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astro-ph.GA2023★ 24 cited
A twisted and precessing Cepheid warp in the outer Milky Way disc
Walter Dehnen, Marcin Semczuk, Ralph Schönrich
We examine the Galactic warp in a sample of all classical Cepheids with Gaia DR3 radial velocity. In each radial bin, we determine (1) the inclined plane normal to the mean orbital…
astro-ph.EP2023★ 9 cited
Switching integrators reversibly in the astrophysical -body problem
David M. Hernandez, Walter Dehnen
We present a simple algorithm to switch between -body time integrators in a reversible way. We apply it to planetary systems undergoing arbitrarily close encounters and highly e…