Ultraviolet flare Archives

Although flare rates and energies are measured in the optical for most stars, the FUV and NUV energies determine the photochemical radiation environment of orbiting planets during these events. Simultaneous observations at UV and optical wavelengths are needed to derive the energy budget as flares with similar emission levels at optical wavelengths can produce NUV fluxes that differ by 2–20× depending on the Teff of the flare, correlating with order-of-magnitude discrepancies at FUV wavelengths. Spectra of ϵ Eri during the two flares are obtained by superimposing the flare blackbody onto the semi-empirical base spectrum from Behr et al. (2023). -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Missions & Hardware, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography

Preparing For The Early eVolution Explorer

by Keith CowingNovember 18, 2024November 18, 2024

Ultraviolet flare emission can drive photochemistry in exoplanet atmospheres and even serve as the primary source of uncertainty in atmospheric retrievals. Additionally, flare energy budgets are not well-understood due to […]

Ultraviolet flare

Preparing For The Early eVolution Explorer

Atmospheric Evolution Through Outgassing And Escape On Young Molten Rocky Exoplanets

The Exozodi Spectral Effect: Residual Habitable Zone Dust May Bias ExoEarth Characterization

The Majority Of Hot Jupiters Formed Beyond The Water Ice Line

Sulfur Photochemistry Observationally Traces Mantle Redox States Of Rocky Planets

Tracing The Source Of Carbon Oxides On The Large Moons Of Uranus