stellar energetic particles Archives

The figure shows the HPLC Chromatograms of Amino Acids produced in the Sample B5 irradiation run. -- astro-ph.EP

Astrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Origin & Evolution of Life, Status Report

Proton Irradiation of Primitive Atmospheres of Young Exoplanets And Early Earth: N2O Greenhouse Warming And Prebiotic Synthesis

by Keith CowingMarch 22, 2026March 22, 2026

The emergence of habitable conditions on the early Earth and on rocky exoplanets requires persistent energy sources that can drive both prebiotic chemistry and climate warming under magnetically active young […]

Differential intensities of Galactic cosmic rays as a function of cosmic ray kinetic energy at different heights in an exoplanet atmosphere for a GJ436 b-like exoplanet at a = 0.2 au in the GJ436 system (from Rodgers-Lee et al. 2023). -- astro-ph.SR

Astrochemistry, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Space Weather & Heliophysics, Status Report

Stellar Energetic Particle And Cosmic Ray Effects In Exoplanetary Atmospheres

by Keith CowingSeptember 12, 2024September 12, 2024

Energetic particles, in the form of stellar energetic particles and cosmic rays, can lead to disequilibrium chemical effects in exoplanetary atmospheres. In Earth-like atmospheres, energetic particles can drive the formation […]