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Hubble Space Telescope Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS 0745-191

  • Authors: Julie Hlavacek-Larrondo, Hyunseop Choi, 섭 최현, Minghao Guo, 浩 明, Annabelle Richard-Laferrière, Carter Rhea, Marine Prunier, Helen Russell, Andy Fabian, Jonelle L. Walsh, Marie-Joëlle Gingras, Brian McNamara, Steve Allen, André-Nicolas Chené, Alastair Edge, Marie-Lou Gendron-Marsolais, Michael McDonald, Priyamvada Natarajan, Jeremy Sanders, James F. Steiner, Benjamin Vigneron, Anja von der Linden

Julie Hlavacek-Larrondo et al 2025 The Astrophysical Journal 980 .

  • Provider: AAS Journals

Caption: Figure 17.

The mass cooling rate (Mdot) and intrinsic column density (NH), expressed in units of 1022 cm−2, were derived from a Hidden Cooling Flow model fit to the XMM RGS spectrum of PKS 0745-191. This analysis reveals that the XMM RGS data support the presence of substantial cooling within the system. Specifically, the inferred mass cooling rate is Mdot ﹩=33{2}_{-80}^{+88}﹩ M⊙ yr−1, indicating active and significant cooling of gas at the core of PKS 0745-191. A Galactic column density of 4.2 × 1021 cm−2 has been applied (J. S. Sanders et al. 2014).

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