Imperial College London
Alternate

ProfessorMicheleDougherty

Faculty of Natural Sciences, Department of Physics

Head of Department of Physics, Professor of Space Physics
 
 
 
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Contact

 

+44 (0)20 7594 7770m.dougherty Website

 
 
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Assistant

 

Ms Lida Mnatsakanian +44 (0)20 7594 7503

 
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Location

 

Blackett 900aBlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

403 results found

Smith EJ, Dougherty MK, Russell CT, Southwood DJet al., 2001, Scalar helium magnetometer observations at Cassini Earth swing-by, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 106, Pages: 30129-30139, ISSN: 2169-9380

Journal article

Abel GA, Coates AJ, Rymer AM, Linder DR, Thomsen MF, Young DT, Dougherty MKet al., 2001, Cassini Plasma Spectrometer observations of bidirectional lobe electrons during the Earth flyby, August 18, 1999, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 106, Pages: 30199-30208, ISSN: 2169-9380

Journal article

Hospodarsky GB, Averkamp TF, Kurth WS, Gurnett DA, Dougherty M, Inan U, Wood Tet al., 2001, Wave normal and Poynting vector calculations using the Cassini radio and plasma wave instrument, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 106, Pages: 30253-30269, ISSN: 2169-9380

Journal article

Southwood DJ, Dougherty MK, Balogh A, Cowley SWH, Smith EJ, Tsurutani BT, Russell CT, Siscoe GL, Erdos G, Glassmeier KH, Gleim F, Neubauer FMet al., 2001, Magnetometer measurements from the Cassini Earth swing-by, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 106, Pages: 30109-30128, ISSN: 2169-9380

Journal article

Achilleos N, Miller S, Prangé R, Millward G, Dougherty MKet al., 2001, A dynamical model of Jupiter's auroral electrojet, NEW JOURNAL OF PHYSICS, Vol: 3, Pages: 31-320, ISSN: 1367-2630

Journal article

Petkaki P, Dougherty MK, 2001, Waves close to the crossover frequency in the Jovian Middle Magnetosphere, GEOPHYSICAL RESEARCH LETTERS, Vol: 28, Pages: 211-214, ISSN: 0094-8276

Journal article

Dougherty MK, 2001, Saturn: magnetosphere, Encyclopedia of astronomy and astrophysics, Editors: Murdin, Bristol; London, Publisher: Institute of Physics Publishing; Nature Publishing Group, Pages: 2361-2367, ISBN: 9780333750889

Book chapter

Petkaki P, Dougherty MK, 2001, ULF wave observations in Jupiter's magnetosphere, D3 1/C3 3 Symposium of COSPAR Scientific Commission D held at the 33rd COSPAR Scientific Assembly, Publisher: ELSEVIER SCIENCE BV, Pages: 909-914, ISSN: 0273-1177

Conference paper

Coates AJ, Dougherty MK, 2001, Cassini-Huygens by Jove, Frontiers, Vol: 10, Pages: 4-4

Journal article

Espinosa SA, Dougherty MK, 2001, Unexpected periodic perturbations in Saturn's magnetic field data from Pioneer 11 and Voyager 2, D3 1/C3 3 Symposium of COSPAR Scientific Commission D held at the 33rd COSPAR Scientific Assembly, Publisher: ELSEVIER SCIENCE BV, Pages: 919-924, ISSN: 0273-1177

Conference paper

Edwards TM, Balogh A, Cowley SWH, Dougherty MK, Dunlop MW, Forsyth RJ, Laxton NF, Staines Ket al., 2000, Azimuthal field perturbations in the Jovian magnetosphere: Ulysses observations, Pages: 108-111, ISSN: 1405-2059

