Dr Sarah Badman

Lecturer

Research Overview

Magnetospheric and auroral dynamics in the solar system. Diagnosing the transfer of energy from the Sun to planetary environments. Use of Cassini spacecraft in situ and remote sensing data at Saturn. Interpretation and comparison of auroral emissions at ultraviolet, infrared and radio wavelengths from the outer planets.

Field dipolarization in Saturn's magnetotail with planetward ion flows and energetic particle flow bursts: evidence of quasi-steady reconnection
Jackman, C.M., Thomsen, M.F., Mitchell, D.G., Sergis, N., Arridge, C.S., Felici, M., Badman, S.V., Paranicas, C., Jia, X., Hospodarksy, G.B., Andriopoulou, M., Khurana, K.K., Smith, A.W., Dougherty, M.K. 05/2015 In: Journal of Geophysical Research: Space Physics. 120, 5, p. 3603-3617. 15 p.
Journal article

Auroral processes at the giant planets: energy deposition, emission mechanisms, morphology and spectra
Badman, S.V., Branduardi-Raymont, G., Galand, M., Hess, S.L.G., Krupp, N., Lamy, L., Melin, H., Tao, C. 04/2015
Scientific review

Giant planet magnetodiscs and aurorae: an introduction
Szego, K., Achilleos, N., Arridge, C., Badman, S.V., Delamere, P., Grodent, D., Kivelson, M.G., Louarn, P. 04/2015 In: Space Science Reviews. 187, 1-4, 3 p.
Editorial

Transient internally driven aurora at Jupiter discovered by Hisaki and the Hubble Space Telescope
Kimura, T., Badman, S.V., Tao, C., Yoshioka, K., Murakami, G., Yamazaki, A., Tsuchiya, F., Bonfond, B., Steffl, A.J., Masters, A., Kasahara, S., Hasegawa, H., Yoshikawa, I., Fujimoto, M., Clarke, J.T. 25/03/2015 In: Geophysical Research Letters. 42, 6, p. 1662-1668. 7 p.
Journal article

The science case for an orbital mission to Uranus: exploring the origins and evolution of ice giant planets
Arridge, C.S., Achilleos, N., Agarwal, J., Agnor, C.B., Ambrosi, R., Andre, N., Badman, S.V., Baines, K., Banfield, D., Barthelemy, M., Bisi, M.M., Blum, J., Bocanegra-Bahamon, T., Bonfond, B..., Bracken, C., Brandt, P., Briand, C., Briois, C., Brooks, S., Castillo-Rogez, J., Cavalie, T., Christophe, B., Coates, A.J., Collinson, G., Cooper, J.F., Costa-Sitja, M., Courtin, R., Daglis, I.A., De Pater, I., Desai, M., Dirkx, D., Dougherty, M.K., Ebert, R.W., Filacchione, G., Fletcher, L.N., Fortney, J., Gerth, I., Grassi, D., Grodent, D., Grun, E., Gustin, J., Hedman, M., Helled, R., Henri, P., Hess, S., Hillier, J.K., Hofstadter, M.H., Holme, R., Horanyi, M., Hospodarsky, G., Hsu, S., Irwin, P., Jackman, C.M., Karatekin, O., Kempf, S., Khalisi, E., Konstantinidis, K., Kruger, H., Kurth, W.S., Labrianidis, C., Lainey, V., Lamy, L.L., Laneuville, M., Lucchesi, D., Luntzer, A., MacArthur, J., Maier, A., Masters, A., McKenna-Lawlor, S., Melin, H., Milillo, A., Moragas-Klostermeyer, G., Morsch 12/2014 In: Planetary and Space Science. 104, Part A, p. 122-140. 19 p.
Journal article

Vertical emissivity profiles of Jupiter's northern H-3(+) and H-2 infrared auroras observed by Subaru/IRCS
Uno, T., Kasaba, Y., Tao, C., Sakanoi, T., Kagitani, M., Fujisawa, S., Kita, H., Badman, S.V. 12/2014 In: Journal of Geophysical Research: Space Physics. 119, 12, p. 10219-10241. 23 p.
Journal article

Dynamic auroral storms on Saturn as observed by the Hubble Space Telescope
Nichols, J.D., Badman, S.V., Baines, K.H., Brown, R.H., Bunce, E.J., Clarke, J.T., Cowley, S.W.H., Crary, F.J., Dougherty, M.K., Gerard, J., Grocott, A., Grodent, D., Kurth, W., Melin, H., Mitchell, D., Pryor, W.R., Stallard, T.S. 28/05/2014 In: Geophysical Research Letters. 41, 10, 8 p.
Letter

