Reflionx - reflection by a constant density illuminated atmosphereThe emergent ("reflected") spectrum is calculated for an optically-thick atmosphere (such as the surface of an accretion disk) of constant density illuminated by radiation with a power-law spectrum. The illumination has a high-energy exponential cutoff with e-folding energy fixed at 300 keV and a sharp lower energy cutoff at 0.1 keV. The reflected spectrum is calculated over the range 1 eV to 1 MeV. Non-LTE calculations provide temperature and ionization structures for the gas that are consistent with the local radiation fields. In addition to fully-ionized species, the following ions are included in the calculations: C III-VI, N III-VII, O III-VIII, Ne III-X, Mg III-XII, Si IV-XIV, S IV-XVI, and Fe VI-XXVI. Note that the physical situation is similar to that in the "constant density ionised disc models". The calculations in the new model include a much broader range of elements and energetically-important ionization states.
Keith Arnaud, Lab. for High Energy Astrophysics, NASA/Goddard Space Flight Center HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public Last modified: Tuesday, 30-Jul-2013 13:29:49 EDT The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 20 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. The survey is open until Dec 18, 2023. We thank you in advance for your valuable feedback. |