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Massive perturbers in the galactic center
Hagai B. Perets, Clovis Hopman, Tal Alexander
We investigate the role of massive perturbers, such as giant molecular clouds or stellar clusters, in supplying low-angular momentum stars that pass very close to the central massi…
Spectroscopic Binary Mass Determination using Relativity
Shay Zucker, Tal Alexander
High-precision radial-velocity techniques, which enabled the detection of extrasolar planets are now sensitive to relativistic effects in the data of spectroscopic binary stars (SB…
Massive perturber-driven interactions of stars with a massive black hole
Hagai B. Perets, Clovis Hopman, Tal Alexander
We study the role of massive perturbers (MPs) in deflecting stars and binaries to almost radial ("loss-cone") orbits, where they pass near the central massive black hole (MBH), int…
Resonant Relaxation near the Massive Black Hole in the Galactic Center
Clovis Hopman, Tal Alexander
The coherent torques between stars on orbits near massive black holes (MBHs) lead to resonant angular momentum relaxation. Due to the fact that orbits are Keplerian to good approxi…
The effect of mass-segregation on gravitational wave sources near massive black holes
Clovis Hopman, Tal Alexander
Gravitational waves (GWs) from the inspiral of compact remnants (CRs) into massive black holes (MBHs) will be observable to cosmological distances. While a CR spirals in, 2-body sc…
The Two Young Star Disks in the Central Parsec of the Galaxy: Properties, Dynamics and Formation
T. Paumard, R. Genzel, F. Martins +11
We report the definite spectroscopic identification of 41 OB supergiants, giants and main sequence stars in the central parsec of the Galaxy. Detection of their absorption lines ha…