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Coronal Loop Temperatures Obtained with Hinode XRT: A Toothpaste-Tube Analogy

机译：用Hinode XRT获得冠状环温度：牙膏管类比

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Multi-filter data observed by the Hinode X-Ray Telescope on 10 and 2007 July 13 were used to investigate the thermal properties of coronal loops. At several positions along the loops, differential emission measure analy-sis revealed a strong peak at log T = 6.1 (which would predict the presence of a TRACE loop) and a much weaker hot component (which we speculated might be a nanoflare signature). TRACE observations, however, did not reveal the predicted loop, so we were forced to re-examine our assumptions. Good differ-ential emission measure results require high- and low-temperature constraints, but our data sets did not contain images from the thinnest and thickest filters, which would be most likely to provide these constraints. Since differential emis-sion measure programs aim to match observed intensities and get low values of x~2, they may place emission measure in high- and low-temperature bins where it does not belong. We draw an analogy to squeezing the toothpaste tube in the middle. Our analysis was repeated for a loop observed on 2007 May 13 when the instrument acquired data in 11 filters and filter combinations, including both the thinnest and thickest filters. These results show that the loop is multi-thermal, with significant emission measure in the range 6.0 < log T < 6.5.
机译：Hinode X射线望远镜在10和2007年7月13日观察到的多过滤器数据用于研究冠状环的热性质。在沿着环的几个位置，差分发射测量分析 - SIS在log t = 6.1处揭示了强峰（其预测痕量环的存在），并且较弱的热部件（我们推测可能是纳米污迹签名）。然而，跟踪观察没有揭示预测的循环，因此我们被迫重新检查我们的假设。良好的差异偏差措施结果需要高温和低温约束，但我们的数据集不包含来自最薄和最厚的滤波器的图像，这最有可能提供这些约束。由于差分EMIS-SION测量计划旨在匹配观察到的强度并获得低值的X〜2，因此它们可能会在它不属于的高温箱中放置排放量度。我们画一个类比在中间挤压牙膏管。当仪器在11个过滤器和滤波器组合中获取数据时，我们分析为2007年5月13日观察到的循环，包括最薄和最厚的滤波器。这些结果表明，环路是多热量的，在6.0

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