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arXiv 0909.2529astro-ph.SR
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Hinode/XRT和RHESSI探测非耀斑日冕热等离子体的比较

Comparison of Hinode/XRT and RHESSI detection of hot plasma in the non-flaring solar corona

F. Reale, J. M. McTiernan, P. Testa

摘要:

我们比较了观测的非耀斑太阳日冕同时与Hinode/XRT和RHESSI。2006年11月12日分析的日冕主要由一个单一的活动区。对排放措施进行了比较。我们推导出发射测量分布与温度的整个活动区从多滤波器XRT数据。我们检查的兼容性与总排放量的测量值估计的流量与RHESSI测量,如果排放来自等温等离子体。我们发现,RHESSI和XRT数据分析一致指向存在一个次要的排放测量组件峰值在log T ~ 6.8-6.9。XRT和RHESSI结果之间的差异在几个因素之内,表明交叉一致性的可接受水平。

英文摘要:

We compare observations of the non-flaring solar corona made simultaneously with Hinode/XRT and with RHESSI. The analyzed corona is dominated by a single active region on 12 November 2006. The comparison is made on emission measures. We derive emission measure distributions vs temperature of the entire active region from multifilter XRT data. We check the compatibility with the total emission measure values estimated from the flux measured with RHESSI if the emission come from isothermal plasma. We find that RHESSI and XRT data analyses consistently point to the presence of a minor emission measure component peaking at log T ~ 6.8-6.9. The discrepancy between XRT and RHESSI results is within a factor of a few and indicates an acceptable level of cross-consistency.

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