1999/06/30 by Naoki Itoh, Tsuyoshi Sakamoto, Shugo Kusano +2 · 2 citations
Physics and Astronomy · #Astrophysics #Atomic and Molecular Physics #Bremsstrahlung #Computational physics #Electron #Galaxy cluster #High-Energy Particle Collisions Research #Intracluster medium #Laser-Plasma Interactions and Diagnostics #Nuclear physics #Physics #Plasma #Thermal #Thermodynamics #astro-ph
paper · pdf · doi:10.1086/313375
published as Astrophys.J.Suppl. 128 (2000) 125-138 · 6 pages + 2 subroutines, LaTeX with AASMS macro
openalex publication_date 2000/05/01 · arxiv created 2007/07/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present accurate analytic fitting formulae which summarize the results of the recent calculation by Nozawa, Itoh and Kohyama on the relativistic thermal bremsstrahlung Gaunt factor for the intracluster plasma. The fitting is carried out for Z = 1 to 28, 6.0 < log T < 8.5, -4.0 < log (omega/kT) < 1.0, where Z is the charge number of the ion, T is the temperature, and omega is the angular frequency of the emitted photon. The present analytic fitting formulae will be useful for the analysis of the X-ray emission which comes from the intracluster plasma as well as the other X-ray sources.