Azimuthal magnetic field perturbations observed by the Ulysses spacecraft during the inbound and outbound passes of the Jovian magnetosphere are compared with theoretically calculated values based on the transfer of angular momentum from the ionosphere to the magnetosphere due to departures from corotation of the magnetospheric plasma. On the inbound pass a "lagging" field configuration was observed corresponding to regions of subcorotational flow. The peak azimuthal fields were found to fall with radial distance as r -1:4. Good theoretical agreement is obtained with the observed values using a value for the Pedersen conductivity of 0:136 ± 0:028 mho. This value is smaller than the 0:4 mho obtained by Vasyliunas from the analysis of the Pioneer 10 and the Voyager 1 and 2 data. The difference is due to the larger fields observed by the latter spacecraft to which the theory was fitted. On the outbound pass the theory gives good agreement with two large "lagging" field signatures where the flow is again subcorotational. At larger distances, however, the presence of a consistently "leading" field configuration is observed which is not predicted by the theory, since the flow was still subcorotational in this region. This "leading" configuration is suggested to be due to the tail-magnetopause current system.

Conference paper

Espinosa SA, Dougherty MK, 2000, Periodic perturbations in Saturn's magnetic field, GEOPHYSICAL RESEARCH LETTERS, Vol: 27, Pages: 2785-2788, ISSN: 0094-8276

Journal article

Petkaki P, Dougherty M, 2000, Wave signatures in the Jovian magnetosphere, PLANETARY AND SPACE SCIENCE, Vol: 48, Pages: 341-350, ISSN: 0032-0633

Journal article

Wilson RJ, Dougherty MK, 2000, Evidence provided by Galileo of ultra low frequency waves within Jupiter's middle magnetosphere, GEOPHYSICAL RESEARCH LETTERS, Vol: 27, Pages: 835-838, ISSN: 0094-8276

Journal article

Wilson RJ, Dougherty MK, 2000, Ultra-low frequency waves in the Jovian magnetosphere as observed by Galileo, Geophysical Research Letters, Vol: 27, Pages: 835-838

Journal article

Dunlop MW, Dougherty MK, Kellock S, Southwood DJet al., 1999, Operation of the dual magnetometer on Cassini: science performance, Symposium on The Jovian System after Galieo/The Santurnian System before Cassini-Huygens, Publisher: PERGAMON-ELSEVIER SCIENCE LTD, Pages: 1389-1405, ISSN: 0032-0633

Conference paper

Krupp N, Dougherty MK, Woch J, Seidel R, Keppler Eet al., 1999, Energetic particles in the duskside Jovian Magnetosphere, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 104, Pages: 14767-14780, ISSN: 2169-9380

Journal article

Dougherty MK, Dunlop MW, Prange R, Rego Det al., 1998, Correspondence between field aligned currents observed by Ulysses and HST auroral emission, PLANETARY AND SPACE SCIENCE, Vol: 46, Pages: 531-+, ISSN: 0032-0633

Journal article

Dougherty MK, Dunlop MW, Prange R, Rego Det al., 1998, Identification of a current-driven aurora on Jupiter via correlated Ulysses and HST observations, Planetary and Space Science, Vol: 46, Pages: 531-540

Journal article

Seidel R, Keppler E, Krupp N, Woch J, Hawkins SE, Lanzerotti LJ, Dougherty MKet al., 1997, Energetic electron beams in the duskside Jovian magnetosphere: Ulysses EPAC and HI-SCALE measurements, PLANETARY AND SPACE SCIENCE, Vol: 45, Pages: 1473-+, ISSN: 0032-0633

Journal article

Lofting CFA, Dougherty MK, Southwood DJ, 1997, The Coriolis effect in a rapidly rotating magnetosphere, C3.2 Symposium of COSPAR Scientific Commission C on Planetary Ionospheres and Magnetospheres, at the 31st COSPAR Scientific Assembly, Publisher: PERGAMON PRESS LTD, Pages: 239-242, ISSN: 0273-1177

