143 citations · 695 across the 23 of their papers we have counts for
23 papers
The chemical abundance pattern of the extremely metal-poor thin disk star 2MASS J1808-5104 and its origins
Mohammad K. Mardini, Anna Frebel, Rana Ezzeddine +6
We present a high-resolution (), high signal-to-noise () Magellan/MIKE spectrum of the bright extremely metal-poor star 2MASS~J18085104. We find [Fe/H] = $…
The Atari Disk, a Metal-Poor Stellar Population in the Disk System of the Milky Way
Mohammad K. Mardini, Anna Frebel, Anirudh Chiti +3
We have developed a chemo-dynamical approach to assign 36,010 metal-poor SkyMapper stars to various Galactic stellar populations. Using two independent techniques (velocity and act…
Properties of loss cone stars in a cosmological galaxy merger remnant
Branislav Avramov, Peter Berczik, Yohai Meiron +2
Aims: We investigate the orbital and phase space properties of loss cone stars that interact strongly with a hard, high-redshift binary supermassive black hole (SMBH) system formed…
Cosmological Insights into the Early Accretion of \textit{r}-Process-Enhanced stars. I. A Comprehensive Chemo-dynamical Analysis of LAMOST J1109+0754
Mohammad K. Mardini, Vinicius M. Placco, Yohai Meiron +10
This study presents a comprehensive chemo-dynamical analysis of LAMOST J1109+0754, a bright (V = 12.8), extremely metal-poor (\abund{Fe}{H} = ) star, with a strong \textit{r…
Mass loss from massive globular clusters in tidal fields
Yohai Meiron, Jeremy J. Webb, Jongsuk Hong +3
Massive globular clusters lose stars via internal and external processes. Internal processes include mainly two-body relaxation, while external processes include interactions with…
Intermediate mass black holes' effect on compact object binaries
Barnabás Deme, Yohai Meiron, Bence Kocsis
Although their existence is not yet confirmed observationally, intermediate mass black holes (IMBHs) may play a key role in the dynamics of galactic nuclei. In this paper, we negle…
Anisotropic Mass Segregation in Rotating Globular Clusters
Ákos Szölgyén, Yohai Meiron, Bence Kocsis
We investigate the internal dynamics of anisotropic, rotating globular clusters with a multimass stellar population by performing new direct N-body simulations. In addition to the…
Resonant relaxation in globular clusters
Yohai Meiron, Bence Kocsis
Resonant relaxation has been discussed as an efficient process that changes the angular momenta of stars orbiting around a central supermassive black hole due to the fluctuating gr…
Star-disc interaction in galactic nuclei: formation of a central stellar disc
Taras Panamarev, Bekdaulet Shukirgaliyev, Yohai Meiron +5
We perform high resolution direct -body simulations to study the effect of an accretion disc on stellar dynamics in an active galactic nucleus (AGN). We show that the interactio…
Diffusion and mixing in globular clusters
Yohai Meiron, Bence Kocsis
Collisional relaxation describes the stochastic process with which a self-gravitating system near equilibrium evolves in phase space due to the fluctuating gravitational field of t…
Spiral arms, warping, and clumps formation in the Galactic center young stellar disk
Hagai B. Perets, Alessandra Mastrobuono-Battisti, Yohai Meiron +1
The Galactic center of the Milky-Way harbors a massive black hole (BH) orbited by a diverse population of young and old stars. A significant fraction of the youngest stars ($\sim4-…
Detecting triple systems with gravitational wave observations
Yohai Meiron, Bence Kocsis, Abraham Loeb
The Laser Interferometer Gravitational Wave Observatory (LIGO) has recently discovered gravitational waves (GWs) emitted by merging black hole binaries. We examine whether future G…
Star-disc interaction in galactic nuclei: orbits and rates of accreted stars
Gareth F. Kennedy, Yohai Meiron, Bekdaulet Shukirgaliyev +4
We examine the effect of an accretion disc on the orbits of stars in the central star cluster surrounding a central massive black hole by performing a suite of 39 high-accuracy dir…
The influence of mergers and ram-pressure stripping on black hole-bulge correlations
Yonadav Barry Ginat, Yohai Meiron, Noam Soker
We analyse the scatter in the correlation between super-massive black hole (SMBH) mass and bulge stellar mass of the host galaxy, and infer that it cannot be accounted for by merge…
Dynamical formation signatures of black hole binaries in the first detected mergers by LIGO
Ryan M. O'Leary, Yohai Meiron, Bence Kocsis
The dynamical formation of stellar-mass black hole-black hole binaries has long been a promising source of gravitational waves for the Laser Interferometer Gravitational-Wave Obser…
Block Time Step Storage Scheme for Astrophysical N-body Simulations
Maxwell Xu Cai, Yohai Meiron, M. B. N. Kouwenhoven +2
Astrophysical research in recent decades has made significant progress thanks to the availability of various -body simulation techniques. With the rapid development of high-perf…
Expansion Techniques for Collisionless Stellar Dynamical Simulations
Yohai Meiron, Baile Li, Kelly Holley-Bockelmann +1
We present GPU implementations of two fast force calculation methods, based on series expansions of the Poisson equation. One is the Self-Consistent Field (SCF) method, which is a…
The kinematic signature of the inspiral phase of massive binary black holes
Yohai Meiron, Ari Laor
Supermassive black holes are expected to pair as a result of galaxy mergers, and form a bound binary at parsec or sub-parsec scales. These scales are unresolved even in nearby gala…
The limited role of mergers in the black hole to bulge mass relation
Carmit Gordon Lahav, Yohai Meiron, Noam Soker
We examine the intrinsic scatter in the correlation between black hole masses and their host bulge masses, and find that it cannot be accounted for by mergers alone. A simple merge…
A conservation-based method for simulating the inspiral of binary black holes
Yohai Meiron, Ari Laor
We present a new approach to studying the evolution of massive black hole binaries in a stellar environment. By imposing conservation of total energy and angular momentum in scatte…
The Stellar Kinematic Signature of Massive Black Hole Binaries
Yohai Meiron, Ari Laor
The stalling radius of a merging massive binary black hole (BBH) is expected to be below 0".1 even in nearby galaxies (Yu 2002), and thus BBHs are not expected to be spatially reso…
Correlation of Black Hole and Bulge Masses: Driven by Energy but Correlated with Momentum
Noam Soker, Yohai Meiron
We use a recent sample of 49 galaxies to show that there is a proportionality relation between the black hole mass M_BH and the quantity μ=M_G*σ/c, where M_G is mass of the spheroi…
X-Ray Emission from Jet-Wind Interaction in Planetary Nebulae
Muhammad Akashi, Yohai Meiron, Noam Soker
We conduct 2D numerical simulations of jets expanding into the slow wind of asymptotic giant branch stars. We show that the post-shock jets' material can explain the observed exten…