论文标题
温度和差分排放测量湍流太阳活性区环中的轮廓
Temperature and Differential Emission Measure Profiles in Turbulent Solar Active Region Loops
论文作者
论文摘要
我们在库仑碰撞，湍流散射或两者的组合中驱动热导电传输的方案中静态冠状动力区域环的温度结构。 （在最后一个情况下，碰撞散射在较低水平的较低水平的温度低且密度较高的较低水平上占主导地位，而湍流散射则在较高温度/较低的密度下占主导地位。）温度谱及其相应的差分发射度量分布是计算和与较早的尺度相比，与循环温度相比，与较早的尺度相比，将其与循环温度相比。结果表明，与完全碰撞主导的情况相比，与循环缩放定律和沿环路沿线的温度/密度曲线相比，变化非常大。他们还表明，在循环中相对较低的温度下，众所周知的差分排放度量过量可能是由于平坦的温度梯度（在指定温度范围内增加的材料量增加），这是由于循环上部区域中湍流散射的占主导地位而导致的。
We examine the temperature structure of static coronal active region loops in regimes where thermal conductive transport is driven by Coulomb collisions, by turbulent scattering, or by a combination of the two. (In the last case collisional scattering dominates the heat transport at lower levels in the loop where temperatures are low and densities are high, while turbulent scattering dominates the heat transport at higher temperatures/lower densities.) Temperature profiles and their corresponding differential emission measure distributions are calculated and compared to observations, and earlier scaling laws relating the loop apex temperature and volumetric heating rate to the loop length and pressure are revisited. Results reveal very substantial changes, compared to the wholly collision-dominated case, to both the loop scaling laws and the temperature/density profiles along the loop. They also show that the well-known excess of differential emission measure at relatively low temperatures in the loop may be a consequence of for by the flatter temperature gradients (and so increased amount of material within a specified temperature range) that results from the predominance of turbulent scattering in the upper regions of the loop.
