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 Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We present new almost time-reversible integrators for solution of planetarysystems consisting of "planets" and a dominant mass ("star"). The algorithmscan be considered adaptive generalizations of the Wisdom--Holman method, inwhich all pairs of planets can be assigned timesteps. These timesteps, alongwith the global timestep, can be adapted time-reversibly, often at noappreciable additional compute cost, without sacrificing any of the long-termerror benefits of the Wisdom--Holman method. The method can also be considereda simpler and more flexible version of the \texttt{SYMBA} symplectic code. Weperform tests on several challenging problems with close encounters and findthe reversible algorithms are up to $2.6$ times faster than a code based on\texttt{SYMBA}. The codes presented here are available on Github. We also findadapting a global timestep reversibly and discretely must be done inblock-synchronized manner or similar.

Multiple timestep reversible $N$-body integrators for close encounters in planetary systems