User profiles for A. D. Johnstone
Aaron JohnstonePostdoc, University of California San Diego Verified email at ucsd.edu Cited by 294 |
PEACE: A plasma electron and current experiment
AD Johnstone, C Alsop, S Burge, PJ Carter… - The Cluster and Phoenix …, 1997 - Springer
An electron analyser to measure the three-dimensional velocity distribution of electrons in
the energy range from 0.59 eV to 26.4 keV on the four spacecraft of the Cluster mission is …
the energy range from 0.59 eV to 26.4 keV on the four spacecraft of the Cluster mission is …
Pulsating aurora
AD Johnstone - Nature, 1978 - nature.com
The aurora is caused by showers of atomic particles in the upper atmosphere, but there are
uncertainties about the particles' movements just before they strike the atmosphere. The …
uncertainties about the particles' movements just before they strike the atmosphere. The …
An active current sheet in the solar wind
…, PJ Christiansen, AJ Coates, DS Hall, AD Johnstone… - Nature, 1985 - nature.com
The supersonic solar wind possesses a variety of simple small scale (<10-min observation
duration) phenomena, including discontinuities 1–3 and magnetic holes 4,5 . We report here …
duration) phenomena, including discontinuities 1–3 and magnetic holes 4,5 . We report here …
[PDF][PDF] XIAP regulates caspase activity in degenerating axons
Our knowledge of the destructive events that regulate axonal degeneration is rudimentary.
Here, we examine the role of caspases and their endogenous inhibitor, the X-linked inhibitor …
Here, we examine the role of caspases and their endogenous inhibitor, the X-linked inhibitor …
The temporal evolution of electron distributions and associated wave activity following substorm injections in the inner magnetosphere
NP Meredith, RB Horne, AD Johnstone… - Journal of …, 2000 - Wiley Online Library
… [Johnstone t al., 1993]. The early pitch angle diffusion calculations for whistler mode waves
interacting with > 20 keV electrons at L = 4 show that whistler mode waves can form pancake …
interacting with > 20 keV electrons at L = 4 show that whistler mode waves can form pancake …
Satellite observations of suprathermal electron bursts
AD Johnstone, JD Winningham - Journal of Geophysical …, 1982 - Wiley Online Library
Data from the ISIS 2 satellite are used to study the spatial distribution of the suprathermal
electron bursts discovered by high‐altitude sounding rockets. It is found that the bursts form an …
electron bursts discovered by high‐altitude sounding rockets. It is found that the bursts form an …
[HTML][HTML] Remodeling of the actin/spectrin membrane-associated periodic skeleton, growth cone collapse and F-actin decrease during axonal degeneration
…, FM Barabas, LA Masullo, AD Johnstone… - Scientific reports, 2018 - nature.com
Axonal degeneration occurs in the developing nervous system for the appropriate
establishment of mature circuits, and is also a hallmark of diverse neurodegenerative diseases. …
establishment of mature circuits, and is also a hallmark of diverse neurodegenerative diseases. …
Velocity space diffusion of pickup ions from the water group at comet Halley
AJ Coates, AD Johnstone, B Wilken… - Journal of …, 1989 - Wiley Online Library
We have studied the diffusion in velocity space of cometary ions using the distributions of
ions measured by the implanted ion spectrometer on Giotto during the inbound pass. The …
ions measured by the implanted ion spectrometer on Giotto during the inbound pass. The …
[HTML][HTML] Observations of the solar wind and cometary ions during the encounter between Giotto and comet Grigg-Skjellerup
AD Johnstone, AJ Coates… - … and Astrophysics, vol …, 1993 - adsabs.harvard.edu
The solar wind interaction with the outfiowing gas from a second comet has been recorded
by the same in-situ instrumentation that was used for the comet Halley encounter m 1986. …
by the same in-situ instrumentation that was used for the comet Halley encounter m 1986. …
Spectral characteristics of low‐frequency plasma turbulence upstream of comet P/Halley
…, ML Goldstein, AD Johnstone… - Journal of …, 1989 - Wiley Online Library
Spectral characteristics of low‐frequency plasma turbulence in a cometary environment
have been determined using cross‐spectral analyses of magnetic field and plasma …
have been determined using cross‐spectral analyses of magnetic field and plasma …