Cassini nightside observations of the oscillatory motion of Saturn's northern auroral oval
Bunce, E.J., Grodent, D.C., Jinks, S.L., Andrews, D.J., Badman, S.V., Coates, A.J., Cowley, S.W.H., Dougherty, M.K., Kurth, W.S., Mitchell, D.G., Provan, G. 05/2014 In: Journal of Geophysical Research: Space Physics. 119, 5, p. 3528-3543. 16 p.
Journal article

Open flux in Saturn’s magnetosphere
Badman, S.V., Jackman, C.M., Nichols, J.D., Clarke, J.T., Gérard, J. 1/03/2014 In: Icarus. 231, p. 137-145. 9 p.
Journal article

Saturn's dayside ultraviolet auroras: Evidence for morphological dependence on the direction of the upstream interplanetary magnetic field
Meredith, C.J., Alexeev, I.I., Badman, S.V., Belenkaya, E.S., Cowley, S.W.H., Dougherty, M.K., Kalegaev, V.V., Lewis, G.R., Nichols, J.D. 03/2014 In: Journal of Geophysical Research: Space Physics. 119, 3, p. 1994-2008. 15 p.
Journal article

On the anti-correlation between H3+ temperature and density in giant planet ionospheres
Melin, H., Stallard, T., O'Donoghue, J., Badman, S.V., Miller, S., Blake, J. 21/02/2014 In: Monthly Notices of the Royal Astronomical Society. 438, 2, p. 1611-1617. 7 p.
Journal article

Conjugate observations of Saturn’s northern and southern H3+ aurorae
O'Donoghue, J., Stallard, T.S., Melin, H., Cowley, S.W.H., Badman, S.V., Moore, L., Miller, S., Tao, C., Baines, K.H., Blake, J. 02/2014 In: Icarus. 229, p. 214-220. 7 p.
Journal article

The plasma depletion layer in Saturn’s magnetosheath
Masters, A., Phan, T., Badman, S.V., Hasegawa, H., Fujimoto, M., Russell, C.T., Coates, A.J., Dougherty, M.K. 01/2014 In: Journal of Geophysical Research: Space Physics. 119, 1, p. 121-130. 10 p.
Journal article

Long-term modulations of Saturn's auroral radio emissions by the solar wind and seasonal variations controlled by the solar ultraviolet flux
Kimura, T., Lamy, L., Tao, C., Badman, S.V., Kasahara, S., Cecconi, B., Zarka, P., Morioka, A., Miyoshi, Y., Maruno, D., Kasaba, Y., Fujimoto, M. 11/2013 In: Journal of Geophysical Research: Space Physics. 118, 11, p. 7019-7035. 17 p.
Journal article

Multispectral simultaneous diagnosis of Saturn's aurorae throughout a planetary rotation
Lamy, L., Prangé, R., Pryor, W., Gustin, J., Badman, S.V., Melin, H., Stallard, T., Mitchell, D., Brandt, P.C. 08/2013 In: Journal of Geophysical Research. 118, 8, p. 4817-4843. 27 p.
Journal article

Auroral counterpart of magnetic field dipolarizations in Saturn's tail
Jackman, C.M., Achilleos, N., Cowley, S.W., Bunce, E.J., Radioti, A., Grodent, D., Badman, S.V., Dougherty, M.K., Pryor, W. 07/2013 In: Planetary and Space Science. 82-83, p. 34-42. 9 p.
Journal article

Extreme densities in Titan's ionosphere during the T85 magnetosheath encounter
T. Edberg, N.J., Andrews, D.J., Shebanits, O., Ågren, K., Wahlund, J., Opgenoorth, H.J., Roussos, E., Garnier, P., Cravens, T.E., Badman, S.V., Modolo, R., Bertucci, C., Dougherty, M.K. 28/06/2013 In: Geophysical Research Letters. 40, 12, p. 2879-2883. 5 p.
Journal article

Bursty magnetic reconnection at Saturn's magnetopause
Badman, S.V., Masters, A., Hasegawa, H., Fujimoto, M., Radioti, A., Grodent, D., Sergis, N., Dougherty, M., Coates, A.J. 03/2013 In: Geophysical Research Letters. 40, 6, p. 1027-1031. 5 p.
Journal article

Asymmetric distribution of reconnection jet fronts in the Jovian nightside magnetosphere
Kasahara, S., Kronberg, E.A., Kimura, T., Tao, C., Badman, S.V., Masters, A., Retinò, A., Krupp, N., Fujimoto, M. 1/01/2013 In: Journal of Geophysical Research. 118, 1, p. 375-384. 10 p.
Journal article

