Galactic dynamics and computational methods

Lead Research Organisation: University of Cambridge
Department Name: Institute of Astronomy

Abstract

Initial project: find examples of biorthogonal basis sets (extending the work of Clutton-Brock 1972/1973), that are useful for efficiently representing the gravitational fields and density profiles of galaxies.

Subsequent projects: work in the general area of galactic dynamics.

Publications

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Lilley E (2018) Galaxy halo expansions: a new biorthogonal family of potential-density pairs in Monthly Notices of the Royal Astronomical Society

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Lilley E (2018) The super-NFW model: an analytic dynamical model for cold dark matter haloes and elliptical galaxies in Monthly Notices of the Royal Astronomical Society

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Lilley E (2018) A two-parameter family of double-power-law biorthonormal potential-density expansions in Monthly Notices of the Royal Astronomical Society

Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N503988/1 01/10/2015 30/09/2020
1788901 Studentship ST/N503988/1 01/10/2016 31/03/2020 Edward Lilley
 
Description Mathematical methods for modelling gravitational lenses 
Organisation University of St Andrews
Department School of Physics and Astronomy
Country United Kingdom 
Sector Academic/University 
PI Contribution Theoretical work on modelling gravitational lenses using 2D orthogonal basis sets (an extension of the work on 3D basis sets that resulted in 3 publications in 2018)
Collaborator Contribution Dr Hongsheng Zhao (a current visitor to the Institute of Astronomy in Cambridge) initiated this line of research
Impact Expected publication output in 2019 (1-2 papers).
Start Year 2018
 
Description Modelling dark matter haloes in Milky Way-like galaxies 
Organisation University of Sussex
Department School of Mathematical and Physical Sciences Sussex
Country United Kingdom 
Sector Academic/University 
PI Contribution Developed novel mathematical techniques to represent the structure of dark matter haloes
Collaborator Contribution Dr Denis Erkal contributed simulations (~millions of particles) of the dark matter haloes of Milky Way-like galaxies
Impact Expected 1-2 future publications on the structure of dark matter haloes and the distortion of the Milky Way's halo by the passage of the Large Magellanic Cloud
Start Year 2018