Publications

Papers

Nichols, J. D., S. V. Badman, E. J. Bunce, J. T. Clarke, S. W. H. Cowley, G. J. Hunt, and G. Provan (2016), Saturn’s northern auroras as observed using the Hubble Space Telescope, Icarus, 263, 17–31, doi:10.1016/j.icarus.2015.09.008.

Melin, H., S. V. Badman, T. S. Stallard, S. W. H. Cowley, U. Dyudina, J. D. Nichols, G. Provan, J. O’Donoghue, W. R. Pryor, K. H. Baines, S. Miller, J. Gustin, A. Radioti, C. Tao, C. J. Mered- ith, J. S. D. Blake, and R. E. Johnson (2016), Simultaneous multi-scale and multi-instrument observations of Saturn’s aurorae during the 2013 observing campaign, Icarus, 263, 56–74, doi: 10.1016/j.icarus.2015.08.021.

Kurth, W. S., G. B. Hospodarsky, D. A. Gurnett, L. Lamy, M. K. Dougherty, J. D. Nichols, E. J. Bunce, W. R. Pryor, K. Baines, T. S. Stallard, H. Melin, and F. J. Crary (2016), Saturn kilometric radiation intensities during the Saturn auroral campaign of 2013, Icarus, 263, 2–9, doi:10.1016/j.icarus.2015.01.003.

Gustin, J., D. Grodent, L. C. Ray, B. Bonfond, and E. J. Bunce (2016), Characteristics of north Jovian aurora from STIS FUV spectral images, Icarus, doi:10.1016/j.icarus.2015.12.048.

Badman, S. V., G. Provan, E. J. Bunce, D. G. Mitchell, H. Melin, S. W. H. Cowley, A. Radioti, W. S. Kurth, W. R. Pryor, J. D. Nichols, S. L. Jinks, T. S. Stallard, R. H. Brown, K. H. Baines, and M. K. Dougherty (2016b), Saturn’s auroral morphology and field-aligned currents during a solar wind compression, Icarus, 263, 83–93, doi:10.1016/j.icarus.2014.11.014.

Badman, S. V., B. Bonfond, M. Fujimoto, R. L. Gray, Y. Kasaba, S. Kasahara, T. Kimura, H. Melin, J. D. Nichols, A. J. Steffl, C. Tao, F. Tsuchiya, A. Yamazaki, M. Yoneda, I. Yoshikawa, and K. Yoshioka (2016a), Weakening of Jupiter's main auroral emission during January 2014, Geophys. Res. Lett., (In press), doi:10.1002/2015GL067366.

Alexander, R. D., G. A. Wynn, H. Mohammed, J. D. Nichols, and B. Ercolano (2016), Mag- netospheres of hot Jupiters: hydrodynamic models and ultraviolet absorption, Mon. Not. R. Astron. Soc., 456(3), 2766–2778, doi:10.1093/mnras/stv2867.

March 1, 2016Nichols, J. D., G. A. Wynn, M. Goad, R. D. Alexander, S. L. Casewell, S. W. H. Cowley, M. R. Burleigh, J. T. Clarke, and D. V. Bisikalo (2015b), Hubble Space Telescope Observations of the NUV Transit of WASP-12b, Ap. J., 803(1), 9, doi:10.1088/0004-637X/803/1/9.

Nichols, J. D., N. Achilleos, and S. W. H. Cowley (2015a), A model of force balance in Jupiter’s magnetodisc including hot plasma pressure anisotropy, J. Geophys. Res., 120, doi: 10.1002/2015JA021807.

Delamere, P. A., F. Bagenal, C. P. Paranicas, A. Masters, A. Radioti, B. Bonfond, L. Ray, X. Jia, J. D. Nichols, and C. Arridge (2015), Solar Wind and Internally Driven Dynamics: Influences on Magnetodiscs and Auroral Responses, Space Sci. Rev., 187(1), 51–97, doi:10.1007/s11214- 014-0075-1.

