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Title: The Characteristic Response of Whistler Mode Waves to Interplanetary Shocks

Magnetospheric whistler mode waves play a key role in regulating the dynamics of the electron radiation belts. Recent satellite observations indicate a significant influence of interplanetary (IP) shocks on whistler mode wave power in the inner magnetosphere. In this study, we statistically investigate the response of whistler mode chorus and plasmaspheric hiss to IP shocks based on Van Allen Probes and THEMIS satellite observations. Immediately after the IP shock arrival, chorus wave power is usually intensified, often at postmidnight to prenoon sector, while plasmaspheric hiss wave power predominantly decreases near the dayside but intensifies near the nightside. We conclude that chorus wave intensification outside the plasmasphere is probably associated with the suprathermal electron flux enhancement caused by the IP shock. Through a simple ray tracing modeling assuming the scenario that plasmaspheric hiss is originated from chorus, we find that the solar wind dynamic pressure increase changes the magnetic field configuration to favor ray penetration in the nightside and promote ray refraction away from the dayside, potentially explaining the magnetic local time–dependent responses of plasmaspheric hiss waves following IP shock arrivals.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [3] ; ORCiD logo [4] ; ORCiD logo [3] ;  [3] ; ORCiD logo [3] ; ORCiD logo [3] ; ORCiD logo [5] ; ORCiD logo [6] ; ORCiD logo [7] ; ORCiD logo [8]
  1. Univ. of California, Los Angeles, CA (United States); Univ. Corp. for Atmospheric Research, Boulder, CO (United States)
  2. Univ. of Texas at Dallas, Richardson, TX (United States)
  3. Univ. of California, Los Angeles, CA (United States)
  4. Univ. of California, Los Angeles, CA (United States); Boston Univ., Boston, MA (United States)
  5. Wuhan Univ., Wuhan (China)
  6. Univ. of Iowa, Iowa City, IA (United States)
  7. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Space Sciences Division at the New Mexico Consortium, Los Alamos, NM (United States)
  8. Univ. of New Hampshire, Durham, NH (United States)
Publication Date:
Report Number(s):
LA-UR-17-31422
Journal ID: ISSN 2169-9380
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Space Physics
Additional Journal Information:
Journal Volume: 122; Journal Issue: 10; Journal ID: ISSN 2169-9380
Publisher:
American Geophysical Union
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
National Aeronautic and Space Administration (NASA); USDOE
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Heliospheric and Magnetospheric Physics; IP shocks; plasmaspheric hiss; whistler mode chorus; ray tracing; MLT dependent
OSTI Identifier:
1440491

Yue, Chao, Chen, Lunjin, Bortnik, Jacob, Ma, Qianli, Thorne, Richard M., Angelopoulos, Vassilis, Li, Jinxing, An, Xin, Zhou, Chen, Kletzing, Craig, Reeves, Geoffrey D., and Spence, Harlan E.. The Characteristic Response of Whistler Mode Waves to Interplanetary Shocks. United States: N. p., Web. doi:10.1002/2017JA024574.
Yue, Chao, Chen, Lunjin, Bortnik, Jacob, Ma, Qianli, Thorne, Richard M., Angelopoulos, Vassilis, Li, Jinxing, An, Xin, Zhou, Chen, Kletzing, Craig, Reeves, Geoffrey D., & Spence, Harlan E.. The Characteristic Response of Whistler Mode Waves to Interplanetary Shocks. United States. doi:10.1002/2017JA024574.
Yue, Chao, Chen, Lunjin, Bortnik, Jacob, Ma, Qianli, Thorne, Richard M., Angelopoulos, Vassilis, Li, Jinxing, An, Xin, Zhou, Chen, Kletzing, Craig, Reeves, Geoffrey D., and Spence, Harlan E.. 2017. "The Characteristic Response of Whistler Mode Waves to Interplanetary Shocks". United States. doi:10.1002/2017JA024574. https://www.osti.gov/servlets/purl/1440491.
@article{osti_1440491,
title = {The Characteristic Response of Whistler Mode Waves to Interplanetary Shocks},
author = {Yue, Chao and Chen, Lunjin and Bortnik, Jacob and Ma, Qianli and Thorne, Richard M. and Angelopoulos, Vassilis and Li, Jinxing and An, Xin and Zhou, Chen and Kletzing, Craig and Reeves, Geoffrey D. and Spence, Harlan E.},
abstractNote = {Magnetospheric whistler mode waves play a key role in regulating the dynamics of the electron radiation belts. Recent satellite observations indicate a significant influence of interplanetary (IP) shocks on whistler mode wave power in the inner magnetosphere. In this study, we statistically investigate the response of whistler mode chorus and plasmaspheric hiss to IP shocks based on Van Allen Probes and THEMIS satellite observations. Immediately after the IP shock arrival, chorus wave power is usually intensified, often at postmidnight to prenoon sector, while plasmaspheric hiss wave power predominantly decreases near the dayside but intensifies near the nightside. We conclude that chorus wave intensification outside the plasmasphere is probably associated with the suprathermal electron flux enhancement caused by the IP shock. Through a simple ray tracing modeling assuming the scenario that plasmaspheric hiss is originated from chorus, we find that the solar wind dynamic pressure increase changes the magnetic field configuration to favor ray penetration in the nightside and promote ray refraction away from the dayside, potentially explaining the magnetic local time–dependent responses of plasmaspheric hiss waves following IP shock arrivals.},
doi = {10.1002/2017JA024574},
journal = {Journal of Geophysical Research. Space Physics},
number = 10,
volume = 122,
place = {United States},
year = {2017},
month = {9}
}