Search Results - "COWLEY, S. W. H"

A model of force balance in Jupiter's magnetodisc including hot plasma pressure anisotropy by Nichols, J. D., Achilleos, N., Cowley, S. W. H.

“…We present an iterative vector potential model of force balance in Jupiter's magnetodisc that includes the effects of hot plasma pressure anisotropy. The…”
Get full text

Field-aligned currents in Saturn's southern nightside magnetosphere: Subcorotation and planetary period oscillation components by Hunt, G. J., Cowley, S. W. H., Provan, G., Bunce, E. J., Alexeev, I. I., Belenkaya, E. S., Kalegaev, V. V., Dougherty, M. K., Coates, A. J.

“…We investigate magnetic data showing the presence of field‐aligned magnetosphere‐ionosphere coupling currents on 31 Cassini passes across Saturn's southern…”
Get full text

Planetary period oscillations in Saturn's magnetosphere: Evolution of magnetic oscillation properties from southern summer to post-equinox by Andrews, D. J., Cowley, S. W. H., Dougherty, M. K., Lamy, L., Provan, G., Southwood, D. J.

“…We investigate the evolution of the properties of planetary period magnetic field oscillations observed by the Cassini spacecraft in Saturn's magnetosphere…”
Get full text

Down-tail mass loss by plasmoids in Jupiter's and Saturn's magnetospheres by Cowley, S. W. H., Nichols, J. D., Jackman, C. M.

“…Recent estimates of the plasma mass‐loss rates by the formation and down‐tail propagation of plasmoids observed in the plasma sheet in Jupiter's and Saturn's…”
Get full text

Dual periodicities in planetary-period magnetic field oscillations in Saturn's tail by Provan, G., Andrews, D. J., Arridge, C. S., Coates, A. J., Cowley, S. W. H., Cox, G., Dougherty, M. K., Jackman, C. M.

“…We examine magnetic field data from 10 apoapsis passes of the Cassini spacecraft during 2006 when the spacecraft explored the midnight and dawn sectors of…”
Get full text

Pumping out the atmosphere of Mars through solar wind pressure pulses by Edberg, N. J. T., Nilsson, H., Williams, A. O., Lester, M., Milan, S. E., Cowley, S. W. H., Fränz, M., Barabash, S., Futaana, Y.

“…We study atmospheric escape from Mars during solar wind pressure pulses. During the solar minimum of 2007–08 we have observed 41 high pressure events, which…”
Get full text

Response of Jupiter's and Saturn's auroral activity to the solar wind by Clarke, J. T., Nichols, J., Gérard, J.-C., Grodent, D., Hansen, K. C., Kurth, W., Gladstone, G. R., Duval, J., Wannawichian, S., Bunce, E., Cowley, S. W. H., Crary, F., Dougherty, M., Lamy, L., Mitchell, D., Pryor, W., Retherford, K., Stallard, T., Zieger, B., Zarka, P., Cecconi, B.

“…While the terrestrial aurorae are known to be driven primarily by the interaction of the Earth's magnetosphere with the solar wind, there is considerable…”
Get full text

Magnetic field oscillations near the planetary period in Saturn's equatorial magnetosphere: Variation of amplitude and phase with radial distance and local time by Andrews, D. J., Cowley, S. W. H., Dougherty, M. K., Provan, G.

“…We present an analysis of the ∼11 h oscillations in Saturn's near‐equatorial magnetic field, using Cassini data acquired during 2004–2007. We assume the…”
Get full text

Planetary period oscillations in Saturn's magnetosphere: comments on the relation between post-equinox periods determined from magnetic field and SKR emission data by Cowley, S. W. H., Provan, G.

“…We discuss the properties of Saturn planetary period oscillations (PPOs) deduced from analysis of Saturn kilometric radiation (SKR) modulations by Fischer et…”
Get full text

Cassini observations of plasmoid structure and dynamics: Implications for the role of magnetic reconnection in magnetospheric circulation at Saturn by Jackman, C. M., Slavin, J. A., Cowley, S. W. H.