Cowley, S. W. H., J. D. Nichols, and C. M. Jackman (2015), Down-tail mass loss by plasmoids in Jupiter's and Saturn's magnetospheres, Journal of Geophysical Research: Space Physics, 120(8), 6347–6356, doi:10.1002/2015JA021500.

Nichols, J. D., S. V. Badman, K. H. Baines, R. H. Brown, E. J. Bunce, J. T. Clarke, S. W. H. Cowley, F. J. Crary, J.-C. G ́erard, A. Grocott, D. Grodent, W. S. Kurth, H. Melin, D. G. Mitchell, W. R. Pryor, and T. S. Stallard (2014), Dynamic auroral storms on Saturn as observed by the Hubble Space Telescope, Geophys. Res. Lett., 41(10), 3323–3330, doi: 10.1002/2014GL060186.

Molyneux, P. M., N. P. Bannister, E. J. Bunce, D. Grodent, J. T. Clarke, K. Fleury-Frenette, J.- C. G ́erard, J. Lapington, J. D. Nichols, E. Renotte, and L. Rossi (2014), Isolating auroral FUV emission lines using compact, broadband instrumentation, Planet. Space Sci., 103, 291–298, doi:10.1016/j.pss.2014.08.007.

Meredith, C. J., S. W. H. Cowley, and J. D. Nichols (2014b), Survey of Saturn auroral storms observed by the Hubble Space Telescope: Implications for storm time scales, J. Geophys. Res., 119(1), 9624–9642, doi:10.1002/2014JA020601.

Meredith, C. J., I. I. Alexeev, S. V. Badman, E. S. Belenkaya, S. W. H. Cowley, M. K. Dougherty, V. V. Kalegaev, G. R. Lewis, and J. D. Nichols (2014a), Saturn’s dayside ultraviolet auroras: Evidence for morphological dependence on the direction of the upstream interplanetary mag- netic field, J. Geophys. Res., 119(3), 1994–2008, doi:10.1002/2013JA019598.

G ́omez de Castro, A. I., T. Appourchaux, M. A. Barstow, M. Barth ́el`emy, F. Baudin, S. Benetti, P. Blay, N. Brosch, E. J. Bunce, D. de Martino, J. M. Deharveng, R. Ferlet, K. France, M. Garc`ıa, B. G ̈ansicke, C. Gry, L. Hillenbrand, E. Josselin, C. Kehrig, L. Lamy, J. Lapington, A. Lecavelier des Etangs, F. LePetit, J. L ́opez-Santiago, B. Milliard, R. Monier, G. Naletto, Y. Naz ́e, C. Neiner, J. D. Nichols, M. Orio, I. Pagano, C. Peroux, G. Rauw, S. Shore, M. Spaans, G. Tovmassian, A. ud Doula, and J. Vilchez (2014), Building galaxies, stars, planets and the ingredients for life between the stars. The science behind the European Ultraviolet-Visible Ob- servatory, A&A, 354(1), 229–246, doi:10.1007/s10509-014-1942-7.

Belenkaya, E. S., S. W. H. Cowley, C. J. Meredith, J. D. Nichols, V. V. Kalegaev, I. I. Alexeev, O. G. Barinov, W. O. Barinova, and M. S. Blokhina (2014), Magnetospheric magnetic field modelling for the 2011 and 2012 HST Saturn aurora campaigns - implications for auroral source regions, Ann. Geophysicae, 32(6), 689–704, doi:10.5194/angeo-32-689-2014.

Badman, S. V., C. M. Jackman, J. D. Nichols, J. T. Clarke, and J.-C. G ́erard (2014), Open flux in Saturn’s magnetosphere, Icarus, 231, 137–145, doi:10.1016/j.icarus.2013.12.004.

Wannawichian, S., J. T. Clarke, F. Bagenal, W. H. Smyth, C. A. Peterson, and J. D. Nichols (2013), Longitudinal modulation of the brightness of Io’s auroral footprint emission: Comparison with models, J. Geophys. Res., 118(6), 336–3345, doi:10.1002/jgra.50346.

