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First Look at the High-resolution X-Ray Spectra in the Highly Absorbed High-mass X-Ray Binary IGR J16318−4848 with Chandra

  • Authors: Pragati Pradhan, David P. Huenemoerder, Biswajit Paul, Roberta Amato, Ralf Ballhausen, Claude Canizares, Joel B. Coley, Camille M. Diez, Felix Fürst, Poshak Gandhi, Victoria Grinberg, Sean Gunderson, Richard Ignace, Peter Kretschmar, Maximilian Lorenz, Christian Malacaria, Antonios Manousakis, Silvia Martínez-Núñez, Katja Pottschmidt, Jérôme Rodriguez, Richard E. Rothschild, José M. Torrejón, Bert Vander Meulen, Jörn Wilms

Pragati Pradhan et al 2026 The Astrophysical Journal 1004 .

  • Provider: AAS Journals

Caption: Figure 3.

Zero-order spectra (model in orange) and HETG spectra (model in green), along with their corresponding residuals in the same colors, are shown stacked for all observations. Each set is fitted with an absorbed power-law plus (top) three Gaussian lines with no Compton shoulder, (middle) four Gaussian lines, including a Compton shoulder modeled as an additional Gaussian component, and (bottom) three Gaussian lines, with the Compton shoulder modeled using a box function.

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