3-11 July 2007
Merida, Mexico
Mexico/General timezone
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Contribution Poster

Merida, Mexico - Regency (Hyatt)

The regular measurements of the GCR intensity in the stratosphere in comparison with the measurements by the neutron monitors and aboard the IMP8 spacecraft

Speakers

  • Dr. Mikhail KRAINEV

Primary authors

  • Dr. Mikhail KRAINEV (Lebedev Physical Institute, Russian academy of sciences, Moscow, Russia)

Co-authors

Abstract content

We estimate to what extent the neutron monitor and stratospheric GCR data can be used for getting information on the intensity of the GCRs in a so called medium energy range (100-500 MeV/n), very important for studying the heliosphere and the GCR modulation there. The hourly data of the neutron monitors Apatity (since 1969) and Moscow (since 1958) are used as well as the standard set of the quiet time daily medium energy GCR intensities (p, 121-229.5 MeV; He, 168.8-455.5 MeV/n) and the integral count rate for GCR nuclei with Т > 80 MeV/n, kindly put at our disposal by Drs. F. McDonald and B. Heikkila (GSFC, USA). As stratospheric data we use the daily and monthly count rates in the Pfoetzer maxima at the high (Murmansk; the geomagnetic cut-off rigidity Rc = 0.6 GV) and the middle (Moscow; Rc = 2.3 GV) latitudes and the difference between these two count rates. Special emphasis is placed upon the long-term trends in all time series studied.

Reference

Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 1 (SH), pages 469-472