Pulsation frequencies offer a unique opportunity to probe the interior of hot B subdwarf (sdB) stars. In this study, we present the results by analysing the pulsation properties of the sdB star TIC 293165262 using the TESS 21-sector photometry in Cycles 1, 3 and 5. Fifteen significant frequencies were detected within the frequency range of <500 \(\mu \)Hz, all of which were identified as low-frequency g-mode oscillations. By analysing the two resolved incomplete multiplets with spacings of \(\sim \) 0.056 and \(\sim \) 0.099 \(\mu \)Hz, we derived a rotational period of \(99.8\pm 1.8\) days, indicating that TIC 293165262 is a relatively slow rotating single sdB star. The period spacings of \(\ell =1\) and \(\ell =2\) sequences were determined as 264 and 154 s, respectively, which resulted in a mode discriminant of seven \(\ell =1\) modes, three \(\ell =2\) modes and two satisfied the both. During the five observational segments, the frequency and amplitude variations of six significant pulsations were clearly observed, revealing nonlinear weak mode interactions. These linear and nonlinear properties of pulsations in TIC 293165262 highlighted the continuous provision of high-quality photometry for pulsating sdB stars by the TESS mission.

脉动频率为探测热 B 亚矮星 (sdB) 恒星的内部提供了独特的机会。在本研究中，我们通过使用 TESS 21 扇区光度测量在周期 1、3 和 5 中分析 sdB 星 TIC 293165262 的脉动特性来呈现结果。在 <500 \(\mu 的频率范围内检测到 15 个重要 频率\) Hz，所有这些都被确定为低频 g 模式振荡。通过分析间隔为\(\sim \)  0.056 和\(\sim \)  0.099  \(\mu \) Hz 的两个解析的不完全多重态，我们得出了\(99.8\pm 1.8\)天的自转周期，表明TIC 293165262 是一颗旋转速度相对较慢的单 sdB 恒星。\(\ell =1\)和\(\ell =2\)序列的周期间隔分别确定为 264 和 154 s，这导致了 7 个\(\ell =1\)模式的模式判别式，三种\(\ell =2\)模式，两种模式同时满足两者。在五个观测段中，清晰地观察到六个显着脉动的频率和幅度变化，揭示了非线性弱模式相互作用。TIC 293165262 中脉动的这些线性和非线性特性凸显了 TESS 任务为脉动 sdB 星持续提供高质量的光度测量。