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, while that through your chest is\(N_\mathrm{H}\sim 10^{24}~\hbox {cm}^{-2}\) Note that many X-ray detectors, including those used onChandraandXMM-Newtonto perform cosmic surveys,simultaneouslyobtain imaging, spectral, and timing data for the collected photons (e.g., Strüder et al...