Relevant bibliographies by topics / Cutoff rigidity

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Conference papers
  5. Reports

Academic literature on the topic 'Cutoff rigidity'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Cutoff rigidity"

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Danilova, Olga, Natalia Ptitsyna, Marta Tyasto, and Valeriy Sdobnov. "DISTURBED MAGNETOSPHERE ON NOVEMBER 7–8, 2004AND VARIATIONS OF COSMIC RAY CUTOFF RIGIDITY: LATITUDE EFFECTS." Solar-Terrestrial Physics 6, no. 3 (September 22, 2020): 34–39. http://dx.doi.org/10.12737/stp-63202005.

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We have studied the latitude behavior of cosmic ray cutoff rigidity and their sensitivity to Bz and By components of the interplanetary magnetic field and geomagnetic activity indices Dst and Kp for different phases of the November 7–8, 2004 strong magnetic storm. Cutoff rigidities have been calculated using two methods: the spectrographic global survey method in which the cutoff rigidity is determined from observational data, acquired by the neutron monitor network, and the method in which particle trajectories are calculated numerically in a model magnetic field of the magnetosphere. We have found that the sensitivity of observed cutoff rigidities to Dst changes with latitude (threshold rigidity of stations) is in antiphase with changes in the sensitivity to By. During the recovery phase of the storm, the Dst correlation with By is significantly greater than that with Bz, and the Kp correlation with Bz is greater than that with By. The By component is shown to be a predominant driver of the current systems that determine the Dst evolution during the recovery phase.
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Herbst, K., A. Kopp, and B. Heber. "Influence of the terrestrial magnetic field geometry on the cutoff rigidity of cosmic ray particles." Annales Geophysicae 31, no. 10 (October 2, 2013): 1637–43. http://dx.doi.org/10.5194/angeo-31-1637-2013.

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Abstract. Studies of the propagation of charged energetic particles in the Earth's magnetic field go back to Carl Størmer. In the end, his investigations finally lead to the definition of the so-called cutoff rigidity RC; that is, the minimum momentum per charge a particle must have in order to reach a certain geographical location. Employing Monte Carlo simulations with the PLANETOCOSMICS code we investigate the correlation between the geomagnetic field structure and the cutoff rigidity. We show that the geometry of the magnetic field has a considerable influence on the resulting cutoff rigidity distribution. Furthermore, we will present a simple geometry-based parameter, δB, which is able to reflect the location-dependent cutoff rigidity. We show that this correlation is also visible in the temporal evolution of the Earth's magnetic field, at least over the last 100 yr. Using latitude scans with neutron monitors, changes of the relative counting rates at different positions are calculated, showing small variations for, e.g., Kiel and Moscow, while large ones occur at Mexico City as well as on the British Virgin Islands.
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Agarwal, Rekha, and Rajesh K. Mishra. "Modulation of cosmic rays at different cutoff rigidity." Brazilian Journal of Physics 38, no. 1 (March 2008): 108–16. http://dx.doi.org/10.1590/s0103-97332008000100021.

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Danilova, Olga, Natalia Ptitsyna, Marta Tyasto, and Valeriy Sdobnov. "DISTURBED MAGNETOSPHERE ON NOVEMBER 7–8, 2004AND VARIATIONS OF COSMIC RAY CUTOFF RIGIDITY: LATITUDE EFFECTS." Solnechno-Zemnaya Fizika 6, no. 3 (September 22, 2020): 40–47. http://dx.doi.org/10.12737/szf-63202005.

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We have studied the latitude behavior of cosmic ray cutoff rigidity and their sensitivity to Bz and By components of the interplanetary magnetic field and geomagnetic activity indices Dst and Kp for different phases of the November 7–8, 2004 strong magnetic storm. Cutoff rigidities have been calculated using two methods: the spectrographic global survey method in which the cutoff rigidity is determined from observational data, acquired by the neutron monitor network, and the method in which particle trajectories are calculated numerically in a model magnetic field of the magnetosphere. We have found that the sensitivity of observed cutoff rigidities to Dst changes with latitude (threshold rigidity of stations) is in antiphase with changes in the sensitivity to By. During the recovery phase of the storm, the Dst correlation with By is significantly greater than that with Bz, and the Kp correlation with Bz is greater than that with By. The By component is shown to be a predominant driver of the current systems that determine the Dst evolution during the recovery phase.
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Clilverd, Mark A., Craig J. Rodger, Tracy Moffat-Griffin, and Pekka T. Verronen. "Improved dynamic geomagnetic rigidity cutoff modeling: Testing predictive accuracy." Journal of Geophysical Research: Space Physics 112, A8 (August 2007): n/a. http://dx.doi.org/10.1029/2007ja012410.

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Smart, D. F., and M. A. Shea. "Fifty years of progress in geomagnetic cutoff rigidity determinations." Advances in Space Research 44, no. 10 (November 2009): 1107–23. http://dx.doi.org/10.1016/j.asr.2009.07.005.

