CLUMPY：Jeans分析，来自暗物质（子）结构的$γ$射线和中微子通量
CLUMPY: Jeans analysis, $γ$-ray and neutrino fluxes from dark matter (sub-)structures
摘要：
我们提出了一个更新的CLUMPY代码的天体物理J-因子的计算（从暗物质湮灭/衰变）的任何银河系或河外的暗物质晕，包括子结构：晕到晕浓度分散现在可以启用，助推因子可以包括几个层次的子结构，和三轴性是一个新的选择暗物质晕。这个新版本利用CFITSIO和HEALPix库，提出使用HEALPix像素化方案的FITS输出图。来自一般湮灭/衰变谱的$γ$射线和$ν$信号的天空图现在是CLUMPY的直接输出。利用HEALPix例程，通过用户定义的仪器高斯光束进行平滑，并计算地图的角功率谱，现在是可能的。除了这些改进之外，主要的新颖性是实施了Jeans分析模块，以从松弛球形系统中的运动学数据获得暗物质密度分布（例如，矮球状星系）。该代码还接口的伟大的工具包设计的马尔可夫链蒙特卡罗分析，从概率密度函数和可信区间可以得到速度分散，暗物质配置文件，和J-因子。
英文摘要：
We present an update of the CLUMPY code for the calculation of the astrophysical J-factors (from dark matter annihilation/decay) for any Galactic or extragalactic dark matter halo including substructures: halo-to-halo concentration scatter may now be enabled, boost factors can include several levels of substructures, and triaxiality is a new option for dark matter haloes. This new version takes advantage of the CFITSIO and HEALPix libraries to propose FITS output maps using the HEALPix pixelisation scheme. Skymaps for $γ$-ray and $ν$ signals from generic annihilation/decay spectra are now direct outputs of CLUMPY. Making use of HEALPix routines, smoothing by a user-defined instrumental Gaussian beam and computing the angular power spectrum of the maps is now possible. In addition to these improvements, the main novelty is the implementation of a Jeans analysis module, to obtain dark matter density profiles from kinematic data in relaxed spherical systems (e.g., dwarf spheroidal galaxies). The code is also interfaced with the GreAT toolkit designed for Markov Chain Monte Carlo analyses, from which probability density functions and credible intervals can be obtained for velocity dispersions, dark matter profiles, and J-factors.
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