论文标题
使用模拟研究多波强对数函数：MRK 421案例
Investigating Multiwavelength Lognormality with Simulations : Case of Mrk 421
论文作者
论文摘要
Blazars是高度可变的，并且显示复杂的特征。一个关键特征是通量概率分布函数或磁通pdf，其形状取决于基本的物理过程驱动变异性的形式。 Bl lacertae MRK 421是电磁频谱中最亮，最可变性的大麻之一。据报道，从无线电到观察到的通量的伽马射线直方图的整个频谱中的对数态度的提示。这意味着潜在的机制可能不符合“标准”添加剂，多区域的图片，但可能会具有乘法过程。通过使用时间序列模拟测试不同波长的观察到的灯曲线来研究这一点。我们发现，模拟揭示了一个更复杂的情况，而不是单个对数正态分布，该分布解释了MRK 421的多波长光曲线。
Blazars are highly variable and display complex characteristics. A key characteristic is the flux probability distribution function or flux PDF whose shape depends upon the form of the underlying physical process driving variability. The BL Lacertae Mrk 421 is one of the brightest and most variable blazars across the electromagnetic spectrum. It has been reported to show hints of lognormality across the spectrum from radio to gamma-ray histograms of observed fluxes. This would imply that the underlying mechanisms may not conform to the "standard" additive, multi-zone picture, but could potentially have multiplicative processes. This is investigated by testing the observed lightcurves at different wavelengths with time-series simulations. We find that the simulations reveal a more complex scenario, than a single lognormal distribution explaining the multiwavelength lightcurves of Mrk 421.
