Satellite observed thermospheric impact of solar flares and possible implications for the early Earth

Autor(en)
Martin Pfleger, Sandro Krauss, Walter Hausleitner, Helmut Lammer, B. Fichtinger, Herbert I. M. Lichtenegger
Abstrakt

The evolution of planetary atmospheres depends sensitively on the

radiation and particle environment of the planet's hoststar. Atmospheric

escape rates are strongly related especially to the soft X-ray (SXR) and

extreme and far ultraviolett (EUV and FUV) parts of the solar spectrum.

By means of observational data from low Earth orbiting (LEO) satellites

it is possible to study the response of the earths thermosphere on

enhanced EUV radiation events caused by solar flares. This enables one

to estimate exobase temperatures and thermospheric particle densities

under different radiation environments. So the flare events can be used

as proxies for early Earth studies and for Earth-like atmospheres of

potential exoplanets which are exposed to higher stellar EUV fluxes.

Organisation(en)
Institut für Astrophysik
Externe Organisation(en)
Österreichische Akademie der Wissenschaften (ÖAW)
Journal
Abstracts of the EPSC-DPS
Band
8
Seiten
721
Publikationsdatum
09-2013
Peer-reviewed
Ja
ÖFOS 2012
103003 Astronomie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/9884b264-384c-4f4e-96fa-fbf612075e5c