Temperature changes and energy inputs in giant planet atmospheres: what we are learning from H3+
Stallard, T.S., Melin, H., Miller, S., O' Donoghue, J., Cowley, S.W.H., Badman, S.V., Adriani, A., Brown, R.H., Baines, K.H. 13/11/2012 In: Philosophical Transactions A: Mathematical, Physical and Engineering Sciences . 370, 1978, p. 5213-5224. 12 p.
Journal article

Rotational modulation and local time dependence of Saturn's infrared H3+ auroral intensity
Badman, S.V., Andrews, D.J., Cowley, S.W.H., Lamy, L., Provan, G., Tao, C., Kasahara, S., Kimura, T., Fujimoto, M., Melin, H., Stallard, T., Brown, R.H., Baines, K.H. 27/09/2012 In: Journal of Geophysical Research. 117, A9, 12 p.
Journal article

On the feasibility of characterizing jovian auroral electrons via infrared line-emission analysis
Tao, C., Badman, S.V., Uno, T., Fujimoto, M. 09/2012 In: Icarus. 221, 1, p. 236-247. 12 p.
Journal article

Peak emission altitude of Saturn's H3+ aurora
Stallard, T.S., Melin, H., Miller, S., Badman, S.V., Brown, R.H., Baines, K.H. 7/08/2012 In: Geophysical Research Letters. 39, 15, 5 p.
Journal article

Cassini observations of ion and electron beams at Saturn and their relationship to infrared auroral arcs
Badman, S.V., Achilleos, N., Arridge, C.S., Baines, K.H., Brown, R.H., Bunce, E.J., Coates, A.J., Cowley, S.W.H., Dougherty, M.K., Fujimoto, M., Hospodarsky, G., Kasahara, S., Kimura, T., Melin, H., Mitchell, D.G., Stallard, T., Tao, C. 01/2012 In: Journal of Geophysical Research. 117, A1, 12 p.
Journal article

Cassini VIMS observations of latitudinal and hemispheric variations in Saturn’s infrared auroral intensity
Badman, S.V., Tao, C., Grocott, A., Kasahara, S., Melin, H., Brown, R.H., Baines, K.H., Fujimoto, M., Stallard, T. 1/12/2011 In: Icarus. 216, 2, p. 367-375. 9 p.
Journal article

Magnetic reconnection in the Jovian tail: X-line evolution and consequent plasma sheet structures
Kasahara, S., Kronberg, E.A., Krupp, N., Kimura, T., Tao, C., Badman, S.V., Retinò, A., Fujimoto, M. 11/2011 In: Journal of Geophysical Research. 116, A11, 15 p.
Journal article

Simultaneous Cassini VIMS and UVIS observations of Saturn's southern aurora: comparing emissions from H, H2 and H3+ at a high spatial resolution
Melin, H., Stallard, T., Miller, S., Gustin, J., Galand, M., Badman, S.V., Pryor, W.R., O'donoghue, J., Brown, R.H., Baines, K.H. 1/08/2011 In: Geophysical Research Letters. 38, 15, 5 p.
Journal article

UV and IR auroral emission model for the outer planets: Jupiter and Saturn comparison
Tao, C., Badman, S.V., Fujimoto, M. 1/06/2011 In: Icarus. 213, 2, p. 581-592.
Journal article

Dynamic magnetic island coalescence and associated electron acceleration
Tanaka, K.G., Fujimoto, M., Badman, S.V., Shinohara, I. 18/02/2011 In: Physics of Plasmas. 18, 2, 11 p.
Journal article

Location of Saturn's northern infrared aurora determined from Cassini VIMS images
Badman, S.V., Achilleos, N., Baines, K.H., Brown, R.H., Bunce, E.J., Dougherty, M.K., Melin, H., Nichols, J.D., Stallard, T. 02/2011 In: Geophysical Research Letters. 38, 3, 6 p.
Journal article

Supercorotating return flow from reconnection in Saturn's magnetotail
Masters, A., Thomsen, M.F., Badman, S.V., Arridge, C.S., Young, D.T., Coates, A.J., Dougherty, M.K. 02/2011 In: Geophysical Research Letters. 38, 3, 5 p.
Journal article

Merging of magnetic islands as an efficient accelerator of electrons
Tanaka, K.G., Yumura, T., Fujimoto, M., Shinohara, I., Badman, S.V., Grocott, A. 7/10/2010 In: Physics of Plasmas. 17, 10, 11 p.
Journal article

Saturn's equinoctial auroras
Nichols, J.D., Badman, S.V., Bunce, E.J., Clarke, J.T., Cowley, S.W.H., Crary, F.J., Dougherty, M.K., Gérard, J., Grodent, D., Hansen, K.C., Kurth, W.S., Mitchell, D.G., Pryor, W.R., Stallard, T.S., Talboys, D.L., Wannawichian, S. 12/2009 In: Geophysical Research Letters. 36, 24, 5 p.
Journal article

