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Cosmic ray geomagnetic cutoff rigidities in the magnetic field of two empirical models during a strong disturbance in November 2003: A comparison of models

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Abstract

Cosmic ray (CR) fluxes, which penetrate into the Earth’s magnetosphere and atmosphere from the interplanetary space, are an important factor of space weather. The geomagnetic field allows or forbids CR particles to enter into a given point in the magnetosphere depending on their energy. The geomagnetic cutoff rigidity regulates the distribution of CR fluxes in the magnetosphere. The geomagnetic cutoff rigidity (geomagnetic threshold) determination accuracy is closely related to the accuracy of the magnetospheric model used in calculations. Using a method for tracing of charged CR particle trajectories in the magnetic field of a model magnetosphere, we obtained geomagnetic thresholds for two magnetosphere empirical models (Ts01 and Ts04), constructed based on the same initial database. The Ts01 model describes the middle magnetosphere for certain conditions in the solar wind and interplanetary field. The Ts04 model pays the main attention to describing the large-scale evolution of magnetospheric currents during a storm. The theoretically obtained geomagnetic thresholds have been compared with experimental thresholds, calculated using the spectrographic global survey method based on data from the global network of CR stations. The study has been performed for the period of a strong geomagnetic storm that occurred in November 2003.

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References

  • Dorman, L.I., Gushchina, R.G., Smart, D.F., and Shea, M.A., Effective Cut-Off Rigidities of Cosmic Rays, Moscow: Nauka, 1972.

    Google Scholar 

  • Dvornikov, V.M. and Sdobnov, V.E., Modification of the Spectrographic Global Survey Method for Studying the Variations in the Planetary System of Geomagnetic Cutoff Rigidities, Izv. Akad. Nauk SSR, Ser. Fiz., 1991, vol. 55, no. 10, pp. 1988–1991.

    Google Scholar 

  • Dvornikov, V.M. and Sdobnov, V.E., Variations in the Rigidity Spectrum and Anisotropy of Cosmic Rays at the Period of Forbush Effect on 12–25 July, Int. J. Geomagn. Aeron., 2002, vol. 3, no. 3, pp. 217–227.

    Google Scholar 

  • Dvornikov, V.M., Sdobnov, V.E., and Sergeev, A.V., Spectrographic Global Survey Method for Studying the Variations in the Intensity of Interplanetary and Magnetospheric Cosmic Rays, in Variatsii kosmicheskikh luchei i issledovaniya kosmosa (Cosmic Ray Variations and Space Studies), Moscow: IZMIRAN, 1986, pp. 232–237.

    Google Scholar 

  • McCracken, K.G., Rao, U.R., and Shea, M.A., The Trajectories of Cosmic Rays in a High Degree Simulation of the Geomagnetic Field, Cambridge: Lab. Nucl. Sci., 1962.

    Google Scholar 

  • Shea, M.A., Smart, D.F., and McCracken, K.G., A Study of Vertical Cutoff Rigidities Using Sixth Degree Simulations of the Geomagnetic Field, J. Geophys. Res., 1965, vol. 70, no. 17, pp. 4117–4130.

    Article  Google Scholar 

  • Smart, D.F., Shea, M.A., and Fluckiger, E., Magnetospheric Models and Trajectory Computations, Space Sci. Rev., 2000, vol. 93, no. 1–2, pp. 305–333.

    Article  Google Scholar 

  • Tsyganenko, N.A., A Model of the Near Magnetosphere with a Dawn-Dusk Asymmetry: 1. Mathematical Structure, J. Geophys. Res., 2002a, vol. 107A, p. 1179; doi:10.1029/2001JA000219.

    Article  Google Scholar 

  • Tsyganenko, N.A., A Model of the Near Magnetosphere with a Dawn-Dusk Asymmetry: 2. Parametrization and Fitting to Observation, J. Geophys. Res., 2002b, vol. 107A, p. 1176; doi:10.1029/2001JA000220.

    Article  Google Scholar 

  • Tsyganenko, N.A. and Sitnov, M.I., 2005. Modeling the Dynamics of the Inner Magnetosphere during Strong Geomagnetic Storms, J. Geophys. Res., 2005, vol. 110, p. A03208; doi:10.1029/2004JA010798.

    Article  Google Scholar 

  • Tsyganenko, N.A., Singer, H.J., and Kasper, J.C., Storm-Time Distortion of the Inner Magnetosphere: How Severe Can It Get?, J. Geophys. Res., 2003, vol. 108A, p. 1209; doi:10.1029/2002JA009808.

    Article  Google Scholar 

  • Tyasto, M.I., Danilova, O.A., Dorman, L.I., Dvornikov, V.M., and Sdobnov, V.E., On the Possibility to Check the Magnetosphere Model by CR: The Strong Geomagnetic Storm in November 2003, Adv. Space Res., 2008, vol. 42, no. 9, pp. 1556–1563.

    Article  Google Scholar 

  • Tyasto, M.I., Danilova, O.A., Dvornikov, V.M., and Sdobnov, V.E., Reflection of the Solar Wind Parameters in the CR Geomagnetic Cutoff Rigidity before a Strong Magnetic Storm in November 2003, Geomagn. Aeron., 2008, vol. 48, no. 6, pp. 723–740 [Geomagn. Aeron. (Engl. transl.), 2008, vol. 48, pp. 691–709].

    Article  Google Scholar 

  • Yermolaev, Yu.I., Zelenyi, L.M., Zastenker, G.N., et al., Solar and Heliospheric Disturbances That Resulted in the Strongest Magnetic Storm of November 20, 2003, Geomagn. Aeron., 2005, vol. 45, no. 1, pp. 23–50 [Geomagn. Aeron. (Engl. transl.), 2005, vol. 45, pp. 20–46].

    Google Scholar 

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Authors and Affiliations

  1. Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation, St. Petersburg Branch, Russian Academy of Sciences, Muchnoi per. 2, St. Petersburg, 191023, Russia

    M. I. Tyasto & O. A. Danilova

  2. Institute of Solar-Terrestrial Physics, Siberian Branch, Russian Academy of Sciences, P.O. Box 4026 (291), Irkutsk, 664033, Russia

    V. E. Sdobnov

Authors
  1. M. I. Tyasto
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  2. O. A. Danilova
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  3. V. E. Sdobnov
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Correspondence to M. I. Tyasto.

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Tyasto, M.I., Danilova, O.A. & Sdobnov, V.E. Cosmic ray geomagnetic cutoff rigidities in the magnetic field of two empirical models during a strong disturbance in November 2003: A comparison of models. Geomagn. Aeron. 52, 1087–1096 (2012). https://doi.org/10.1134/S0016793212080208

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  • DOI: https://doi.org/10.1134/S0016793212080208

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