@article{631625faec944f2f881a5537e23b93ec,
title = "Electrostatic Electron Cyclotron Harmonic Waves as a Candidate to Cause Pulsating Auroras",
abstract = "Pulsating auroras (PsAs) are thought to be generated by precipitating electrons scattered by lower-band chorus (LBC) waves near the magnetic equator. One-to-one correlation between the LBC intensity and the PsA intensity has been reported. Electrostatic electron cyclotron harmonic (ECH) waves can also scatter electrons. However, direct correlation between ECH and PsA has not been reported yet. In this study, using a coordinated Exploration of energization and Radiation in Geospace (Arase) satellite and ground-based imager observation, we report that not only LBC but also ECH have correlation with PsA. We estimated the precipitating electron energy by assuming that the time lag when the cross-correlation coefficient became the highest was travel time of electrons from the modulation region. We found that the estimated energies show reasonable values as the cyclotron resonance energy of each wave.",
keywords = "Arase, chorus, electrostatic electron cyclotron harmonic, inner magnetosphere, pulsating aurora, wave-particle interaction",
author = "M. Fukizawa and T. Sakanoi and Y. Miyoshi and K. Hosokawa and K. Shiokawa and Y. Katoh and Y. Kazama and A. Kumamoto and F. Tsuchiya and Y. Miyashita and Tanaka, {Y. M.} and Y. Kasahara and M. Ozaki and A. Matsuoka and S. Matsuda and M. Hikishima and S. Oyama and Y. Ogawa and S. Kurita and R. Fujii",
note = "Funding Information: This work has been supported by Japan Society for the Promotion of Science (JSPS) JP 14J02108, 15H05815, JP 15H05747, JP 16H06286, 17K05668, and JP 18H03727. The operation of the EMCCD camera at Sodankyl{\"a} has been supported by Sodankyl{\"a} Geophysical Observatory (SGO), University of Oulu. Science data of the Arase satellite and EMCCD data were obtained from the ERG Science Center operated by ISAS/JAXA and ISEE/Nagoya University (https://ergsc.isee.nagoya-u.ac.jp/index. shtml.en). The data of the EMCCD data (100 Hz) can be downloaded from the ERG Science Center (https://ergsc.isee. nagoya-u.ac.jp/psa-pwing/pub/dset/). The present study analyzed the Arase MGF v01.01 CDF and Arase PWE/OFA v02_01 data CDF. The PWE/OFA-MATRIX Level 1 prime (v11) and the MGF Level 2 64 Hz v01.00 data were used to evaluate the propagation characteristics of chorus. These data will be publicly available from the ERG Science Center based on a project-agreed schedule. Funding Information: This work has been supported by Japan Society for the Promotion of Science (JSPS) JP 14J02108, 15H05815, JP 15H05747, JP 16H06286, 17K05668, and JP 18H03727. The operation of the EMCCD camera at Sodankyl? has been supported by Sodankyl? Geophysical Observatory (SGO), University of Oulu. Science data of the Arase satellite and EMCCD data were obtained from the ERG Science Center operated by ISAS/JAXA and ISEE/Nagoya University (https://ergsc.isee.nagoya-u.ac.jp/index.shtml.en). The data of the EMCCD data (100?Hz) can be downloaded from the ERG Science Center (https://ergsc.isee.nagoya-u.ac.jp/psa-pwing/pub/dset/). The present study analyzed the Arase MGF v01.01 CDF and Arase PWE/OFA v02_01 data CDF. The PWE/OFA-MATRIX Level 1 prime (v11) and the MGF Level 2 64?Hz v01.00 data were used to evaluate the propagation characteristics of chorus. These data will be publicly available from the ERG Science Center based on a project-agreed schedule. Publisher Copyright: {\textcopyright}2018. American Geophysical Union. All Rights Reserved.",
year = "2018",
month = dec,
day = "16",
doi = "10.1029/2018GL080145",
language = "English",
volume = "45",
pages = "12,661--12,668",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "23",
}