个通道,采集速度10 M/s,观测的是这些频率上的太阳射电流量随时间变化的数据。观测得到了2002~2013年的射电频谱数据,已经积累200多个太阳耀斑爆发时期的频谱数据。The sun is the nearest star to Earth.For long,solar observations have been an important component of fundamental astronomy researches.Earlier researches show that the sun has its own atmosphere which has been almost entirely ionized to plasma due to its high temperature.Changes of its built-in magnetic fields could result in spontaneous and complex solar eruption phenomena,such as the solar flare and the coronal mass ejections(CMEs).Observations on these eruptions and understandings of their physical processes have been the frontiers of solar physics.Since solar eruption is often accompanied by significant changes in the radiation intensities of different frequency bands,multi-band observations are very important for the study of solar eruption phenomena.The spectrometer at Purple Mountain Observatory could carry out multi-channel solar observations in radio frequency band.Its working frequency ranges from 4.5 GHz to 7.5 GHz,which was divided into 300 channels.It has a temporal resolution of 5 ms and its sampling rate reaches 10 M/s.The spectrometer observed more than 200 solar flares,and our online database stores the data observed from 2002 to 2015.

关 键 词：太阳射电 多通道 频谱图片 IDL FITS 

分 类 号：P182.24[天文地球—天文学]