Correlations between solar wind parameters and auroral kilometric radiation intensity

D. L. Gallagher; N. D'Angelo

doi:10.1029/GL008i010p01087

Correlations between solar wind parameters and auroral kilometric radiation intensity

D. L. Gallagher
, N. D'Angelo

Instrumentation Group

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

The relationship between solar wind properties and the influx of energy into the nightside auroral region, as indicated by the intensity of auroral kilometric radiation, is investigated. Fluctuations, as large as three orders of magnitude and with periods related to the solar rotation period, are found in the observed intensity of auroral kilometric radiation. Correlations are made with solar wind ion density, bulk flow speed (V_sw), total IMF strength (B_sw), |V_sw × B_sw| electric field, solar wind V_swB_s (where B_s is the southward component of the IMF B_z), solar wind V_sw²B_sw and V_swB_sw², and the substorm parameter ϵ (= V_swB_sw²sin⁴(θ/2)L_o²). The best correlation is between the solar wind bulk flow speed and the intensity of auroral kilometric radiation. For the 203 daily averages examined, a linear correlation coefficient of 0.78 is found.

Original language	English
Pages (from-to)	1087-1089
Number of pages	3
Journal	Geophysical Research Letters
Volume	8
Issue number	10
DOIs	https://doi.org/10.1029/GL008i010p01087
State	Published - Oct 1981

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title = "Correlations between solar wind parameters and auroral kilometric radiation intensity",

abstract = "The relationship between solar wind properties and the influx of energy into the nightside auroral region, as indicated by the intensity of auroral kilometric radiation, is investigated. Fluctuations, as large as three orders of magnitude and with periods related to the solar rotation period, are found in the observed intensity of auroral kilometric radiation. Correlations are made with solar wind ion density, bulk flow speed (Vsw), total IMF strength (Bsw), |Vsw × Bsw| electric field, solar wind VswBs (where Bs is the southward component of the IMF Bz), solar wind Vsw²Bsw and VswBsw², and the substorm parameter ϵ (= VswBsw²sin4(θ/2)Lo²). The best correlation is between the solar wind bulk flow speed and the intensity of auroral kilometric radiation. For the 203 daily averages examined, a linear correlation coefficient of 0.78 is found.",

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T1 - Correlations between solar wind parameters and auroral kilometric radiation intensity

AU - Gallagher, D. L.

AU - D'Angelo, N.

PY - 1981/10

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N2 - The relationship between solar wind properties and the influx of energy into the nightside auroral region, as indicated by the intensity of auroral kilometric radiation, is investigated. Fluctuations, as large as three orders of magnitude and with periods related to the solar rotation period, are found in the observed intensity of auroral kilometric radiation. Correlations are made with solar wind ion density, bulk flow speed (Vsw), total IMF strength (Bsw), |Vsw × Bsw| electric field, solar wind VswBs (where Bs is the southward component of the IMF Bz), solar wind Vsw²Bsw and VswBsw², and the substorm parameter ϵ (= VswBsw²sin4(θ/2)Lo²). The best correlation is between the solar wind bulk flow speed and the intensity of auroral kilometric radiation. For the 203 daily averages examined, a linear correlation coefficient of 0.78 is found.

AB - The relationship between solar wind properties and the influx of energy into the nightside auroral region, as indicated by the intensity of auroral kilometric radiation, is investigated. Fluctuations, as large as three orders of magnitude and with periods related to the solar rotation period, are found in the observed intensity of auroral kilometric radiation. Correlations are made with solar wind ion density, bulk flow speed (Vsw), total IMF strength (Bsw), |Vsw × Bsw| electric field, solar wind VswBs (where Bs is the southward component of the IMF Bz), solar wind Vsw²Bsw and VswBsw², and the substorm parameter ϵ (= VswBsw²sin4(θ/2)Lo²). The best correlation is between the solar wind bulk flow speed and the intensity of auroral kilometric radiation. For the 203 daily averages examined, a linear correlation coefficient of 0.78 is found.

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U2 - 10.1029/GL008i010p01087

DO - 10.1029/GL008i010p01087

M3 - Article

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SN - 0094-8276

VL - 8

SP - 1087

EP - 1089

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 10

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Correlations between solar wind parameters and auroral kilometric radiation intensity

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