A5047373560- Stellar, planetary, and galactic studies
- Galaxies: Formation, Evolution, Phenomena
- Astronomy and Astrophysical Research
- Pulsars and Gravitational Waves Research
- Scientific Research and Discoveries
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- High-pressure geophysics and materials
- Experimental and Theoretical Physics Studies
- earthquake and tectonic studies
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Advanced Thermodynamics and Statistical Mechanics
University of Arizona
2023
Joint Institute for Laboratory Astrophysics
2020
University of Colorado Boulder
2020
Abstract The Large Magellanic Cloud (LMC) will induce a dynamical friction (DF) wake on infall to the Milky Way (MW). MW’s stellar halo respond gravity of LMC and dark matter (DM) wake, forming counterpart DM wake. This provides novel opportunity constrain properties particle. We present suite high-resolution, windtunnel-style simulations LMC's DF that compare structure, kinematics, tracer response in cold (CDM), with without self-gravity, versus fuzzy (FDM) m = 10 −23 eV. conclude...
Abstract Stellar streams in the Milky Way are promising detectors of low-mass dark matter (DM) subhalos predicted by ΛCDM. Passing induce perturbations that indicate presence subhalos. Understanding how known DM-dominated satellites impact is a crucial step toward using stream to constrain properties perturbers. Here, we cross-match Gaia Early Data Release 3 and SEGUE member catalog Cetus-Palca (CPS) with H3 for additional radial velocity measurements fit orbit CPS this six-dimensional (6D)...
Eccentric nuclear disks (ENDs) are a type of star cluster in which the stars lie on eccentric, apsidally-aligned orbits disk around central supermassive black hole (SMBH). These can produce high rate tidal disruption events (TDEs) via secular gravitational torques. Previous studies ENDs have included with only one mass. Here, we present first study an eccentric two stellar species. We show that radial mass segregation consistent previous results from other types. Additionally, vertical by...
As our nearest large neighbor, the Andromeda Galaxy provides a unique laboratory for investigating galaxy formation and distribution substructure properties of dark matter in Milky Way-like galaxy. Here, we propose an initial 2-epoch ($\Delta t\approx 5$yr), 2-band Roman survey entire halo Andromeda, covering 500 square degrees, which will detect nearly every red giant star (10$\sigma$ detection F146, F062 26.5, 26.1AB mag respectively) yield proper motions to $\sim$25 microarcsec/year...
Stellar streams in the Milky Way are promising detectors of low-mass dark matter (DM) subhalos predicted by $\Lambda$CDM. Passing induce perturbations that indicate presence subhalos. Understanding how known DM-dominated satellites impact is a crucial step towards using stream to constrain properties perturbers. Here, we cross-match $\textit{Gaia}$ EDR3 and SEGUE member catalog Cetus-Palca (CPS) with H3 for additional radial velocity measurements fit orbit CPS this 6-D data. We demonstrate...
The Large Magellanic Cloud (LMC) will induce a dynamical friction (DF) wake on infall to the Milky Way (MW). MW's stellar halo respond gravity of LMC and dark matter (DM) wake, forming counterpart DM wake. This provides novel opportunity constrain properties particle. We present suite high-resolution, windtunnel-style simulations LMC's DF that compare structure, kinematics, tracer response in cold (CDM), with without self-gravity, vs. fuzzy (FDM) $m_a = 10^{-23}$ eV. conclude self-gravity...