红类星体周围扩展的多波长模糊：action中辐射反馈的观测现象
Extended multiwavelength fuzz around red quasars: observational appearance of radiative feedback in action
摘要：
红色类星体是一个群体，其特征是在紫外线下显著的消光，这可以通过在几kpc尺度上吸收尘埃气体来解释。我们表明，增强的辐射压力驱动的尘埃气体超音速膨胀，并产生冲击。冲击通过第一费米加速使电子成为相对论性的。作为冲击波加速、同步辐射和逆康普顿散射的平衡，电子的最大洛伦兹因子为$\sim 10^6$。受冲击的星际介质表现为扩展的多波长模糊，其中电子的同步辐射在近红外或紫外波段达到峰值，逆康普顿散射在1.0 GeV $-$ 0.1 TeV左右。如果红色类星体可能是星系演化链中的某个阶段，那么未来的模糊多波长图像将为研究辐射反馈的细节提供新的线索。
英文摘要：
Red quasars are a population, characterized by significant extinction in UV, which could be explained by absorption of dusty gas on a scale of a few kpc. We show that the enhanced radiation-pressure drives the dusty gas to supersonically expand and produces shocks. The shocks energize electrons to be relativistic via the first Fermi acceleration. As a balance of shock acceleration and synchrotron emission and inverse Compton scattering, the maximum Lorentz factor of the electrons reaches as $\sim 10^6$. The shocked interstellar medium appears as extended multiwavelength fuzz, in which synchrotron emission from the electrons peaks at near infrared or UV bands and inverse Compton scattering around 1.0GeV$-$0.1TeV. Future multiwavelength images of the fuzz would provide new clues to study the details of radiative feedback if red quasars could be a certain phase in evolutionary chains of galaxies.
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