LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Frequency‐Dependent Responses of Plasmaspheric Hiss to the Impact of an Interplanetary Shock

Photo by rachelhisko from unsplash

Plasmaspheric hiss waves are essential for the pitch‐angle scattering and precipitation of energetic electrons and interplanetary shocks may affect these waves. We present a case study on the responses of… Click to show full abstract

Plasmaspheric hiss waves are essential for the pitch‐angle scattering and precipitation of energetic electrons and interplanetary shocks may affect these waves. We present a case study on the responses of plasmaspheric hiss after an interplanetary shock arrival on September 7, 2017. Based on the observation by RBSP‐B, the plasmaspheric hiss in different frequency ranges shows three different responses simultaneously: hiss waves with frequency below 0.08fce are weakened, waves within 0.08–0.18fce are weakened in magnetic power and modulated by the ultra‐low frequency (ULF) waves in the electric power, while waves above 0.18fce are intensified in magnetic power and modulated by the ULF waves. Further analysis suggests that the hiss waves have different sources: low‐frequency (<∼0.18fce) hiss waves are transmitted from chorus outside the plasmasphere, while high‐frequency (>∼0.18fce) hiss waves are locally amplified. Our results provide a comprehensive view of the frequency‐dependent hiss wave behavior after the impact of interplanetary shocks.

Keywords: frequency dependent; plasmaspheric hiss; responses plasmaspheric; frequency; interplanetary shock; hiss waves

Journal Title: Geophysical Research Letters
Year Published: 2021

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.