Strangeon star atmosphere model.
NOTE: This model is now in the Xspec release and this page is superceded by the Xspec manual
The strangeon star atmosphere (ssa) model describes the radiation from
interstellar medium accreted plasma atmosphere on a strangeon star
surface and its spectrum. The ssa could simply be regarded as the
upper layer of a normal neutron star because the radiation from
strangeon matter can be neglected (Wang et al. 2017, 1705.03763). The atmosphere
is in radiative, thermal equilibrium and two-temperature. The ssa
spectrum is based on bremsstrahlung from an extremely thin hydrogen
plasma. More details of the ssa model are described in Wang et al.
(2017, ApJ, 837, 81).
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, 14-Feb-2023 16:41:50 EST 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. |