Results 21 to 30 of about 166,601 (310)

Estimated nitric oxide density in auroras from ground-based photometric data

Solar-Terrestrial Physics, 2019
In this paper, we numerically estimate the nitric oxide density in auroras, using photometric data on 427.8, 557.7, and 630.0 nm emission intensities. The data were obtained at midnight at observatories of the Polar Geophysical Institute. These estimates
Dashkevich Zh.V., Ivanov V.E.
doaj   +1 more source

Substorm related changes in precipitation in the dayside auroral zone-a multi instrument case study [PDF]

, 2002
International audienceA period (08:10?14:40 MLT, 11 February 1997) of enhanced electron density in the D- and E-regions is investigated using EISCAT, IRIS and other complementary instruments.
J. Manninen (7637285), E. Donovan (7591466), I. W. McCrea, Honary, F., Manninen, J., P. C. Anderson, A. J. Kavanagh (7614089), F. Honary (7604621), E. Donovan, I. W. McCrea (7594871), Kavanagh, A. J., A. J. Kavanagh, P. C. Anderson (7637288), McCrea, I. W., F. Honary, J. Manninen, E. E. Woodfield (7590071), E. E. Woodfield, Donovan, E., Woodfield, E. E., Anderson, P. C.   +20 more
core   +1 more source

Simultaneous Precipitation of Sub‐Relativistic Electron Microburst and Pulsating Aurora Electrons

Geophysical Research Letters, 2023
Abstract We have identified for the first time an energy‐time dispersion of precipitating electron flux in a pulsating aurora patch, ranging from 6.7 to 580 keV, through simultaneous in‐situ observations of sub‐relativistic electrons of microburst precipitations and lower‐energy electrons using the Loss through Auroral Microburst ...
Taku Namekawa, Takefumi Mitani, Kazushi Asamura, Yoshizumi Mioshi, Keisuke Hosokawa, Marc R Lessard, Chrystal Moser, Alexa J. Halford, Takeshi Sakanoi, Miki Kawamura, Masahito Nosé, Reiko Nomura, Mariko Teramoto, Mykhaylo Shumko, Kristina A Lynch, Allison N Jaynes, Matthew G McHarg   +16 more
openaire   +2 more sources

Energetic particle precipitation into the middle atmosphere triggered by a coronal mass ejection [PDF]

, 2007
Precipitation of relativistic electrons into the atmosphere has been suggested as the primary loss mechanism for radiation belt electrons during large geomagnetic storms.
Mccarthy, M.P., Rodger, C. J., Ulich, T., Kavanagh, A.J., Spanswick, E., Clilverd, M. A., Kokorowski, M., Rodger, C.J., Sample, J.G., Millan, R.M., Sample, J. G., Millan, R. M., McCarthy, M. P., Clilverd, M.A., Raita, T., Kavanagh, Andrew J.   +15 more
core   +1 more source

Early-Time Non-Equilibrium Pitch Angle Diffusion of Electrons by Whistler-Mode Hiss in a Plasmaspheric Plume Associated with BARREL Precipitation

Frontiers in Astronomy and Space Sciences, 2021
In August 2015, the Balloon Array for Radiation belt Relativistic Electron Losses (BARREL) observed precipitation of energetic (<200 keV) electrons magnetically conjugate to a region of dense cold plasma as measured by the twin Van Allen Probes ...
R. M. Millan, J.-F. Ripoll, J.-F. Ripoll, O. Santolík, O. Santolík, W. S. Kurth   +5 more
doaj   +1 more source

Study of auroral forms and electron precipitation with the IRIS, DASI and EISCAT systems [PDF]

, 2002
International audienceSimultaneous observations with the IRIS, DASI and EISCAT systems are employed in the study of the spatial distribution and temporal evolution of auroral forms and precipitation regions during substorm activity.
del Pozo, C. F., N. Stamatiou, Kosch, M. J., M. J. Kosch, Stamatiou, N., F. Honary, Honary, F., C. F. del Pozo   +7 more
core   +1 more source

The Effect of Compression Induced Chorus Waves on 10–100 s eV Electron Precipitation

Geophysical Research Letters, 2023
On 7 January 2014, a solar storm erupted, which eventually compressed the Earth's magnetosphere leading to the generation of chorus waves. These waves enhanced local wave‐particle interactions and led to the precipitation of electrons from 10 s eV to 100 
A. J. Halford, K. Garcia‐Sage, I. R. Mann, D. L. Turner, A. W. Breneman   +4 more
doaj   +1 more source

Particle precipitation during ICME-driven and CIR-driven geomagnetic storms [PDF]

, 2008
Interplanetary coronal mass ejections (ICME) and corotating interaction regions (CIR) alter the parameters of the solar wind and interplanetary magnetic field (IMF) that affect conditions in the Earth's magnetosphere and particle precipitation in the ...
N. Longden, Honary, Farideh, Denton, Michael H., F. Honary, Longden, N., M. H. Denton   +5 more
core   +1 more source

A Method for Imaging Energetic Particle Precipitation With Subionospheric VLF Signals

Earth and Space Science, 2023
Energetic particle precipitation (EPP) is a key loss mechanism for radiation belt particles. Quantification of the precipitation loss rate feeds into the electron lifetimes used by radiation belt models and is needed to improve understanding of radiation
Forrest Gasdia, Robert A. Marshall
doaj   +1 more source

The driving mechanisms of particle precipitation during the moderate geomagnetic storm of 7 January 2005 [PDF]

, 2007
International audienceThe arrival of an interplanetary coronal mass ejection (ICME) triggered a sudden storm commencement (SSC) at ~09:22 UT on the 7 January 2005. The ICME followed a quiet period in the solar wind and interplanetary magnetic field (IMF).
N. Longden, Kavanagh, A. J., A. J. Kavanagh, F. Honary, J. Manninen, Honary, F., Manninen, J., Longden, N.   +7 more
core   +1 more source