English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

The planetary exospheres are poorly known in their outer parts, since theneutral densities are low compared with the instruments detection capabilities.The exospheric models are thus often the main source of information at suchhigh altitudes. We present a new way to take into account analytically theadditional effect of the stellar radiation pressure on planetary exospheres. Ina series of papers, we present with an Hamiltonian approach the effect of theradiation pressure on dynamical trajectories, density profiles and escapingthermal flux. Our work is a generalization of the study by Bishop andChamberlain (1989). In this third paper, we investigate the effect of thestellar radiation pressure on the Circular Restricted Three Body Problem(CR3BP), called also the photogravitational CR3BP, and its implication on theescape and the stability of planetary exospheres, especially for Hot Jupiters.In particular, we describe the transformation of the equipotentials and thelocation of the Lagrange points, and we provide a modified equation for theHill sphere radius that includes the influence of the radiation pressure.Finally, an application to the hot Jupiter HD 209458b reveals the existence ofa blow-off escape regime induced by the stellar radiation pressure.

icarus

Theory for planetary exospheres: III. Radiation pressure effect on the  Circular Restricted Three Body Problem and its implication on planetary  atmospheres