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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.39 [2010] >
IJRSP Vol.39(6) [December 2010] >
| Title: | Tri-diurnal anisotropy of cosmic ray daily variation for the solar cycle 23 |
| Authors: | Singh, Kamlesh
Shrivastava, Pankaj K |
| Keywords: | Cosmic rays
Tri-diurnal anisotropy
Solar activity |
| Issue Date: | Dec-2010 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 96.50.sb |
| Abstract: | An extensive study
of tri-diurnal anisotropy of cosmic ray daily variations for the period 1996 –
2006 has been carried out using cosmic ray neutron monitor data of Kiel and
Beijing. The daily and yearly averages of tri-diurnal wave amplitude and phase
have been obtained to observe long term behaviour of third harmonic of cosmic
ray daily variation. The relation between amplitudes and phases (annual and
daily averages) of tri-diurnal data for these two different cut off rigidities
has been shown. No long-term variational trend is seen in tri-diurnal
anisotropy. On day-to-day analysis, a well defined peak in tri-diurnal
amplitude between 0.06% and 0.010% is observed. |
| Page(s): | 341-345 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.39(6) [December 2010]
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