Publications

Diamond Experiment In the MagnetOSphere (DEIMOS): a Collisionless Shocks and Solar Wind Mission Concept for the Lunar Gateway

Published in Journal of Geophysical Research: Space Physics, 2024

Recommended citation: Shonibare, T., Murphy, K. R., & Pakhotin, I. P. (2024). Diamond experiment in the magnetosphere (DEIMOS): A collisionless shocks and solar wind mission concept for the Lunar Gateway. Journal of Geophysical Research: Space Physics, 129, e2024JA032728. https://doi.org/10.1029/2024JA032728 https://doi.org/10.1029/2024JA032728

Persistent pitch angle anisotropies of relativistic electrons in the outer radiation belts

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Greeley, A. D., Kanekal, S. G., Schiller, Q., Blum, L., Halford, A., Murphy, K., et al. (2024). Persistent pitch angle anisotropies of relativistic electrons in the outer radiation belts. Journal of Geophysical Research: Space Physics, 129, e2023JA031549. https://doi.org/10.1029/2023JA031549 https://doi.org/10.1029/2023JA031549

Extreme Birkeland Currents Are More Likely During Geomagnetic Storms on the Dayside of the Earth

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Coxon, J. C., Chisham, G., Freeman, M. P., Forsyth, C., Walach, M.-T., Murphy, K. R., et al. (2023). Extreme Birkeland currents are more likely during geomagnetic storms on the dayside of the Earth. Journal of Geophysical Research: Space Physics, 128, e2023JA031946. https://doi.org/10.1029/2023JA031946 https://doi.org/10.1029/2023JA031946

Van Allen Probes Observations of a Three-Dimensional Field Line Resonance at a Plasmaspheric Plume

Published in Geophysical Research Letters, 2023

Recommended citation: Sandhu, J. K., Degeling, A. W., Elsden, T., Murphy, K. R., Rae, I. J., Wright, A. N., et al. (2023). Van Allen Probes observations of a three-dimensional field line resonance at a plasmaspheric plume. Geophysical Research Letters, 50, e2023GL106715. https://doi.org/10.1029/2023GL106715 https://doi.org/10.1029/2023GL106715

The Response of Electron Pitch Angle Distributions to the Upper Limit on Stably Trapped Particles

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Walton, S. D., Mann, I. R., Olifer, L., Ozeke, L. G., Forsyth, C., Rae, I. J., et al. (2023). The response of electron pitch angle distributions to the upper limit on stably trapped particles. Journal of Geophysical Research: Space Physics, 128, e2023JA031988. https://doi.org/10.1029/2023JA031988 https://doi.org/10.1029/2023JA031988

A New Four-Component L*-dependent Model for Radial Diffusion based on Solar Wind and Magnetospheric Drivers of ULF Waves

Published in Space Weather, 2023

Recommended citation: Murphy, K. R., Sandhu, J., Rae, I. J., Daggitt, T., Glauert, S., Horne, R. B., et al. (2023). A new four-component L*-dependent model for radial diffusion based on solar wind and magnetospheric drivers of ULF waves. Space Weather, 21, e2023SW003440. https://doi.org/10.1029/2023SW003440 https://doi.org/10.1029/2023SW003440

Statistical Characterization of the Dynamic Near-Earth Plasma Sheet Relative to Ultra-Low Frequency (ULF) Wave Growth at Substorm Onset

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Smith, A. W., Rae, I. J., Forsyth, C., Watt, C. E. J., & Murphy, K. R. (2023). Statistical characterization of the dynamic near-Earth plasma sheet relative to Ultra-Low Frequency (ULF) wave growth at substorm onset. Journal of Geophysical Research: Space Physics, 128, e2022JA030491. https://doi.org/10.1029/2022JA030491 ttps://doi.org/10.1029/2022JA030491

Statistical Comparison of Electron Loss and Enhancement in the Outer Radiation Belt During Storms

Published in Journal of Geophysical Research: Space Physics, 2022

Recommended citation: Walton, S. D., Forsyth, C., Rae, I. J., Meredith, N. P., Sandhu, J. K., Walach, M.-T., & Murphy, K. R. (2022). Statistical comparison of electron loss and enhancement in the outer radiation belt during storms. Journal of Geophysical Research: Space Physics, 127, e2021JA030069. https://doi.org/10.1029/2021JA030069 https://doi.org/10.1029/2021JA030069

Resolving Magnetopause Shadowing Using Multimission Measurements of Phase Space Density

Published in Journal of Geophysical Research: Space Physics, 2022

Recommended citation: Staples, F. A., Kellerman, A., Murphy, K. R., Rae, I. J., Sandhu, J. K., & Forsyth, C. (2022). Resolving magnetopause shadowing using multimission measurements of phase space density. Journal of Geophysical Research: Space Physics, 127, e2021JA029298. https://doi.org/10.1029/2021JA029298 https://doi.org/10.1029/2021JA029298

Imaging the magnetosphere-ionosphere system with ground-based and in-situ magnetometers

Published in Magnetospheric Imaging, 2022

Recommended citation: Murphy, K. R., Bentley, S. N., Miles, D., Sandhu, J. K., & Smith, A. (2022). Imaging the magnetosphere-ionosphere system with ground-based and in-situ magnetometers. In Y. Collado-Vega, D. Gallagher, H. Frey, & S. Wing (Eds.), Magnetospheric Imaging: Understanding the Space Environment through Global Measurements (pp. 287-340). Elsevier. https://doi.org/10.1016/B978-0-12-820630-0.00002-7 https://doi.org/10.1016/B978-0-12-820630-0.00002-7

Can Earth’s Magnetotail Plasma Sheet Produce a Source of Relativistic Electrons for the Radiation Belts?

