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BROADBAND MEASUREMENTS OF FACULAR PHOTOMETRIC CONTRAST USING THE SOLAR BOLOMETRIC IMAGER

机译:太阳能光度法测量光度差的宽带光谱

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摘要

We present the first photometric measurements of solar faculae in broadband light. Our measurements were made during the recent flight of the Solar Bolometric Imager (SBI), a 30 cm balloon-borne telescope that imaged the Sun with a spectrally constant response between about 0.31 and 2.6 μm. Our curve of facular contrast versus limb distance agrees well with values obtained by the blackbody correction of monochromatic measurements. This decreases uncertainty in the facular irradiance contribution, which limits searches for other possible mechanisms of solar luminosity variation, besides changes of photospheric magnetism.
机译:我们介绍了宽带光下太阳微透镜的首次光度测量。我们的测量是在30厘米气球式望远镜Solar Bolometric Imager(SBI)的近期飞行中进行的,该望远镜以约0.31至2.6μm的光谱常数响应对太阳成像。我们的面部对比度与肢体距离的关系曲线与通过单色测量的黑体校正获得的值非常吻合。这减少了面部辐照度贡献的不确定性,除了光球磁性的变化外,它限制了对太阳光度变化的其他可能机制的搜索。

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