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The USINE cosmic-ray propagation code and recent results from an MCMC analysis

机译：USINE COSMIC射线传播码和MCMC分析的最新结果

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We implemented a Markov Chain Monte Carlo technique to estimate the probability-density functions of thecosmic-ray transport and source parameters in a diffusion model. From the measurement of the B/C ratio and radioactivecosmic-ray clocks, we calculate their probability density functions, with a special emphasis on the halo size L of theGalaxy and the local underdense bubble of size rh. We also derive the mean, best-fit model parameters and 68% confi-dencelevel for the various parameters, and the envelopes of other quantities. Finally, we check the compatibility of theprimary fluxes with the transport parameters derived from the B/C analysis and then derive the source parameters (slope,abundance, and low-energy shape). We conclude that the size of the diffusive halo depends on the presence/absence ofthe local underdensity damping effect on radioactive nuclei. Models based on fitting B/C are compatible with primaryfluxes. The different spectral indices for the propagated primary fluxes up to a few TeV/n can be naturally ascribed totransport effects only, implying universality of elemental source spectra. The analysis relies on the USINE propagationpackage.
机译：我们实施了马尔可夫链蒙特卡罗技术，以估计扩散模型中的Thecosmic射线传输和源参数的概率密度函数。从B / C比和放射性透射光线时钟的测量，我们计算其概率密度函数，特别强调晕圈的晕垢和大小RH的局部欠孔泡沫。我们还导出了各种参数的平均值，最适合的模型参数和68％Conci-Dencelevel，以及其他数量的信封。最后，我们检查具有从B / C分析的传输参数的运输参数的兼容性通量，然后导出源参数（斜率，丰度和低能量形状）。我们得出结论，扩散晕的大小取决于对放射性核的局部不良密度阻尼效应的存在/不存在。基于拟合B / C的模型与小型氟化物兼容。用于传播的主要通量的不同光谱指数高达几个TEV / N可以自然地归因于TOTRANSPORT效应，这意味着元素源光谱的普遍性。分析依赖于USINE传播包装。

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