“…We survey the Cassini magnetometer data during the deep tail orbits in 2006, and find 34 direct encounters with plasmoids. They occur as single, isolated…”
Get full text

Cassini observations of ion and electron beams at Saturn and their relationship to infrared auroral arcs by 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.

“…We present Cassini Visual and Infrared Mapping Spectrometer observations of infrared auroral emissions from the noon sector of Saturn's ionosphere revealing…”
Get full text

Dawn-dusk oscillation of Saturn's conjugate auroral ovals by Nichols, J. D., Cowley, S. W. H., Lamy, L.

“…We present observations of the oscillation of the dawn‐dusk locations of Saturn's northern and southern UV auroral ovals obtained using the Hubble Space…”
Get full text

Earth-based detection of Uranus' aurorae by Lamy, L., Prangé, R., Hansen, K. C., Clarke, J. T., Zarka, P., Cecconi, B., Aboudarham, J., André, N., Branduardi-Raymont, G., Gladstone, R., Barthélémy, M., Achilleos, N., Guio, P., Dougherty, M. K., Melin, H., Cowley, S. W. H., Stallard, T. S., Nichols, J. D., Ballester, G.

“…This study is based on multi‐planet multi‐wavelength observations of planetary aurorae throughout the heliosphere, acquired along the propagation path of a…”
Get full text

Polarization and phase of planetary-period magnetic field oscillations on high-latitude field lines in Saturn's magnetosphere by Provan, G., Andrews, D. J., Arridge, C. S., Coates, A. J., Cowley, S. W. H., Milan, S. E., Dougherty, M. K., Wright, D. M.

“…We examine magnetic field data obtained by the Cassini spacecraft on a sequence of high‐latitude orbits in Saturn's magnetosphere spanning October 2006 to May…”
Get full text

Atmospheric erosion of Venus during stormy space weather by Edberg, N. J. T., Nilsson, H., Futaana, Y., Stenberg, G., Lester, M., Cowley, S. W. H., Luhmann, J. G., McEnulty, T. R., Opgenoorth, H. J., Fedorov, A., Barabash, S., Zhang, T. L.

“…We study atmospheric escape from Venus during solar minimum conditions when 147 corotating interaction regions (CIRs) and interplanetary coronal mass ejections…”
Get full text

Phase relation of oscillations near the planetary period of Saturn's auroral oval and the equatorial magnetospheric magnetic field by Provan, G., Cowley, S. W. H., Nichols, J. D.

“…Previous analyses of Hubble Space Telescope (HST) images of Saturn's southern auroras obtained during two campaigns, in January 2007 and February 2008, have…”
Get full text

Planetary period oscillations in Saturn's magnetosphere: Evidence in magnetic field phase data for rotational modulation of Saturn kilometric radiation emissions by Andrews, D. J., Cecconi, B., Cowley, S. W. H., Dougherty, M. K., Lamy, L., Provan, G., Zarka, P.

“…Initial Voyager observations of Saturn kilometric radiation (SKR) indicated that the modulations in emitted power near the ∼11 h planetary rotation period are…”
Get full text

Morphological differences between Saturn's ultraviolet aurorae and those of Earth and Jupiter by Clarke, J. T, Gérard, J.-C, Grodent, D, Wannawichian, S, Gustin, J, Connerney, J, Crary, F, Dougherty, M, Kurth, W, Cowley, S. W. H, Bunce, E. J, Hill, T, Kim, J

“…It has often been stated that Saturn's magnetosphere and aurorae are intermediate between those of Earth, where the dominant processes are solar wind driven,…”
Get full text

Characterization of auroral current systems in Saturn's magnetosphere: High-latitude Cassini observations by Talboys, D. L., Arridge, C. S., Bunce, E. J., Coates, A. J., Cowley, S. W. H., Dougherty, M. K.

“…We have identified seven periapsis passes during the first high‐latitude phase of the Cassini mission, from mid‐2006 to mid‐2007, in which the spacecraft…”
Get full text

Thickness of Saturn's ring current determined from north‐south Cassini passes through the current layer by Kellett, S., Bunce, E. J., Coates, A. J., Cowley, S. W. H.

“…We investigate magnetic field and plasma electron data from six Cassini orbits during which, unique within the mission to date, the spacecraft passed almost…”
Get full text