Meredith, C. J., S. W. H. Cowley, K. C. Hansen, J. D. Nichols, and T. K. Yeoman (2013), Simul- taneous conjugate observations of small-scale structures in Saturn’s dayside ultraviolet auroras – implications for physical origins, J. Geophys. Res., 118 (5), 2244–2266, doi:10.1002/jgra.50270.

G ́erard, J.-C., J. Gustin, W. R. Pryor, D. Grodent, B. Bonfond, A. Radioti, G. R. Gladstone, J. T. Clarke, and J. D. Nichols (2013), Remote sensing of the energy of auroral electrons in Saturn’s atmosphere: Hubble and Cassini spectral observations, Icarus, 223(1), 211–221, doi: 10.1016/j.icarus.2012.11.033.

Nichols, J. D., M. R. Burleigh, S. L. Casewell, S. W. H. Cowley, G. A. Wynn, J. T. Clarke, and A. A. West (2012), Origin of Electron Cyclotron Maser Induced Radio Emissions at Ultracool Dwarfs: Magnetosphere-Ionosphere Coupling Currents, Ap. J., 760(1), 59, doi:10.1088/0004- 637X/760/1/59.

Nichols, J. D. (2012), Candidates for detecting exoplanetary radio emissions generated by magnetosphere-ionosphere coupling, Mon. Not. R. Astron. Soc. Lett., 427, L75–L79, doi: 10.1111/j.1745-3933.2012.01348.x.

Pryor, W. R., A. M. Rymer, D. G. Mitchell, T. W. Hill, D. T. Young, J. Saur, G. H. Jones, S. Jacobsen, S. W. H. Cowley, B. H. Mauk, A. J. Coates, J. Gustin, J.-C. G ́erard, L. Lamy, J. D. Nichols, S. M. Krimigis, L. W. Esposito, M. K. Dougherty, A. J. Jouchoux, A. I. F. Stewart, W. E. McClintock, G. M. Holsclaw, J. M. Ajello, J. E. Colwell, A. R. Hendrix, F. J. Crary, J. T. Clarke, and X. Y. Zhou (2011), The Enceladus auroral footprint at Saturn, Nature, 472(7343), 331–333, doi:10.1038/nature09928.

Nichols, J. D. (2011b), Magnetosphere-ionosphere coupling in Jupiter’s middle magnetosphere: computations including a self-consistent current sheet magnetic field model, J. Geophys. Res., 116(A10), A10232, doi:10.1029/2011ja016922.

Nichols, J. D. (2011a), Magnetosphere-ionosphere coupling at Jupiter-like exoplanets with in- ternal plasma sources: implications for detectability of auroral radio emissions, Mon. Not. R. Astron. Soc., 414(3), 2125—-2138, doi:10.1111/j.1365-2966.2011.18528.x.

Gurnett, D. A., A. M. Persoon, J. B. Groene, W. S. Kurth, M. W. Morooka, J. E. Wahlund, and J. D. Nichols (2011), The rotation of plasma at high latitudes in Saturn’s magnetosphere and its relation to the eccentric rotation of the northern and southern auroral ovals, Geophys. Res. Lett., 38(21), n/a–n/a, doi:10.1029/2011GL049547.

Belenkaya, E. S., S. W. H. Cowley, J. D. Nichols, M. S. Blokhina, and V. V. Kalegaev (2011), Magnetospheric mapping of the dayside UV auroral oval at Saturn using simultaneous HST images, Cassini IMF data, and a global magnetic field model, Ann. Geophysicae, 29(7), 1233– 1246, doi:10.5194/angeo-29-1233-2011.

Badman, S. V., N. Achilleos, K. H. Baines, R. H. Brown, E. J. Bunce, M. K. Dougherty, H. Melin, J. D. Nichols, and T. S. Stallard (2011), Location of Saturn’s northern infrared aurora determined from Cassini VIMS images, Geophys. Res. Lett., 38(3), n/a–n/a, doi: 10.1029/2010GL046193.

