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. 2021 Jul 7;52(3):407–437. doi: 10.1007/s10686-021-09764-2

Fig. 2.

Fig. 2

A simulated Athena/X-IFU spectrum of a medium bright (fluence: 4 × 10− 7 erg cm− 2) z = 7 GRB afterglow characterized by deep resonant lines from the ISM of the GRB host galaxy. An effective intrinsic column density of 2 × 1022 cm− 2 was assumed [credit: Athena/X-IFU Consortium]