The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 35 Issue 2
- /
- Pages.51.1-51.1
- /
- 2010
- /
- 1226-2692(pISSN)
Local time dependent Pi2 frequencies observed by THEMIS spacecraft near dawn and dusk in the inner magnetosphere
-
Kim, Gwan-Hyeok
(School of Space Research, Kyung Hee Univ.) ;
- Gwon, Hyeok-Jin (School of Space Research, Kyung Hee Univ.) ;
-
Lee, Dong-Hun
(School of Space Research, Kyung Hee Univ.) ;
-
Lee, Eun-Sang
(School of Space Research, Kyung Hee Univ.) ;
- Takahashi, K. (Applied Physics Laboratory, Johns Hopkins Univ.) ;
- Angelopoulos, V. (IGPP, Univ. of California) ;
- Mozer, F. (Space Science Laboratory, Univ. of California) ;
- Glassmeier, K.H. (IGEP, Technical Univ. of Braunschweig) ;
- Park, Y.D. (Korea Astronomy and Space Science Institute) ;
- Sutcliffe, P. (Hermanus Magnetic Observatory)
- Published : 2010.10.06
Abstract
We report an example of Pi2 pulsation exhibiting different frequency between dawn and dusk. This Pi2 pulsation occurred around 1932 UT on February 14, 2008, and was observed at low-latitude Bohyun (BOH, L = 1.35, MLT = 3.8) and Hermanus (HER, L = 1.83, MLT = 20.1) stations. The pulsation starts simultaneously at both stations but the frequency is higher at BOH than at HER. At the time of the Pi2, THEMIS-A (THA) and THEMIS-D (THD) were on dawn (L = 2.9, MLT = 5.3) and dusk (L = 2.8, MLT = 18), respectively, in the inner magnetosphere. We find a nearly identical waveform and period between THA
Keywords