Wannawichian, S., J. T. Clarke, and J. D. Nichols (2010), Ten-year HST observations of the vari- ation of the Jovian satellites’ auroral footprint brightness, J. Geophys. Res., 115(A2), A02206, doi:10.1029/2009ja014456.

Nichols, J. D., S. W. H. Cowley, and L. Lamy (2010b), Dawn-dusk oscillation of Saturn’s conjugate auroral ovals, Geophys. Res. Lett., 37(24), n/a–n/a, doi:10.1029/2010GL045818.

Nichols, J. D., B. Cecconi, J. T. Clarke, J.-C. G ́erard, A. Grocott, D. Grodent, L. Lamy, and P. M. Zarka (2010a), Variation of Saturn’s UV aurora with SKR phase, Geophys. Res. Lett., 37(15), n/a–n/a, doi:10.1029/2010GL044057.

Belenkaya, E. S., I. I. Alexeev, M. S. Blokhina, E. J. Bunce, S. W. H. Cowley, J. D. Nichols, V. V. Kalegaev, V. G. Petrov, and G. Provan (2010), IMF dependence of Saturn’s auroras: modelling study of HST and Cassini data from 12–15 February 2008, Ann. Geophysicae, 28(8), 1559–1570, doi:10.5194/angeo-28-1559-2010.

Provan, G., S. W. H. Cowley, and J. D. Nichols (2009), Phase relation of planetary-period oscillations of Saturn’s auroral oval and equatorial magnetospheric magnetic field, J. Geophys. Res., 114(A4), A04205, doi:10.1029/2008JA013988.

Nichols, J. D., J. T. Clarke, J.-C. G ́erard, D. Grodent, and K. C. Hansen (2009c), Variation of different components of Jupiter’s auroral emission, J. Geophys. Res., 114(A6), A06210, doi: 10.1029/2009JA014051.

Nichols, J. D., J. T. Clarke, J.-C. G ́erard, and D. Grodent (2009b), Observations of Jovian polar auroral filaments, Geophys. Res. Lett., 36(8), L08101.

Nichols, J. D., S. V. Badman, E. J. Bunce, J. T. Clarke, S. W. H. Cowley, F. J. Crary, M. K. Dougherty, J.-C. G ́erard, D. Grodent, K. C. Hansen, W. S. Kurth, D. G. Mitchell, W. R. Pryor, T. S. Stallard, D. L. Talboys, and S. Wannawichian (2009a), Saturn’s equinoctial auroras, Geophys. Res. Lett., 36(24), L24102, doi:10.1029/2009GL041491.

Mitchell, D. G., S. M. Krimigis, C. P. Paranicas, P. C. Brandt, J. F. Carbary, E. C. Roelof, W. S. Kurth, D. A. Gurnett, J. T. Clarke, J. D. Nichols, J.-C. G ́erard, D. Grodent, M. K. Dougherty, and W. R. Pryor (2009), Recurrent energization of plasma in the midnight-to-dawn quadrant of Saturn’s magnetosphere, and its relationship to auroral UV and radio emissions, Planet. Space Sci., 57(14-15), 1732–1742, doi:10.1016/j.pss.2009.04.002.

Lamy, L., B. Cecconi, R. Prang ́e, P. M. Zarka, J. D. Nichols, and J. T. Clarke (2009), An auroral oval at the footprint of Saturn’s radiosources, colocated with the UV aurorae, J. Geophys. Res., 114(A10), A10212, doi:10.1029/2009JA014401.

Grodent, D., B. Bonfond, A. Radioti, J.-C. G ́erard, J. Xianzhe, J. D. Nichols, and J. T. Clarke (2009), The auroral footprint of Ganymede, J. Geophys. Res., 114, doi: doi:10.1029/2009JA014289.

