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XRISM Observations of A1795: Evidence for Low Turbulence and Resonant Scattering

  • Authors: Arnab Sarkar, Eric D. Miller, Brian McNamara, Helen Russell, Kotaro Fukushima, Mark Bautz, Yutaka Fujita, Catherine E. Grant, François Mernier, Michael A. McDonald, Naomi Ota, Ayşegül Tümer, Daniel Wik

Arnab Sarkar et al 2026 The Astrophysical Journal Letters 1005 .

  • Provider: AAS Journals

Caption: Figure 8.

Resolve spectrum extracted from the central FOV (black data), as shown in Figure 1, fitted with a two-temperature CIE model (red curve) accounting for resonant scattering of optically thick lines. The shaded region shows the variation of Fe xxv-Heα y-line emissivity due to atomic data uncertainties in the transition probability and collision strength.

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