538 citations · 8.5k across the 174 of their papers we have counts for
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Secular dynamics of hierarchical quadruple systems: the case of a triple system orbited by a fourth body
Adrian S. Hamers, Hagai B. Perets, Fabio Antonini +1
We study the secular gravitational dynamics of quadruple systems consisting of a hierarchical triple system orbited by a fourth body. These systems can be decomposed into three bin…
Formation and evolution of nuclear star clusters with in-situ star-formation: Nuclear cores and age segregation
Danor Aharon, Hagai B. Perets
Nuclear stellar cluster (NSCs) are known to exist around massive black holes (MBHs) in galactic nuclei. Two formation scenarios were suggested for their origin: (1) Build-up of NSC…
Origin of the Galactic 511 keV emission from positrons produced in irregular supernovae
Hagai B. Perets
Gamma ray emission of 511 keV lines arising from electron-positron annihilation has been detected from the Galaxy since the 70s. Spatially resolved observations using the INTEGRAL…
Formation of irregular and runaway moons/exomoons through moon-moon scattering
Hagai B. Perets, Matthew J. Payne
Gas giant planets in the Solar system host large satellite systems with multiple regular and irregular moons. Regular moons revolve around their host planet in circular, low inclin…
The Multiple Origin of Blue Straggler Stars: Theory vs. Observations
Hagai B. Perets
In this chapter we review the various suggested channels for the formation and evolution of blue straggler stars (BSSs) in different environments and their observational prediction…
Secular dynamics in hierarchical three-body systems with mass loss and mass transfer
Erez Michaely, Hagai B. Perets
Recent studies have shown that secular evolution of triple systems can play a major role in the evolution and interaction of their inner binaries. Very few studies explored the ste…