Update of the Solar Lyman-Alpha Profile Line Model

Abstract

We present a modification of a model of solar cycle evolution of the solar Lyman-alpha line profile, along with a sensitivity study of interstellar neutral H hydrogen to uncertainties in radiation pressure level. The line profile model, originally developed by Kowalska-Leszczynska et al. 2018a, is parametrized by the composite solar Lyman-alpha flux, which recently was revised Machol et al. 2019. We present modified parameters of the previously-developed model of solar radiation pressure for neutral hydrogen and deuterium atoms in the heliosphere. The mathematical function used in the model, as well as the fitting procedure, remain unchanged. We show selected effects of the model modification on ISN H properties in the heliosphere and we discuss the sensitivity of these quantities to uncertainties in the calibration of the composite Lyman-alpha series.

arXiv comment9 pages, 7 figures, 2 tables Submitted to ApJ

References in corpus (9)

• Warm Breeze from the starboard bow: a new population of neutral helium in the heliosphere
• Local Interstellar Neutral Hydrogen sampled in-situ by IBEX
• Neutral interstellar hydrogen in the inner heliosphere under the influence of wavelength-dependent solar radiation pressure
• Evolution of the Solar Lyman-Alpha line profile during the solar cycle
• Interstellar Neutral Gas Species And Their Pickup Ions Inside The Heliospheric Termination Shock. The Large-scale Structures
• Local Interstellar Hydrogen's Disappearance at 1 Au: Four Years of IBEX in the Rising Solar Cycle
• Evolution of the solar Ly-$\alpha$ line profile during the solar cycle. II. How accurate is the present radiation pressure paradigm for interstellar neutral H in the heliosphere?
• Detectability of neutral interstellar deuterium by a forthcoming SMEX mission IBEX
• Assessment of detectability of neutral interstellar deuterium by IBEX observations

Cited by in corpus (10)

• Sun-Heliosphere Observation-based Ionization Rates Model
• Heliospheric Energetic Neutral Atoms: Non-stationary Modeling and Comparison with IBEX-Hi data
• WawHelioGlow: a model of the heliospheric backscatter glow. I. Model definition
• WawHelioGlow: a model of the heliospheric backscatter glow. II. The helioglow buildup and the potential significance of the anisotropy in the solar EUV output
• Interstellar Neutral Hydrogen in the Heliosphere: New Horizons Observations in the Context of Models
• Backscattered solar Lyman-alpha emission as a tool for the heliospheric boundary exploration
• Influence of Heliolatitudinal Anisotropy of Solar FUV/EUV Emissions on Lyman-alpha Helioglow: SOHO/SWAN Observations and WawHelioGlow Modeling
• The flow direction of interstellar neutral H from SOHO/SWAN
• Absorption of the Lyman-$\alpha$ radiation in the heliosphere
• Understanding the IBEX ribbon using the kinetic model of pickup proton transport in a scatter-free limit