Electron precipitation associated with discrete very-low-frequency emissions

Rosenberg, T. J.; Helliwell, R. A.; Katsufrakis, J. P.

doi:10.1029/ja076i034p08445

Cited by 206 publications

(110 citation statements)

References 16 publications

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“…An extremely good correlation was observed between whistlers and X-ray bursts (microbursts) at Siple Station (ROSENBERG et al, 1971;FOSTER and ROSENBERG, 1976). The results shown in the middle panel of Fig.…”

Section: Microburst Correlation To Substorms Vlf's and Magnetic Impsupporting

confidence: 60%

“…Using omnidirectional detectors flown on two balloons, they deduced that microburst events cover regions <200km, a conclusion based on the fact that microburst events on two balloons are not correlated when the two balloons are separated by more than 200km in the lateral direction. That microbursts are small-scaled is also deduced by BROWN et al (1965). Two balloons flown from conjugate regions of the northern hemisphere detected microburst events at the same time but the individual events were not correlated.…”

Section: Occurrence In Longitude and Latitudesupporting

confidence: 56%

“…PARKS cipitation structures. Microburst-like precipitation structures have been detected subsequently in subauroal latitudes by RoSENBERG et al (1971), ZUHLIN et al (1972), TREILHOU et al (1973), andFOSTER andROSENBERG (1976). Electron precipitation with <1 second structures is also observable in visual auroras (CRESSWELL and DAvIs, 1965) and those precipitation forms which are confined to local hours near midnight (EVANS, 1967;.…”

Section: Introductionmentioning

confidence: 92%

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Microburst precipitation phenomena.

Parks

1978

J. geomagn. geoelec

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Auroral zone microburst electron precipitation is reviewed. It can be shown from existing data that microbursts represent a major precipitation form on the dayside magnetosphere. Balloon X-ray data indicate that microbursts are periodic and they are small-scaled. Rocket and sattellite data indicate that microbursts may consist of substructures and that microburst precipitation is fractionally more enhanced along the magnetic field direction. The source of electrons appears to be nearby, <4Re from the surface of the earth. Microbursts are correlated to VLF and magnetic micropulsations. Study of microburst phenomena should lead to better understanding of wave-particle interaction mechanisms responsible for electron precipitation.

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Section: Microburst Correlation To Substorms Vlf's and Magnetic Impsupporting

confidence: 60%

Section: Occurrence In Longitude and Latitudesupporting

confidence: 56%

Section: Introductionmentioning

confidence: 92%

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Microburst precipitation phenomena.

Parks

1978

J. geomagn. geoelec

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“…A more detailed review, including a description of the relevant plasma waves, is given by Millan and Thorne (2007). Not long after their discovery, low energy microbursts were associated with whistlermode chorus (e.g., Rosenberg et al 1971), and more recently the association was made for relativistic microbursts (Lorentzen et al 2001b). In order for an electron with energy of order 1 MeV to be in resonance with typically observed wave frequencies, the interaction must either occur at off-equatorial latitudes (∼30…”

Section: Wave-particle Interactionsmentioning

confidence: 99%

The Balloon Array for RBSP Relativistic Electron Losses (BARREL)

et al. 2013

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“…zone revealed that pulsating features of electron precipitation depend on magnetic local time (BARCUS et al, 1966;PARKS et al, 1968;MCPHERRON et al, 1968). In the magnetic local time sector from midnight to dawn, X-ray pulsations with typical found that fast pulsations generally comprise microbursts and are closely associated with VLF pulsations (ROSENBERG et al, 1971;FOSTER and ROSENBERG, 1976). Further, fast pulsations of X-rays and auroral pulsations have similar characteristics as local time of appearance, pulsating period, spatial scale size of 40km (BAR-CUS et al, 1966;PARKS, 1967), and eastward drift motion of 250-300m/sec (PARKS, 1967).…”

Section: Introductionmentioning

confidence: 99%

Pulsating phenomena of auroral-zone X-rays associated with quasi-periodic VLF emissions and Pc 3 magnetic pulsations.

Yamagishi

Ono

Fukunishi

et al. 1985

J. geomagn. geoelec

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A stratospheric balloon, carrying a NaI (T1) scintillation counter for measuring 20-100 keV bremsstrahlung X-ray was launched from Stamsund (L=5.6) in Norway during the recovery phase of a magnetospheric substorm. The scintillation counter recorded X-ray pulsations with periods of 20-30 s when the balloon was located at L=5.4-4.8 and at 0950-1300 MLT. A rising tone type of quasi-periodic (QP) VLF emissions and Pc 3 magnetic pulsations observed at Andoya (L=6.15), located at 160km northeast of Stamsund, were closely associated with these X-ray pulsations. The one-to-one correspondence between occurrences of QP emissions and enhancements of X-ray count rate suggests that QP emissions (whistler mode waves) modulate the pitch angle diffusion rate of energetic electrons trapped in the magnetosphere through the cyclotron interaction. Further a close relation between QP emissions and Pc 3 magnetic pulsations suggests that compressional mode Pc 3 waves propagating in radial direction from the dayside magnetopause toward the earth modulate the growth rate of whistler mode waves.

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Electron precipitation associated with discrete very-low-frequency emissions

Cited by 206 publications

References 16 publications

Microburst precipitation phenomena.

Microburst precipitation phenomena.

The Balloon Array for RBSP Relativistic Electron Losses (BARREL)

Pulsating phenomena of auroral-zone X-rays associated with quasi-periodic VLF emissions and Pc 3 magnetic pulsations.

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