Grocott, A., S. V. Badman, S. W. H. Cowley, S. E. Milan, J. D. Nichols, and T. K. Yeo- man (2009), Magnetosonic Mach number dependence of the efficiency of reconnection be- tween planetary and interplanetary magnetic fields, J. Geophys. Res., 114, A07219, doi: doi:10.1029/2009JA014330.

Clarke, J. T., J. D. Nichols, J.-C. G ́erard, D. Grodent, K. C. Hansen, W. S. Kurth, G. R. Gladstone, J. Duval, S. Wannawichian, E. J. Bunce, S. W. H. Cowley, F. J. Crary, M. K.

Dougherty, L. Lamy, D. G. Mitchell, W. R. Pryor, K. D. Retherford, T. S. Stallard, B. Zieger, P. M. Zarka, and B. Cecconi (2009), Response of Jupiter’s and Saturn’s auroral activity to the solar wind, J. Geophys. Res., 114(A), A05210, doi:10.1029/2008JA013694.

Nichols, J. D., J. T. Clarke, S. W. H. Cowley, J. Duval, A. J. Farmer, J.-C. G ́erard, D. Grodent, and S. Wannawichian (2008), Oscillation of Saturn’s southern auroral oval, J. Geophys. Res., 113(A11), A11205, doi:10.1029/2008JA013444.

Grodent, D., B. Bonfond, J.-C. G ́erard, A. Radioti, J. Gustin, J. T. Clarke, J. D. Nichols, and J. E. P. Connerney (2008), Auroral evidence of a localized magnetic anomaly in Jupiter’s northern hemisphere, J. Geophys. Res., 113(A12), 9201, doi:10.1029/2008JA013185.

Cowley, S. W. H., C. S. Arridge, E. J. Bunce, J. T. Clarke, A. J. Coates, M. K. Dougherty, J.-C. G ́erard, D. Grodent, J. D. Nichols, and D. L. Talboys (2008), Auroral current systems in Saturn’s magnetosphere: comparison of theoretical models with Cassini and HST observations, Ann. Geophysicae, 26(9), 2613–2630, doi:10.5194/angeo-26-2613-2008.

Bunce, E. J., C. S. Arridge, J. T. Clarke, A. J. Coates, S. W. H. Cowley, M. K. Dougherty, J.-C. G ́erard, D. Grodent, K. C. Hansen, J. D. Nichols, D. J. Southwood, and D. L. Talboys (2008), Origin of Saturn’s aurora: Simultaneous observations by Cassini and the Hubble Space Telescope, J. Geophys. Res., 113(A12), 9209, doi:10.1029/2008JA013257.

Nichols, J. D., E. J. Bunce, J. T. Clarke, S. W. H. Cowley, J.-C. G ́erard, D. Grodent, and W. R. Pryor (2007), Response of Jupiter’s UV auroras to interplanetary conditions as observed by the Hubble Space Telescope during the Cassini flyby campaign, J. Geophys. Res., 112 (A11), A02203, doi:10.1029/2006JA012005.

Gladstone, G. R., S. A. Stern, D. C. Slater, M. Versteeg, M. W. Davis, K. D. Retherford, L. A. Young, A. J. Steffl, H. Throop, J. W. Parker, H. A. Weaver, A. F. Cheng, G. S. Orton, J. T. Clarke, and J. D. Nichols (2007), Jupiter’s Nightside Airglow and Aurora, Science, 318(5848), 229–231, doi:10.1126/science.1147613.

Cowley, S. W. H., J. D. Nichols, and D. J. Andrews (2007), Modulation of Jupiter’s plasma flow, polar currents, and auroral precipitation by solar wind-induced compressions and expansions of the magnetosphere: a simple theoretical model, Ann. Geophysicae, 25, 1433–1463.

Bunce, E. J., S. W. H. Cowley, I. I. Alexeev, C. S. Arridge, M. K. Dougherty, J. D. Nichols, and C. T. Russell (2007), Cassini observations of the variation of Saturn’s ring current parameters with system size, J. Geophys. Res., 112(A11), A10202, doi:10.1029/2007JA012275.