Magnetosonic Mach number dependence of the efficiency of reconnection between planetary and interplanetary magnetic fields
Grocott, A., Badman, S.V., Cowley, S., Milan, S., Nichols, J., Yeoman, T. 18/07/2009 In: Journal of Geophysical Research. 114, A7, 9 p.
Journal article

Cluster spacecraft observations of a ULF wave enhanced by Space Plasma Exploration by Active Radar (SPEAR)
Badman, S.V., Wright, D.M., Clausen, L.B.N., Fear, R.C., Robinson, T.R., Yeoman, T.K. 2009 In: Annales Geophysicae. 27, 9, p. 3591-3599. 9 p.
Journal article

Relationship between solar wind corotating interaction regions and the phasing and intensity of Saturn kilometric radiation bursts
Badman, S.V., Cowley, S.W.H., Lamy, L., Cecconi, B., Zarka, P. 19/11/2008 In: Annales Geophysicae. 26, 12, p. 3641-3651. 11 p.
Journal article

Complex structure within Saturn’s infrared aurora
Stallard, T., Miller, S., Lystrup, M., Achilleos, N., Bunce, E., Arridge, C., Dougherty, M., Cowley, S., Badman, S.V., Talboys, D., Brown, R., Baines, K., Buratti, B., Clark, R., Sotin, C., Nicholson, P., Drossart, P. 11/2008 In: Nature. 456, 7219, p. 214-217. 4 p.
Journal article

Comment on "Jupiter: A fundamentally different magnetospheric interaction with the solar wind" by D. J. McComas and F. Bagenal
Cowley, S., Badman, S.V., Imber, S.M., Milan, S. 05/2008 In: Geophysical Research Letters. 35, 10, 3 p.
Journal article

Dependence of the open-closed field line boundary in Saturn's ionosphere on both the IMF and solar wind dynamic pressure: comparison with the UV auroral oval observed by the HST
Belenkaya, E.S., Cowley, S.W.H., Badman, S.V., Blokhina, M.S., Kalegaev, V. 4/02/2008 In: Annales Geophysicae. 26, 1, p. 159-166. 8 p.
Journal article

IMF dependence of the open-closed field line boundary in Saturn's ionosphere, and its relation to the UV auroral oval observed by the Hubble Space Telescope
Belenkaya, E.S., Alexeev, I.I., Blokhina, M.S., Cowley, S.W.H., Badman, S.V., Kalegaev, V.V., Grigoryan, M.S. 4/06/2007 In: Annales Geophysicae. 25, 5, p. 1215-1226. 12 p.
Journal article

Significance of Dungey-cycle flows in Jupiter's and Saturn's magnetospheres, and their identification on closed equatorial field lines
Badman, S.V., Cowley, S.W.H. 8/05/2007 In: Annales Geophysicae. 25, 4, p. 941-951. 11 p.
Journal article

A statistical analysis of the location and width of Saturn's southern auroras
Badman, S.V., Cowley, S.W.H., Gérard, J., Grodent, D. 21/12/2006 In: Annales Geophysicae. 24, 12, p. 3533-3545. 13 p.
Journal article

Open flux estimates in Saturn's magnetosphere during the January 2004 Cassini-HST campaign, and implications for reconnection rates
Badman, S.V., Bunce, E.J., Clarke, J.T., Cowley, S.W.H., Gérard, J., Grodent, D., Milan, S.E. 11/2005 In: Journal of Geophysical Research. 110, A11, 16 p.
Journal article

Signature of Saturn's auroral cusp: simultaneous Hubble Space Telescope FUV observations and upstream solar wind monitoring
Gérard, J., Bunce, E.J., Grodent, D., Cowley, S.W.H., Clarke, J.T., Badman, S.V. 11/2005 In: Journal of Geophysical Research. 110, A11, 12 p.
Journal article

Reconnection in a rotation-dominated magnetosphere and its relation to Saturn's auroral dynamics
Cowley, S.W.H., Badman, S.V., Bunce, E.J., Clarke, J.T., Gérard, J., Grodent, D., Jackman, C.M., Milan, S.E., Yeoman, T.K. 02/2005 In: Journal of Geophysical Research. 110, A2, 19 p.
Journal article

The influence of IMF By on the nature of the nightside high-latitude ionospheric flow during intervals of positive IMF Bz
Grocott, A., Badman, S.V., Cowley, S.W.H., Yeoman, T.K., Cripps, P.J. 8/04/2004 In: Annales Geophysicae. 22, 5, p. 1755-1764. 10 p.
Journal article