Published in Geophysical Research Letters, 2021

Recommended citation: Turner, D. L., Cohen, I. J., Michael, A., Sorathia, K., Merkin, S., Mauk, B. H., et al. (2021). Can Earth's magnetotail plasma sheet produce a source of relativistic electrons for the radiation belts? Geophysical Research Letters, 48, e2021GL095495. https://doi.org/10.1029/2021GL095495 https://doi.org/10.1029/2021GL095495

Diagnosing the Time-Dependent Nature of Magnetosphere-Ionosphere Coupling via ULF Waves at Substorm Onset

Published in Journal of Geophysical Research: Space Physics, 2020

Recommended citation: Smith, A. W., Rae, I. J., Forsyth, C., Watt, C. E. J., Murphy, K. R., & Mann, I. R. (2020). Diagnosing the time-dependent nature of magnetosphere-ionosphere coupling via ULF waves at substorm onset. Journal of Geophysical Research: Space Physics, 125, e2020JA028573.  https://doi.org/10.1029/2020JA028573

Driving of Outer Belt Electron Loss by Solar Wind Dynamic Pressure Structures: Analysis of Balloon and Satellite Data

Published in Journal of Geophysical Research: Space Physics, 2020

Recommended citation: Breneman, A. W., Halford, A. J., Millan, R. M., Woodger, L. A., Zhang, X.-J., Sandhu, J. K., et al. (2020). Driving of outer belt electron loss by solar wind dynamic pressure structures: Analysis of balloon and satellite data. Journal of Geophysical Research: Space Physics, 125, e2020JA028097. https://doi.org/10.1029/2020JA028097

A Framework for Understanding and Quantifying the Loss and Acceleration of Relativistic Electrons in the Outer Radiation Belt During Geomagnetic Storms

Published in Space Weather, 2020

Recommended citation: Murphy, K. R., Mann, I. R., Sibeck, D. G., Rae, I. J., Watt, C. E. J., Ozeke, L. G., et al. (2020). A Framework for Understanding and Quantifying the Loss and Acceleration of Relativistic Electrons in the Outer Radiation Belt During Geomagnetic Storms. Space Weather, 18(5). https://doi.org/10.1029/2020SW002477

Rapid Outer Radiation Belt Flux Dropouts and Fast Acceleration During the March 2015 and 2013 Storms: The Role of Ultra-Low Frequency Wave Transport From a Dynamic Outer Boundary

Published in Journal of Geophysical Research: Space Physics, 2020

Recommended citation: Ozeke, L. G., Mann, I. R., Olifer, L., Dufresne, K. Y., Morley, S. K., Claudepierre, S. G., et al. (2020). Rapid Outer Radiation Belt Flux Dropouts and Fast Acceleration During the March 2015 and 2013 Storms: The Role of Ultra-Low Frequency Wave Transport From a Dynamic Outer Boundary. Journal of Geophysical Research: Space Physics, 125(2). https://doi.org/10.1029/2019JA027179

Ultra-Low-Frequency Wave-Particle Interactions

Published in  Geomagnetism, aeronomy and space weather , 2019

Recommended citation: Mann, I. R., Ozeke, L. G., Degeling, A., Murphy, K. R., and Rankin, R. (2019). Ultra-Low-Frequency Wave-Particle Interactions in Mandea, M., Korte, M., Yau, A., & Petrovsky, E. (Eds.), pages 190-194. Geomagnetism, aeronomy and space weather : A journey from the earth's core to the sun. https://doi.org/10.1017/9781108290135.016

Magnetosphere-Ionosphere Coupling and Ionospheric Dynamics during Storms and Substorms: Role of Alfven Waves

Published in  Geomagnetism, aeronomy and space weather , 2019

Recommended citation: Mann, I. R. , Pakhotin, I. P. , Rae, I. J. , Murphy, K. R. , Ozeke, L. G., Knudsen, D. J., Kale, A., and Milling, D. K. (2019). Magnetosphere-Ionosphere Coupling and Ionospheric Dynamics during Storms and Substorms: Role of Alfven Waves in Mandea, M., Korte, M., Yau, A., & Petrovsky, E. (Eds.), pages 229-250. Geomagnetism, aeronomy and space weather : A journey from the earth's core to the sun. https://doi.org/10.1017/9781108290135.016

Determining the Mode, Frequency, and Azimuthal Wave Number of ULF Waves During a HSS and Moderate Geomagnetic Storm

