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The mission result description reports a broad asymmetric iron K-alpha profile with a low-energy wing relative to the approximately $6.4\mathrm{keV}$ rest energy. It discusses gravitational redshift and the relativistic Doppler effect in a disk model. The page presents the original observational result and its interpretation, rather than establishing that every possible absorption or illumination model is excluded.

Section 7, SIS, in the institutional ASCA technical description, Appendix E. Describes silicon electron-hole generation at approximately 3.65 eV per pair, clocked transfer, collection losses and imaging spectroscopy.

Version 2.0; also called the ABC Guide. Institutional technical source, ASCA Guest Observer Facility, NASA/Goddard. Section 4, SIS Issues: heasarc.gsfc.nasa.gov/docs/asca/abc/node5.html

§4.7 gives the Fano factor, read-noise contribution and FWHM energy-resolution expression; the numerical detector examples are ASCA-specific, not universal CCD specifications.

High Energy Astrophysics Picture of the Week. Institutional astronomy explainer. Webpage publication date unestablished.