Dr Licia Ray

Lecturer in Space and Planetary Physics

Research Overview

Planets are connected to their surrounding plasma environment by their planetary magnetic fields, which threads the atmosphere and generates the magnetosphere. This interaction generates bright auroral signatures. Each planetary system has different local conditions. Jupiter and Saturn are rotationally dominated gas giants with strong magnetic fields and geologically active moons within their magnetospheres. The Earth rotates more slowly and has a relatively empty magnetosphere. By comparing these systems, we can understand which physical processes dominate under different regimes. I am interested in the auroral acceleration region, auroral current systems, and the effect of the upper atmosphere on the magnetosphere.

Auroral evidence of radial transport at Jupiter during January 2014
Gray, B., Badman, S.V., Bonfond, B..., Kimura, T., Misawa, H., Nichols, J., Vogt, M.F., Ray, L. 31/10/2016 In: Journal of Geophysical Research: Space Physics. 121, 10, p. 9972-9984. 13 p.
Journal article

A planetary wave model for Saturn's 10.7-h periodicities
Smith, C.G.A., Ray, L.C., Achilleos, N.A. 1/04/2016 In: Icarus. 268, p. 76-88. 13 p.
Journal article

Characteristics of north jovian aurora from STIS FUV spectral images
Gustin, J., Grodent, D., Ray, L.C., Bonfond, B., Bunce, E.J., Nichols, J.D., Ozak, N. 04/2016 In: Icarus. 268, p. 215-241. 27 p.
Journal article

Asymmetries observed in Saturn's magnetopause geometry
Pilkington, N.M., Achilleos, N., Arridge, C.S., Guio, P., Masters, A., Ray, L., Sergis, N., Thomsen, M.F., Coates, A.J., Dougherty, M.K. 16/09/2015 In: Geophysical Research Letters. 42, 17, p. 6890-6898. 9 p.
Journal article

Internally driven large-scale changes in the size of Saturn’s magnetosphere
Pilkington, N.M., Achilleos, N., Arridge, C.S., Guio, P., Masters, A., Ray, L., Sergis, N., Thomsen, M.F., Coates, A.J., Dougherty, M.K. 10/09/2015 In: Journal of Geophysical Research: Space Physics. 120, 9, p. 7289-7306. 18 p.
Journal article

The effect of including field-aligned potentials in the coupling between Jupiter's thermosphere, ionosphere, and magnetosphere
Ray, L.C., Achilleos, N.A., Yates, J.N. 19/08/2015 In: Journal of Geophysical Research: Space Physics. 120, 8, p. 6987-7005. 19 p.
Journal article

Solar wind and internally driven dynamics: influences on magnetodiscs and auroral responses
Delamere, P.A., Bagenal, F., Paranicas, C., Masters, A., Radioti, A., Bonfond, B., Ray, L., Jia, X., Nichols, J., Arridge, C. 04/2015
Literature review

Neptune and triton: essential pieces of the solar system puzzle
Masters, A., Achilleos, N., Agnor, C.B., Campagnola, S., Charnoz, S., Christophe, B., Coates, A.J., Fletcher, L.N., Jones, G.H., Lamy, L., Marzari, F., Nettelmann, N., Ruiz, J., Ambrosi, R., Andre, N., Bhardwaj, A., Fortney, J.J., Hansen, C.J., Helled, R., Moragas-Klostermeyer, G., Orton, G., Ray, L., Reynaud, S., Sergis, N., Srama, R., Volwerk, M. 1/12/2014 In: Planetary and Space Science. 104, PA, p. 108-121. 14 p.
Journal article

Local time variations in Jupiter's magnetosphere-ionosphere coupling system
Ray, L.C., Achilleos, N.A., Vogt, M.F., Yates, J.N. 27/06/2014 In: Journal of Geophysical Research: Space Physics. 119, 6, p. 4740-4751. 12 p.
Journal article

Current-voltage relation for the Saturnian system
Ray, L.C., Galand, M., Delamere, P.A., Fleshman, B.L. 19/06/2013 In: Journal of Geophysical Research: Space Physics. 118, 6, p. 3214-3222. 9 p.
Journal article

Characterizing the limitations to the coupling between Saturn's ionosphere and middle magnetosphere
Ray, L.C., Galand, M., Moore, L.E., Fleshman, B. 17/07/2012 In: Journal of Geophysical Research: Space Physics. 117, 7, 14 p.
Journal article

Magnetosphere-ionosphere coupling at Jupiter: a parameter space study
Ray, L.C., Ergun, R.E., Delamere, P.A., Bagenal, F. 7/01/2012 In: Journal of Geophysical Research: Space Physics. 117, 1, 13 p.
Journal article

Auroral signatures of ionosphere-magnetosphere coupling at Jupiter and Saturn
Ray, L.C., Ergun, R.E. 2012 In: Auroral Phenomenology and Magnetospheric Processes. American Geophysical Union p. 205-214. 10 p.
Chapter (peer-reviewed)

Comparative study of the power transferred from satellite-magnetosphere interactions to auroral emissions
Hess, S.L.G., Delamere, P.A., Dols, V., Ray, L.C. 7/01/2011 In: Journal of Geophysical Research: Space Physics. 116, 1, 10 p.
Journal article

Magnetosphere-ionosphere coupling at Jupiter: Effect of field-aligned potentials on angular momentum transport
Ray, L.C., Ergun, R.E., Delamere, P.A., Bagenal, F. 17/09/2010 In: Journal of Geophysical Research: Space Physics. 115, 9, 17 p.
Journal article

Generation of parallel electric fields in the Jupiter-Io torus wake region
Ergun, R.E., Ray, L., Delamere, P.A., Bagenal, F., Dols, V., Su, Y.J. 2/05/2009 In: Journal of Geophysical Research: Space Physics. 114, 5, 11 p.
Journal article

Current-voltage relation of a centrifugally confined plasma
Ray, L.C., Su, Y.J., Ergun, R.E., Delamere, P.A., Bagenal, F. 28/04/2009 In: Journal of Geophysical Research: Space Physics. 114, 4
Journal article

Modelling the Io-related DAM emission by modifying the beaming angle
Ray, L.C., Hess, S. 22/11/2008 In: Journal of Geophysical Research: Space Physics. 113, 11, 10 p.
Journal article

Saturn's neutral torus versus Jupiter's plasma torus
Delamere, P.A., Bagenal, F., Dols, V., Ray, L.C. 16/05/2007 In: Geophysical Research Letters. 34, 9, 5 p.
Journal article

Modelling high-power large-aperture radar meteor trails
Dyrud, L.P., Ray, L., Oppenheim, M., Close, S., Denney, K. 09/2005 In: Journal of Atmospheric and Solar-Terrestrial Physics. 67, 13 , p. 1171-1177. 7 p.
Journal article

Meteor velocity determination with plasma physics
Dyrud, L.P., Denney, K., Close, S., Oppenheim, M., Chau, J., Ray, L. 2004 In: Atmospheric Chemistry and Physics . 4, 3, p. 817-824. 8 p.
Journal article

Plasma instabilities in meteor trails: linear theory
Oppenheim, M.M., Dyrud, L.P., Ray, L. 6/02/2003 In: Journal of Geophysical Research: Space Physics. 108, A2
Journal article