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Statistical analysis of thunderstorm triggered enhancements in cosmic ray data

Statistical analysis of thunderstorm triggered enhancements in cosmic ray data. Armen Hovhannisyan. Types of Registered Events. Events with 1 peak. 18 such events have been found. Events with 2 and more peaks (not lasting more that 30 minutes). 47 such events were found.

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Statistical analysis of thunderstorm triggered enhancements in cosmic ray data

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  1. Statistical analysis of thunderstorm triggered enhancements in cosmic ray data Armen Hovhannisyan

  2. Types of Registered Events • Events with 1 peak. 18 such events have been found. • Events with 2 and more peaks (not lasting more that 30 minutes). 47 such events were found. • Events with multiple peaks and extra long duration (greater than 50 minutes). 7 such events were found.

  3. Events with 1 peak

  4. Events with 2 and more peaks

  5. Event with multiple peaks and extra long duration

  6. Events with deep before or after peak

  7. Monthly Distribution of events

  8. Hourly Distribution of events

  9. Aragats Solar Neutron Telescope(ASNT)

  10. Distribution of Duration of Events

  11. Distribution of Maximal Deviations of Events detected by ASNT Coincidence 10

  12. Distribution of Maximal Deviations of Events detected by ASNT Coincidence 01

  13. Distribution of Maximal Deviations of Events detected by ASNT 11 Coincidence

  14. September 19 Event by Aragats Neutron Monitor(18NM64)

  15. Distribution of Maximal Deviations of Events detected Aragats Neutron Monitor

  16. Scatter Plot of Maximal Deviations of ArNM and SNT 01

  17. AMMM and MAKET Detectors

  18. Distribution Difference of Maximal Deviations of Events detected by AMMM and Outdoor MAKET. During 21 events from 27 both detectors registered peaks >3σ

  19. Distribution of Maximal Deviations of Events detected by Indoor and Outdoor Channels of MAKET (totally 29 events)

  20. Conclusions • Statistical analysis of the RREA events prove the correlation of the detected enhancements with Thunderstorm activity at Aragats both with month (yearly) and hour (daily) distributions. Four types of events were outlined and described: having one peak, several peaks, extremely long duration and accompanied with mean count rate depression before and/or peak. • We relate differences with lightning activity and with behavior of electrical field in the thunderstorm clouds. • Distributions of duration and peak heights of events registered by ASEC detectors helps to understand the interconnections between electron and gamma ray components of the RREA, as well as to see connections between gamma and neutron production. • Histograms of the difference of outdoor detectors located at maximal distance of 400 m and demonstrated similar enhancements proof the rather large size of the RREA process. Obtained difference of the indoor and outdoor detectors helps to obtain the energy spectra of the RREA electrons.

  21. http://crd.yerphi.am/Library_of_Thunderstorm _Events/

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