تقرير
The Rapid Variability of Wave Electric Fields Within and Near Quasiperpendicular Interplanetary Shock Ramps: STEREO Observations
| العنوان: | The Rapid Variability of Wave Electric Fields Within and Near Quasiperpendicular Interplanetary Shock Ramps: STEREO Observations |
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| المؤلفون: | Z. A. Cohen, C. A. Cattell, A. W. Breneman, L. Davis, P. Grul, K. Kersten, L. B. Wilson III, J. R. Wygant |
| المصدر: | Astrophysical Journal. 904(2) |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Astronomy, Astrophysics |
| الوصف: | We present STEREO observations within 1500 proton gyroradii of 12 quasiperpendicular interplanetary shocks, with long-duration burst mode electric �field acquisition by S/WAVES enabling observation of the evolution of waves throughout the entire ramp of interplanetary shocks. The shocks are low Mach number (Mf ~1-5), with beta (��) ~0.2-1.8. High variability in frequency, amplitude, and wave mode is observed upstream, downstream, and in shock ramps. Observations in every region include ion acoustic-like waves, electron cyclotron drift instability driven waves, electrostatic solitary waves, and high frequency whistler mode waves. We also show for the fi�rst time the existence of electrostatic waves with frequencies in the ion acoustic range which are frequency dispersed in time and the �first observations of electron cyclotron drift instability (ECDI) driven waves at interplanetary shocks. The waves are bursty, large amplitude (~5 to > 200 mV/m), and seen in all three regions. All wave modes are more commonly observed downstream than upstream. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 1538-4357 0004-637X |
| DOI: | 10.3847/1538-4357/abbeec |
| URL الوصول: | https://ntrs.nasa.gov/citations/20205008418 |
| ملاحظات: | 958044.04.01 NNX16AF80G NNX14AK73G 80NSSC19K0305 |
| رقم الأكسشن: | edsnas.20205008418 |
| قاعدة البيانات: | NASA Technical Reports |
| تدمد: | 15384357 0004637X |
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| DOI: | 10.3847/1538-4357/abbeec |