We present torus modelling for the X-ray spectra of a nearby narrow-line Seyfert 1 galaxy Mrk 1239 (z = 0.0199), based on archival Suzaku, NuSTAR, and Swift observations. Our model suggests very soft intrinsic power-law continuum emission of Γ ≈ 2.57 in 2019 and Γ ≈ 2.98 in 2007. By applying a correction factor to the unabsorbed X-ray luminosity, we find that Mrk 1239 is accreting near or around the Eddington limit. Our best-fitting spectral model also suggests a torus with a column density of log (NH,ave/ cm−2) = 25.0 ± 0.2 and a high covering factor of 0.90 in Mrk 1239, indicating that this source is most likely to be viewed almost face-on with i ≈ 26°. Our line of sight might cross the edge of the torus with NH,los = 2–5 × 1023 cm−2. The high Eddington ratio and the high line-of-sight column density makes Mrk 1239 one of the active galactic nuclei that are close to the limit where wind may form near the edge of the torus due to high radiation pressure.

中文翻译：

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隐藏在尘埃中的高吸积低质量黑洞：朱雀和 NuSTAR 对 NLS1 Mrk 1239 的观测

我们基于档案 Suzaku、NuSTAR 和 Swift 的观测，为附近的窄线 Seyfert 1 星系 Mrk 1239 (z = 0.0199) 的 X 射线光谱提供了环面建模。我们的模型表明 2019 年 Γ ≈ 2.57 和 2007 年 Γ ≈ 2.98 的非常软的内在幂律连续发射。通过对未吸收的 X 射线光度应用校正因子，我们发现 Mrk 1239 在爱丁顿极限附近或附近吸积. 我们的最佳拟合光谱模型还表明，在 Mrk 1239 中，柱密度为 log (NH,ave/ cm−2) = 25.0 ± 0.2 和 0.90 的高覆盖因子的环面，表明该源最有可能被查看几乎正面与 i ≈ 26°。我们的视线可能会以 NH,los = 2-5 × 1023 cm-2 穿过环面的边缘。