Nichols, J. D., S. W. H. Cowley, and D. J. McComas (2006), Magnetopause reconnection rate estimates for Jupiter’s magnetosphere based on interplanetary measurements at ∼5AU, Ann. Geophysicae, 24, 393–406.

G ́erard, J.-C., D. Grodent, S. W. H. Cowley, D. G. Mitchell, W. S. Kurth, J. T. Clarke, E. J. Bunce, J. D. Nichols, M. K. Dougherty, F. J. Crary, and A. J. Coates (2006), Saturn’s auroral morphology and activity during quiet magnetospheric conditions, J. Geophys. Res., 111(A10), A12210, doi:10.1029/2006JA011965.

Clarke, K. E., N. Andr ́e, D. J. Andrews, A. J. Coates, S. W. H. Cowley, M. K. Dougherty, G. R. Lewis, H. J. McAndrews, J. D. Nichols, T. R. Robinson, and D. M. Wright (2006), Cassini observations of planetary-period oscillations of Saturn’s magnetopause, Geophys. Res. Lett., 33(23), L23104, doi:10.1029/2006GL027821.

Bespalov, P. A., S. S. Davydenko, S. W. H. Cowley, and J. D. Nichols (2006), Interchange instability of the plasma disk in Jupiter’s middle magnetosphere and its relation to the radial plasma density distribution, Ann. Geophysicae, 24, 2043–2055.

Alexeev, I. I., V. V. Kalegaev, E. S. Belenkaya, S. Y. Bobrovnikov, E. J. Bunce, S. W. H. Cowley, and J. D. Nichols (2006), A global magnetic model of Saturn’s magnetosphere and a comparison with Cassini SOI data, Geophys. Res. Lett., 33(8), L08101, doi:10.1029/2006GL025896.

Nichols, J. D. and S. W. H. Cowley (2005), Magnetosphere-ionosphere coupling currents in Jupiter’s middle magnetosphere: effect of magnetosphere-ionosphere decoupling by field-aligned auroral voltages, Ann. Geophysicae, 23, 799–808.

Cowley, S. W. H., I. I. Alexeev, E. S. Belenkaya, E. J. Bunce, C. E. Cottis, V. V. Kalegaev, J. D. Nichols, R. Prang ́e, and F. J. Wilson (2005), A simple axisymmetric model of magnetosphere- ionosphere coupling currents in Jupiter’s polar ionosphere, J. Geophys. Res., 110(A9), A11209, doi:10.1029/2005JA011237.

Bunce, E. J., J. D. Nichols, and S. W. H. Cowley (2005), Solar wind-magnetosphere ionosphere coupling at Jupiter, Adv. Space Res., 36(11), 2090–2099, doi:10.1016/j.asr.2005.04.016.

Nichols, J. D. and S. W. H. Cowley (2004), Magnetosphere-ionosphere coupling currents in Jupiter’s middle magnetosphere: effect of precipitation-induced enhancement of the ionospheric Pedersen conductivity, Ann. Geophysicae, 22, 1799–1827.

Nichols, J. D. and S. W. H. Cowley (2003), Magnetosphere-ionosphere coupling currents in Jupiter’s middle magnetosphere: dependence on the effective ionospheric Pedersen conductivity and iogenic plasma mass outflow rate, Ann. Geophysicae, 21, 1419–1441.

Cowley, S. W. H., E. J. Bunce, and J. D. Nichols (2003), Origins of Jupiter’s main oval auroral emissions, J. Geophys. Res., 108(A4), 8002, doi:10.1029/2002JA009329.

Cowley, S. W. H., J. D. Nichols, and E. J. Bunce (2002), Distributions of current and auroral precipitation in Jupiter’s middle magnetosphere computed from steady-state Hill-Pontius angu- lar velocity profiles: solutions for current sheet and dipole magnetic field models, Planet. Space Sci., 50, 717–734.

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