Abstract Triple stars and compact objects are ubiquitously observed in nature. Their long-term evolution is complex; particular, the von Zeipel–Lidov–Kozai (ZLK) mechanism can potentially lead to highly eccentric encounters of inner binary. Such a plethora interacting binary phenomena, as well stellar compact-object mergers. Here we find implicit analytical formulae for maximal eccentricity, <?...

Milli-second pulsars with highly stable periods can be considered as very precise clocks and used for pulsar timing array (PTA) which attempts to detect nanoheltz gravitational waves (GWs) directly. Main sources of GWs are supermassive black hole (SMBH) binaries have sub-pc-scale orbits. On the other hand, a SMBH binary is in an earlier phase has pc-scale orbit emits ultra-low-frequency ($\less...

This fourth release of the RIT public catalog numerical relativity black-hole-binary waveforms consists 1881 accurate simulations that include 446 precessing and 611 nonprecessing quasicircular/inspiraling binary systems with mass ratios $q={m}_{1}/{m}_{2}$ in range $1/128\ensuremath{\le}q\ensuremath{\le}1$ individual spins up to $s/{m}^{2}=0.95$; 824 eccentric orbits $0&lt;e\ensuremath{\le}1$....

The appearance of a bar in a galaxy considerably changes the mass distribution within the galactic disc. We have therefore performed a detailed study of the mass relocation within a stellar Kuzmin disc using two-dimensional numerical simulations with fixed 3D-potentials representing the bulge and the halo. We have started from a fully axisymmetric stellar distribution and followed the galaxy th...