1988
DOI: 10.1029/ja093ia07p07515
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Ordinary mode auroral kilometric radiation fine structure observed by DE 1

Abstract: The fine structure observed with intense right‐hand extraordinary (R‐X) mode auroral kilometric radiation (AKR) has received major theoretical attention. Data from the Dynamics Explorer 1 plasma wave instrument indicate that left‐hand ordinary (L‐O) mode AKR possesses similar fine structure. Several theories have been proposed to explain the fine structure of the R‐X mode AKR. In order to account for the L‐O mode fine structure, these theories will have to be modified to produce the L‐O mode directly or will h… Show more

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Cited by 37 publications
(36 citation statements)
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“…If upwelling plasma from the ionosphere increases the background plasma density around AKR sources in summer or solar maximum period, it is possible that occurrence probability of R‐X mode AKR decreases, as shown in Figure 3. Later, L‐O mode AKR was also focused on by Jikiken [ Oya and Morioka , 1983], ISIS 1 [ Benson , 1984, 1985] and DE 1 [ Mellott et al , 1984; Benson et al , 1988; Calvert and Hashimoto , 1990]. Hewitt et al [1982] have shown that the growth rate of R‐X mode waves can be less than that of L‐O mode waves when f p / f c is larger than 0.3 due to the extreme suppression of R‐X mode waves in dense cold plasma, where f p and f c are plasma frequency and electron cyclotron frequency, respectively.…”
Section: Discussionmentioning
confidence: 99%
“…If upwelling plasma from the ionosphere increases the background plasma density around AKR sources in summer or solar maximum period, it is possible that occurrence probability of R‐X mode AKR decreases, as shown in Figure 3. Later, L‐O mode AKR was also focused on by Jikiken [ Oya and Morioka , 1983], ISIS 1 [ Benson , 1984, 1985] and DE 1 [ Mellott et al , 1984; Benson et al , 1988; Calvert and Hashimoto , 1990]. Hewitt et al [1982] have shown that the growth rate of R‐X mode waves can be less than that of L‐O mode waves when f p / f c is larger than 0.3 due to the extreme suppression of R‐X mode waves in dense cold plasma, where f p and f c are plasma frequency and electron cyclotron frequency, respectively.…”
Section: Discussionmentioning
confidence: 99%
“…AKR emission is well-known to be narrow-band and bursty, with complex, short-duration drifting features (e.g., Gurnett, 1974; Benson et al, 1988). We have processed more than 50 epochs of 4-spacecraft VLBI observations, each of which has a duration between 1-3 h.…”
Section: Akr Burst Locationsmentioning
confidence: 99%
“…Vários estudos mostraram que as regiões geradoras da AKR não possuem uma estrutura suave, sendo compostas de muitas regiões de aumentos e rarefações na densidade de plasma. Essas variações são responsáveis pela emissão discreta da radiação [27].…”
Section: Akr E Suas Característicasunclassified