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Кичигин, Геннадий, Gennadiy Kichigin, Марина Кравцова, Marina Kravtsova, Валерий Сдобнов, and Valeriy Sdobnov. "Parameters of current systems in the magnetosphere as derived from observations of cosmic rays during the June 2015 magnetic storm." Solar-Terrestrial Physics 3, no. 3 (October 9, 2017): 13–17. http://dx.doi.org/10.12737/stp-33201702.

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Basing on measurements of cosmic rays at the worldwide network of stations, we calculate variations in the planetary system of geomagnetic cutoff rigidity for the 2015 June moderate geomagnetic storm. Using the axisymmetric model of the limited magnetosphere taking into account magnetopause currents and the ring current, we determine the distance to the subsolar point and the ring current radius, as well as the contribution of the ring current to variations in the geomagnetic cutoff rigidity and to the Dst index.
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Кичигин, Геннадий, Gennadiy Kichigin, Марина Кравцова, Marina Kravtsova, Валерий Сдобнов, and Valeriy Sdobnov. "Parameters of current systems in the magnetosphere as derived from observations of cosmic rays during the June 2015 magnetic storm." Solnechno-Zemnaya Fizika 3, no. 3 (September 29, 2017): 15–19. http://dx.doi.org/10.12737/szf-33201702.

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Basing on measurements of cosmic rays at the worldwide network of stations, we calculate variations in the planetary system of geomagnetic cutoff rigidity for the 2015 June moderate geomagnetic storm. Using the axisymmetric model of the limited magnetosphere taking into account magnetopause currents and the ring current, we determine the distance to the subsolar point and the ring current radius, as well as the contribution of the ring current to variations in the geomagnetic cutoff rigidity and to the Dst index.
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Tyasto, M. I., O. A. Danilova, V. M. Dvornikov, and V. E. Sdobnov. "Strong cosmic ray cutoff rigidity decreases during great magnetospheric disturbances." Bulletin of the Russian Academy of Sciences: Physics 73, no. 3 (March 2009): 367–69. http://dx.doi.org/10.3103/s1062873809030265.

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Тясто, Марта, Marta Tyasto, Ольга Данилова, Olga Danilova, Наталия Птицына, Natalia Ptitsyna, Валерий Сдобнов, and Valeriy Sdobnov. "Variations in cosmic ray cutoff rigidities during the greatgeomagnetic storm of November 2004." Solnechno-Zemnaya Fizika 1, no. 2 (June 17, 2015): 97–105. http://dx.doi.org/10.12737/7890.

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Very strong interplanetary and magnetospheric disturbance observed on 7–13 November 2004 can be regarded as one of the strongest events during the entire period of space observations. In this paper, we report on the studies of cosmic ray cutoff rigidity variations during 7–13 November 2004 showing how storm conditions can affect the direct cosmic ray access to the inner magnetosphere. Effective cutoff rigidities have been calculated for selected points on the ground by tracing trajectories of cosmic ray particles through the magnetospheric magnetic field of the “storm-oriented” Tsyganenko 2003 model [Tsyganenko, 2002a, b; Tsyganenko et al., 2003]. Cutoff rigidity variations have also been determined by the spectrographic global survey method on the basis of experimental data of the neutron monitor network. Correlations between the calculated and experimental cutoff rigidities, as well as between geomagnetic Dst index and interplanetary parameters have been investigated. Correlation coefficients between the cutoff rigidities obtained by the trajectory tracing method and the spectrographic global survey method have been found to be in the limits of 0.76–0.89 for all stations except the low-latitude station Tokyo (0.35). The most pronounced correlation has been revealed between the cutoff rigidities that exhibited a very large variation of 1–1.5 GV during the magnetic storm, and the Dst index.
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Dissertations / Theses on the topic "Cutoff rigidity"

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Krüger, Helena. "A calibration neutron monitor for long-term cosmic ray modulation studies / H. Krüger." Thesis, North-West University, 2006. http://hdl.handle.net/10394/1023.

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The propagation of high-energy cosmic rays is influenced by the time-varying heliospheric magnetic field embedded in the solar wind, and by the geomagnetic field. To penetrate through this geomagnetic field, they must have a rigidity that exceeds the geomagnetic cutoff rigidity for a given position on the earth. In the atmosphere, the primary cosmic rays interact with atmospheric nuclei, to form a cascade of secondary particles. Neutron monitors record these secondary cosmic rays, mainly the neutrons, with energies about a decade higher than detected by most spacecraft. Since neutron monitors are integral detectors, each with its own detection efficiency, energy spectra cannot readily be derived from their observations. One way to circumvent this is by conducting latitudinal surveys with mobile neutron monitors. Another way is to use the worldwide stationary neutron monitor network, but then the counting rates of these monitors must be normalised sufficiently accurate against one another. For this reason two portable calibration neutron monitors were built at the Potchefstroom campus of the North-West University and completed in 2002. To achieve sufficient calibration accuracy, several properties of the calibrator are investigated in this work. Effects such as atmospheric pressure variations, diurnal variations, short-term scintillations, and multiplicity, contribute to the fluctuations of the counting rate of a neutron monitor. Due to these effects, the coefficient of variation of the calibrator is determined to be -40% larger than the Poisson deviation. The energy response of the calibrator over the cutoff rigidity interval from the poles to the equator is investigated, with the result that it is almost 4% larger than that of a standard 3NM64 neutron monitor. It is also determined that not only the calibrator, but also the stationary NM64 and IGY neutron monitors, have fairly large instrumental temperature sensitivity, which must be accounted for in calibration procedures. Furthermore, the calibrator has a large sensitivity to the type of surface beneath it, influencing its counting rate by as much as 5%. This investigation is incomplete and requires further experimentation before the calibration of the stationary neutron monitors can start. When calibrations of a significant number of the worldwide neutron monitors are done, their intensity spectra as derived from differential response functions, will provide experimental data for modulation studies at rigidities above 1 GV.
Thesis (Ph.D. (Physics))--North-West University, Potchefstroom Campus, 2006.
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Books on the topic "Cutoff rigidity"

