银河系中cosmic-ray轻子的多波长约束
Multi-wavelength constraints on cosmic-ray leptons in the Galaxy
摘要：
宇宙射线（CR）与银河系中的气体、辐射场和磁场相互作用，产生从无线电到伽马射线的漫发射。这种漫发射的观测和详细的预测比较是揭示CR属性和研究CR传播的有力工具。我们提出了各种GALPROP CR传播方案的基础上，目前的CR测量。预测的同步辐射相比，无线电调查，和同步辐射温度图从WMAP和普朗克，而预测的星际伽马射线发射相比，费米-LAT观测。我们展示了如何多波长观测的银河系漫发射可以用来帮助限制CR轻子光谱和传播。最后，我们将讨论如何无线电和微波数据可用于理解银河系的扩散伽玛射线发射观测费米-LAT，特别是在低能量。
英文摘要：
Cosmic rays (CRs) interact with the gas, the radiation field and the magnetic field in the Milky Way, producing diffuse emission from radio to gamma rays. Observations of this diffuse emission and comparison with detailed predictions are powerful tools to unveil the CR properties and to study CR propagation. We present various GALPROP CR propagation scenarios based on current CR measurements. The predicted synchrotron emission is compared to radio surveys, and synchrotron temperature maps from WMAP and Planck, while the predicted interstellar gamma-ray emission is compared to Fermi-LAT observations. We show how multi-wavelength observations of the Galactic diffuse emission can be used to help constrain the CR lepton spectrum and propagation. Finally we discuss how radio and microwave data could be used in understanding the diffuse Galactic gamma-ray emission observed with Fermi-LAT, especially at low energies.
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