Reducing biases on H0 measurements using strong lensing and galaxy dynamics: results from the eagle simulation [PDF]
, 2017 Cosmological parameter constraints from observations of time-delay lenses are becoming increasingly precise. However, there may be significant bias and scatter in these measurements due to, among other things, the so-called mass-sheet degeneracy.
A. Tagore +6 more
semanticscholar +1 more source
Made-to-measure modelling of observed galaxy dynamics [PDF]
, 2017 Amongst dynamical modelling techniques, the made-to-measure (M2M) method for modelling steady-state systems is amongst the most flexible, allowing non-parametric distribution functions in complex gravitational potentials to be modelled efficiently using ...
J. Bovy, D. Kawata, J. Hunt
semanticscholar +1 more source
Simulations of the dynamics of magnetized jets and cosmic rays in galaxy clusters [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Feedback processes by active galactic nuclei in the centres of galaxy clusters appear to prevent large-scale cooling flows and impede star formation. However, the detailed heating mechanism remains uncertain.
K. Ehlert +7 more
semanticscholar +1 more source
Dynamics of Powerful Radio Galaxies
Galaxies, 2023 Analytical models describing the dynamics of lobed radio sources are essential for interpretation of the tens of millions of radio sources that will be observed by the Square Kilometre Array and pathfinder instruments. We propose that historical models can be grouped into two classes in which the forward expansion of the radio source is driven by ...
Ross Turner, Stanislav Shabala
openaire +3 more sources
THE ASYMMETRIC DRIFT AND THE ROTATION CURVE OF THE GALAXY
Odessa Astronomical Publications, 2014 Asymmetric drift in the solar neighbourhood is studied by the means of the RAVE data. The asymmetric drift correction is applied to the SDSS data to measure the rotation curve of the Milky Way in the extended solar neighbourhood.
O. Golubov
doaj +1 more source
Intuitive, reproducible high-throughput molecular dynamics in Galaxy: a tutorial
bioRxiv, 2020 This paper is a tutorial developed for the data analysis platform Galaxy. The purpose of Galaxy is to make high-throughput computational data analysis, such as molecular dynamics, a structured, reproducible and transparent process.
Simon A. Bray +3 more
semanticscholar +1 more source
A rumble in the dark: signatures of self-interacting dark matter in supermassive black hole dynamics and galaxy density profiles [PDF]
, 2017 We explore for the first time the effect of self-interacting dark matter (SIDM) on the dark matter (DM) and baryonic distribution in massive galaxies formed in hydrodynamical cosmological simulations, including explicit baryonic physics treatment.
A. Cintio +7 more
semanticscholar +1 more source
The cosmology dependence of galaxy clustering and lensing from a hybrid N-body–perturbation theory model [PDF]
, 2021 We implement a model for the two-point statistics of biased tracers that combines dark matter dynamics from $N$-body simulations with an analytic Lagrangian bias expansion.
N. Kokron +4 more
semanticscholar +1 more source
A Comparison of Supermassive Black Hole Mass of NGC 4151 Using Different Methods
Passer Journal, 2020 We found a new value of supermassive black hole (SMBH) mass in the middle of type 1 Seyfert, NGC 4151 galaxy. In this Study, the image of NGC 4151 galaxy was deprojected to face-on, using spiral galaxy of face-on, and applied IRAF to calculate the ...
Ismaeel A. Al-Baidhany +8 more
doaj +1 more source
Near-infrared spectroscopy of gamma-ray burst host galaxies at z≳: insights into host galaxy dynamics and interpretations of afterglow absorption spectra [PDF]
, 2011 This paper presents near-infrared echellette spectra of faint galaxies in the fields around GRB 050820A at redshift z= 2.613 and GRB 060418 at z= 1.490.
Hsiao-Wen Chen
semanticscholar +1 more source