Work

Dialog Concerning the Two Shock Codes

Year: 2025

Type: article

Abstract: In this paper, we summarize the shock physics and the treatment of radiative transfer in two well-established shock codes—the MAPPINGS code and the Cox/Raymond code. We compare the ionization states, temperatures, electron densities, and energy transportations of the shock models with shock velocities of 50, 110, 150, and 300 km s −1 . In summary, both codes adopt the Rankine–Hugoniot flow equation to describe the shock flows, giving the same shock physical properties in the immediate area behind the shock fronts. The different treatments of radiative transfer in these two codes lead to somewhat different computations of the ionization and thermal structures of shocks, as well as the emission-line fluxes. This work highlights the importance of the delicate treatment of photoionization in shock models, providing insight for the future development of shock codes, such as 3D shock codes.

Source: The Astrophysical Journal

DOI: 10.3847/1538-4357/adeca2

Authors: Yifei 刈非 Jin 金, John Raymond

Institution: Center for Astrophysics Harvard & Smithsonian

Language: English

Topic: Astrophysics and Star Formation Studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $4,499

Funder: Westlake University