Correlation analysis of solar flux absolute measurements at 161 and 245 MHz
Solar emission in meter waves originates from upper layers of the solar corona. We present absolute measurements of solar flux from Irkutsk Incoherent Scatter Radar (161 MHz frequency) and Learmonth Observatory (245 MHz frequency). We perform correlation analysis to investigate the relation between...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
INFRA-M
2023-12-01
|
| Series: | Solar-Terrestrial Physics |
| Subjects: | |
| Online Access: | https://naukaru.ru/en/nauka/article/64828/view |
| _version_ | 1797363722428088320 |
|---|---|
| author | Setov A. G. Kushnarev D. S. |
| author_facet | Setov A. G. Kushnarev D. S. |
| author_sort | Setov A. G. |
| collection | DOAJ |
| description | Solar emission in meter waves originates from upper layers of the solar corona. We present absolute measurements of solar flux from Irkutsk Incoherent Scatter Radar (161 MHz frequency) and Learmonth Observatory (245 MHz frequency). We perform correlation analysis to investigate the relation between solar flux values at different frequencies. Background emission of the quiet Sun is within the expected limits. We examine the behavior of background and slowly-varying emission components during a solar cycle. By comparing the Pearson correlation coefficient with the Spearman rank correlation coefficient, we have found that the dependence of the meter flux on the F10.7 index is non-linear. The correlation between solar flux measurements at 161 and 245 MHz appeared to be lower than that with the F10.7 index. Analysis of daily correlation and autocorrelation shows a diurnal variation that introduces an error into the measurements. |
| first_indexed | 2024-03-08T16:25:14Z |
| format | Article |
| id | doaj.art-39ed15d99aca474682f0fcfa4b694321 |
| institution | Directory Open Access Journal |
| issn | 2500-0535 |
| language | English |
| last_indexed | 2024-03-08T16:25:14Z |
| publishDate | 2023-12-01 |
| publisher | INFRA-M |
| record_format | Article |
| series | Solar-Terrestrial Physics |
| spelling | doaj.art-39ed15d99aca474682f0fcfa4b6943212024-01-07T08:42:45ZengINFRA-MSolar-Terrestrial Physics2500-05352023-12-0194465410.12737/stp-94202306Correlation analysis of solar flux absolute measurements at 161 and 245 MHzSetov A. G.0Kushnarev D. S.1 Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, Russia Institute of Solar-Terrestrial Physics SB RAS, Irkutsk, RussiaSolar emission in meter waves originates from upper layers of the solar corona. We present absolute measurements of solar flux from Irkutsk Incoherent Scatter Radar (161 MHz frequency) and Learmonth Observatory (245 MHz frequency). We perform correlation analysis to investigate the relation between solar flux values at different frequencies. Background emission of the quiet Sun is within the expected limits. We examine the behavior of background and slowly-varying emission components during a solar cycle. By comparing the Pearson correlation coefficient with the Spearman rank correlation coefficient, we have found that the dependence of the meter flux on the F10.7 index is non-linear. The correlation between solar flux measurements at 161 and 245 MHz appeared to be lower than that with the F10.7 index. Analysis of daily correlation and autocorrelation shows a diurnal variation that introduces an error into the measurements.https://naukaru.ru/en/nauka/article/64828/viewsolar emissionabsolute measurementsirkutsk incoherent scatter radar (iisr)learmonth observatorymeter wavesbackground emissionslowly-varying component |
| spellingShingle | Setov A. G. Kushnarev D. S. Correlation analysis of solar flux absolute measurements at 161 and 245 MHz Solar-Terrestrial Physics solar emission absolute measurements irkutsk incoherent scatter radar (iisr) learmonth observatory meter waves background emission slowly-varying component |
| title | Correlation analysis of solar flux absolute measurements at 161 and 245 MHz |
| title_full | Correlation analysis of solar flux absolute measurements at 161 and 245 MHz |
| title_fullStr | Correlation analysis of solar flux absolute measurements at 161 and 245 MHz |
| title_full_unstemmed | Correlation analysis of solar flux absolute measurements at 161 and 245 MHz |
| title_short | Correlation analysis of solar flux absolute measurements at 161 and 245 MHz |
| title_sort | correlation analysis of solar flux absolute measurements at 161 and 245 mhz |
| topic | solar emission absolute measurements irkutsk incoherent scatter radar (iisr) learmonth observatory meter waves background emission slowly-varying component |
| url | https://naukaru.ru/en/nauka/article/64828/view |
| work_keys_str_mv | AT setovag correlationanalysisofsolarfluxabsolutemeasurementsat161and245mhz AT kushnarevds correlationanalysisofsolarfluxabsolutemeasurementsat161and245mhz |