2021/11/30 by I. Kowalska, Izabela Kowalska-Leszczynska, M. A. Kubiak +3
Chemistry · Engineering · Physics and Astronomy · #Absorption (acoustics) #Alpha particle #Astrophysics #Astrophysics and Star Formation Studies #Atomic physics #Chemistry #Computational physics #Flux (metallurgy) #Heliosphere #Interstellar medium #Materials science #Nuclear physics #Optics #Physics #Plasma #Radiation #Solar and Space Plasma Dynamics #Solar wind #Stellar, planetary, and galactic studies #astro-ph.SR #physics.space-ph #solar cell performance optimization
paper · pdf · doi:10.3847/1538-4357/ac4092
published in arXiv (Cornell University) 926(1), 27 (Cornell University) · Submited to ApJ
arxiv created 2021/11/30 · openalex publication_date 2021/11/30 · openalex created_date 2021/12/06 · arxiv updated 2022/03/07 · openalex updated_date 2026/08/05
Absorption of the Lyman-α radiation on Interstellar Neutral Hydrogen (ISN H) atoms in the heliosphere is a potentially important effect to account for in precise gas distribution simulations. In this paper we develop a method to estimate the magnitude of absorption of solar Lyman-α radiation inside the solar wind termination shock and to include absorption effects in the Warsaw Test Particle Model (WTPM) by an appropriate modification of radiation pressure. We perform calculations of absorption effects on a 3D grid in the heliosphere and present a set of parameters to model absorption effects for the mean solar activity conditions. We show that absorption can change up to 3% depending on the solar activity level. Using a modified version of WTPM, we calculate the expected signal from IBEX-Lo and show that absorption may modify the simulated flux up to 8%.