Fanaroff-Riley (FR) 0 radio galaxies compose a new class of radio galaxies, which are usually weaker but much more numerous than the well-established class of FR 1 and FR 2 galaxies. The latter classes have been proposed as sources of the ultra-high-energy cosmic rays (UHECRs) with energies reaching up to $\sim {10}^{20}$ eV. Based on this conjecture, the possibility of UHECR acceleration and survival in an FR 0 source environment is examined in this work.

In doing so, an average spectral energy distribution (SED) based on data from the FR 0 catalog (FR0CAT) is compiled. The resulting photon fields are used as targets for UHECRs, which suffer from electromagnetic pair production, photo-disintegration, photo-meson production losses, and synchrotron radiation. Multiple mechanisms are discussed to assess the UHECR acceleration probability, including Fermi-I order and gradual shear accelerations, and particle escape from the source region.

This work shows that in a hybrid scenario, combining Fermi and shear accelerations, FR 0 galaxies can contribute to the observed UHECR flux, as long as ${\Gamma }_{\mathrm{j}}\gtrsim 1.6,$ where shear acceleration starts to dominate over escape. Even in less optimistic scenarios, FR 0s can be expected to contribute to the cosmic-ray flux between the knee and the ankle. Our results are relatively robust with respect to the realized magnetic turbulence model and the speed of the accelerating shocks.

Fanaroff-Riley（FR）0射电星系构成一类新的射电星系，它们通常比成熟的FR 1和FR 2星系弱，但数量却很多。后者的类别已被提出作为超高能宇宙射线（UHECR）的来源，其能量可达$〜{10}^{20}$ eV。基于此推测，在这项工作中研究了UHECR在FR 0源环境中加速和生存的可能性。

这样做时，将基于FR 0目录（FR0 CAT）中的数据编译平均光谱能量分布（SED）。产生的光子场被用作UHECR的靶标，UHECR受到电磁对产生，光分解，光子产生损失和同步加速器辐射的困扰。讨论了多种机制来评估UHECR加速概率，包括费米一阶和逐渐剪切加速，以及粒子从源区域逸出。

这项工作表明，在混合情况下，结合费米力和剪切加速度，FR 0星系可以有助于观测到的UHECR通量，只要 ${\Gamma }_{\mathrm{Ĵ}}\gtrsim 1.6，$剪切加速度开始主导逃逸。即使在不太乐观的情况下，也可以预期FR 0有助于膝盖和脚踝之间的宇宙射线通量。关于已实现的磁湍流模型和加速冲击的速度，我们的结果相对可靠。