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Boundary value problem for the solution of magnetic cutoff rigidities and some special applications. Pasadena, Calif: National Aeronautics and Space Administration, Jet Propulsion Laboratory, California Institute of Technology, 1987.

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Conference papers on the topic "Cutoff rigidity"

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Hariharan, Balakrishnan. "CORSIKA modification for rigidity dependent primary selection based on Geomagnetic cutoff rigidity for GRAPES-3 simulations." In The 34th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.236.0448.

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von Doetinchem, Philip, and Bryan Yamashiro. "Geomagnetic Cutoff Calculations for the Interpretation of Low-rigidity Cosmic-ray Antiparticle Measurements." In 35th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.301.0151.

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Zang, Jingjing, Chuan Yue, and Xiang Li. "Measurement of absolute energy scale of ECAL of DAMPE with geomagnetic rigidity cutoff." In 35th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.301.0197.

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Mangeard, Pierre-Simon, John Clem, Paul Evenson, Roger Pyle, Warit Mitthumsiri, David Ruffolo, Alejandro Sáiz, and Tanin Nutaro. "Cosmic Ray Modulation Observed by the Princess Sirindhorn Neutron Monitor at High Rigidity Cutoff." In 35th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.301.0036.

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Maghrabi, Abdullrahman, Abdulah Aldosari, Mohammed Almutairi, Mohammed Altilasi, Abdulah Alshehri, Randa Alfadhel, Byan Almshari, Jawaher Alrashied, Ebtihal Almutairi, and Bashayer Alrashide. "Temperature Effects on Cosmic Ray muons Observed by Multiwire Detector at High Cutoff Rigidity Station." In 36th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2019. http://dx.doi.org/10.22323/1.358.1114.

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Ruffolo, David, Chanoknan Banglieng, Alejandro Sáiz, Paul Evenson, and Tanin Nutaro. "Tracking cosmic-ray spectral variations with neutron monitor time-delay measurements at high cutoff rigidity during 2007-2017." In 35th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.301.0025.

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Mangeard, Pierre-Simon, David Ruffolo, A. Saiz, Suttiwat Madlee, and Tanin Nutaro. "Observations and Monte Carlo Simulation of the Princess Sirindhorn Neutron Monitor at a Vertical Rigidity Cutoff of 16.8 GV." In The 34th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.236.0079.

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Ptitsyna, N. G., O. A. Danilova, and M. I. Tyasto. "INFLUENCE OF THE HELIOSPHERIC PARAMETERS ON THE GEOMAGNETIC CUTOFF RIGIDITY OF COSMIC RAYS DURING VARIOUS PHASES OF A MAGNETIC STORM." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2019. http://dx.doi.org/10.31725/0552-5829-2019-329-332.

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Maghrabi, Abdullrahman. "Study of the Forbush Decrease Event of October- November 2003 observed with High Cutoff Rigidity Muon Detector at Riydah, Sau." In The 34th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.236.0039.

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Banglieng, Chanoknan. "Neutron Monitor Time-delay Measurements to Track Cosmic Ray Spectral Variation Due to Solar Modulation at High and Low Cutoff Rigidity." In 36th International Cosmic Ray Conference. Trieste, Italy: Sissa Medialab, 2019. http://dx.doi.org/10.22323/1.358.1055.

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Reports on the topic "Cutoff rigidity"

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Smart, D. F., M. A. Shea, M. J. Golightly, M. Weyland, and A. S. Johnson. Evaluation of the Dynamic Cutoff Rigidity Model Using Dosimetry Data From the STS-28 Flight. Fort Belvoir, VA: Defense Technical Information Center, January 2003. http://dx.doi.org/10.21236/ada423844.

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Smart, D. F., and M. A. Shea. The Space-Developed Dynamic Vertical Cutoff Rigidity Model and its Applicability to Aircraft Radiation Dose. Fort Belvoir, VA: Defense Technical Information Center, February 2003. http://dx.doi.org/10.21236/ada423850.

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