Conference paper

Krupp N, Keppler E, Seidel R, Woch J, Korth A, Cheng AF, Hawkins SE, Lanzerotti LJ, Maclennan CG, Dougherty MKet al., 1997, Field-aligned particle streaming in the duskside high latitude Jovian magnetosphere, C3.2 Symposium of COSPAR Scientific Commission C on Planetary Ionospheres and Magnetospheres, at the 31st COSPAR Scientific Assembly, Publisher: PERGAMON PRESS LTD, Pages: 225-228, ISSN: 0273-1177

Conference paper

Dougherty MK, Southwood DJ, Lachin A, 1997, Ion cyclotron waves in the Jovian magnetosphere, Advances in Space Research, Vol: 20, Pages: 215-219

Journal article

Dougherty MK, Balogh A, Southwood DJ, Smith EJet al., 1996, Ulysses assessment of the Jovian planetary field, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 101, Pages: 24929-24941, ISSN: 2169-9380

Journal article

Hoogeveen GW, Phillips JL, Dougherty MK, 1996, Ulysses observations of corotation lags in the dayside Jovian magnetosphere: An evaluation of the hinged magnetodisc and magnetic anomaly models, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 101, Pages: 21439-21446, ISSN: 2169-9380

Journal article

Cowley SWH, Balogh A, Dougherty MK, Dunlop MW, Edwards TM, Forsyth RJ, Hynds RJ, Laxton NF, Staines Ket al., 1996, Plasma flow in the Jovian magnetosphere and related magnetic effects: Ulysses observations, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 101, Pages: 15197-15210, ISSN: 2169-9380

Journal article

THOMPSON P, DOUGHERTY MK, SOUTHWOOD DJ, 1995, WAVE BEHAVIOR NEAR-CRITICAL FREQUENCIES IN COLD BI-ION PLASMAS, PLANETARY AND SPACE SCIENCE, Vol: 43, Pages: 625-634, ISSN: 0032-0633

Journal article

LEAMON RJ, DOUGHERTY MK, SOUTHWOOD DJ, HAYNES PLet al., 1995, MAGNETIC NULLS IN THE OUTER MAGNETOSPHERE OF JUPITER - DETECTIONS BY PIONEER AND VOYAGER SPACECRAFT, JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, Vol: 100, Pages: 1829-1835, ISSN: 2169-9380

Journal article

KRUPP N, KEPPLER E, KORTH A, FRANZ M, REUSS MK, BALOGH A, DOUGHERTY MKet al., 1995, Ion measurements in the Jovian magnetosphere by the Ulysses EPAC experiment: A comparison between dawn and dusk sectors, D1 Symposium of COSPAR Scientific Commission D, at the 30th COSPAR Scientific Assembly, Pages: 183-186

We report on results from the EPAC experiment on board the Ulysses spacecraft during the Jupiter Flyby in February 1992. We compare ion anisotropies (E = 0.24-0.77 MeV/N) received on the inbound pass in the noon sector at low magnetic latitudes with those from the outbound pass in the dusk sector at high magnetic latitudes. The results can be summarized as follows: (1) The classification of an inner and middle magnetosphere is observed inbound at low magnetic latitudes as well as outbound at high magnetic latitudes. (2) Three-dimensional anisotropies of ions in the noon sector were found in the corotation direction with radial components, whereas in the dusk sector field aligned anisotropies as well as anisotropies in corotation and anti-corotation were observed. (3) The steady increase of He/O with increasing latitude in the inner magnetosphere suggests the ionosphere as an internal He-source. (4) We find a difference in the He/O-ratio between the day- and the dusk side of the magnetosphere.

Conference paper

SOUTHWOOD DJ, DOUGHERTY MK, LEAMON RJ, HAYNES PLet al., 1995, ORIGIN AND DYNAMICS OF FIELD NULLS DETECTED IN THE JOVIAN MAGNETOSPHERE, D1 Symposium of COSPAR Scientific Commission D, at the 30th COSPAR Scientific Assembly, Publisher: PERGAMON PRESS LTD, Pages: 177-181, ISSN: 0273-1177

Conference paper

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