Published in Journal of Geophysical Research: Space Physics, 2018

Recommended citation: Murphy, K. R., Inglis, A. R., Sibeck, D. G., Rae, I. J., Watt, C. E. J., Silveira, M., et al. (2018). Determining the Mode, Frequency, and Azimuthal Wave Number of ULF Waves During a HSS and Moderate Geomagnetic Storm. Journal of Geophysical Research: Space Physics, 123(8). https://doi.org/10.1029/2017JA024877

Diagnosing the Role of Alfven Waves in Magnetosphere-Ionosphere Coupling: Swarm Observations of Large Amplitude Nonstationary Magnetic Perturbations During an Interval of Northward IMF

Published in Journal of Geophysical Research: Space Physics, 2018

Recommended citation: Pakhotin, I. P., Mann, I. R., Lysak, R. L., Knudsen, D. J., Gjerloev, J. W., Rae, I. J., et al. (2018). Diagnosing the Role of Alfvén Waves in Magnetosphere-Ionosphere Coupling: Swarm Observations of Large Amplitude Nonstationary Magnetic Perturbations During an Interval of Northward IMF. Journal of Geophysical Research: Space Physics, 123(1). https://doi.org/10.1002/2017JA024713

Comparative study of large-scale auroral signatures of substorms, steady magnetospheric convection events, and sawtooth events

Published in Journal of Geophysical Research: Space Physics, 2017

Recommended citation: Walach, M. T., Milan, S. E., Murphy, K. R., Carter, J. A., Hubert, B. A., & Grocott, A. (2017). Comparative study of large-scale auroral signatures of substorms, steady magnetospheric convection events, and sawtooth events. Journal of Geophysical Research: Space Physics. https://doi.org/10.1002/2017JA023991

Accurately characterizing the importance of wave-particle interactions in radiation belt dynamics: The pitfalls of statistical wave representations

Published in Journal of Geophysical Research: Space Physics, 2016

Recommended citation: Murphy, K. R., Mann, I. R., Rae, I. J., Sibeck, D. G., & Watt, C. E. J. (2016). Accurately characterizing the importance of wave-particle interactions in radiation belt dynamics: The pitfalls of statistical wave representations. Journal of Geophysical Research: Space Physics, 121(8), 7895-7899. https://doi.org/10.1002/2016JA022618

Inner magnetospheric onset preceding reconnection and tail dynamics during substorms: Can substorms initiate in two different regions?

Published in Journal of Geophysical Research: Space Physics, 2014

Recommended citation: Murphy, K. R., Mann, I. R., Rae, I. J., Walsh, A. P., & Frey, H. U. (2014). Inner magnetospheric onset preceding reconnection and tail dynamics during substorms: Can substorms initiate in two different regions? Journal of Geophysical Research: Space Physics, 119(12), 9684-9701. https://doi.org/10.1002/2014JA019795

In situ spatiotemporal measurements of the detailed azimuthal substructure of the substorm current wedge

Published in Journal of Geophysical Research: Space Physics, 2014

Recommended citation: Forsyth, C., Fazakerley, A. N., Rae, I. J., Watt, C. E. J. J., Murphy, K., Wild, J. A., et al. (2014). In situ spatiotemporal measurements of the detailed azimuthal substructure of the substorm current wedge. Journal of Geophysical Research A: Space Physics, 119(2), 927-946. https://doi.org/10.1002/2013JA019302

The correlation of ULF waves and auroral intensity before, during and after substorm expansion phase onset

Published in Journal of Geophysical Research: Space Physics, 2012

Recommended citation: Rae, I. J., Watt, C. E. J., Murphy, K. R., Frey, H. U., Ozeke, L. G., Milling, D. K., & Mann, I. R. (2012). The correlation of ULF waves and auroral intensity before, during and after substorm expansion phase onset. Journal of Geophysical Research: Space Physics, 117(8), 1-12. https://doi.org/10.1029/2012JA017534

Ground-based magnetometer determination of in situ Pc4-5 ULF electric field wave spectra as a function of solar wind speed

Published in Journal of Geophysical Research: Space Physics, 2012

Recommended citation: Rae, I. J., Mann, I. R., Murphy, K. R., Ozeke, L. G., Milling, D. K., Chan, A. A., et al. (2012). Ground-based magnetometer determination of in situ Pc4-5 ULF electric field wave spectra as a function of solar wind speed. Journal of Geophysical Research: Space Physics, 117(4), 1-17. https://doi.org/10.1029/2011JA017335

Reply to comment by K. Liou and Y.-L. Zhang on Wavelet-based ULF wave diagnosis of substorm expansion phase onset

Published in Journal of Geophysical Research: Space Physics, 2009

Recommended citation: Murphy, K. R., Rae, I. J., Mann, I. R., Walsh, A. P., Milling, D. K., Watt, C. E. J., et al. (2009). Reply to comment by K. Liou and Y.-L. Zhang on Wavelet-based ULF wave diagnosis of substorm expansion phase onset. Journal of Geophysical Research, 114(A10), A10207. https://doi.org/10.1029/2009JA014351