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High Resolution Studies of Solar Flares, Active Regions, Prominences and the Quiet Sun at Centimeter and Millimeter Wavelengths

High Resolution Studies of Solar Flares, Active Regions, Prominences and the Quiet Sun at Centimeter and Millimeter Wavelengths
厘米和毫米波长下太阳耀斑、活动区域、日珥和安静太阳的高分辨率研究
批准号:
9612738
负责人:
Mukul Kundu
金额:
$50.73万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1997
资助国家:
美国
项目状态:
已结题
起止时间:
1997-03-01 至 2001-02-28

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中文摘要
翻译
这个项目继续研究许多可以通过无线电观测解决的太阳物理领域。PI主要使用三台射电望远镜(即国家射电天文台的超大阵列,位于哈特克里克的伯克利-伊利诺斯-马里兰毫米阵列和Nobeyama射电日光照相仪),将继续分析过去几年观测到的耀斑,以及适合当前太阳周期最小阶段的非耀斑研究。具体来说,PI将:(1)将光球磁场与高质量的VLA图像进行比较,从外推的日冕磁场推断出强电流的存在,从而确定活动区域日冕的磁场;(2)研究与微波回旋共振发射相关的强太阳黑子磁场上x射线日冕的大尺度结构;(3)详细研究肢体变暗、活跃区细丝通道、亮纹和网络;(4)研究微波活跃区演化与耀斑生产力的关系;(5)利用同时获得的成像数据研究II型爆发的x射线对应体;(6)研究x射线、微波中的长丝喷发及其与日冕物质抛射的关系;(7)观测与动态日冕x射线射流相关的微波和米波射电发射。
英文摘要
This project continues studying many areas of solar physics able to be addressed by radio observations. Using primarily three radio telescopes (i.e., the Very Large Array of the National Radio Astronomy Observatory, the Berkeley-Illinois-Maryland Millimeter Array at Hat Creek, and the Nobeyama Radioheliograph), the PI will continue analyzing flares observed over the past few years, and non-flare studies appropriate to the current minimum phase of the solar cycle. Specifically, the PI will: (1) compare photospheric magnetic fields with high-quality VLA images, deducing the presence of strong currents from extrapolated coronal fields in determining the magnetic field in the active region corona; (2) study the large scale structure of the X-ray corona above strong sunspot magnetic fields associated with microwave gyroresonance emission; (3) study limb darkening, active region filament channels, bright prints and networks in detail; (4) study evolution of active regions in microwaves in relation to their flare productivity; (5) use simultaneously obtained imaging data to study the X-ray counterparts of type II bursts; (6) study filament eruptions in X-rays, microwaves and their relations to coronal mass ejections; and (7) observe both microwave and meterwave radio emission associated with dynamic coronal X-ray jets.
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High Resolution Studies of Solar Flares, Active Regions, Prominences, and the Quiet Sun at Centimeter and Millimeter Wavelengths
High Resoultion Studies of Solar Flares, Active Regions, Prominences and the Quiet Sun at Centimeter and Millemeter Wavelengths
  • 批准号:
    9909809
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $48.22万
  • 财政年份:
    2000
  • 负责人:
    Mukul Kundu
  • 依托单位:
NSF-CGP Fellowship: Studies of the Solar Corona Using Simultaneous Radio, X-ray and EUV Observations
NSF-CGP Fellowship: Studies of the Solar Corona Using Simultaneous X-ray and Radio Observations
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