Mapping of Geomagnetic Cutoff Rigidity of Cosmic Rays during the Main Phase of the Magnetic Storm of November 20, 2003

Данилова, О. А.; Demina, I. M.; Птицына, Н. Г.; Tyasto, M. I.

doi:10.1134/s0016793219020051

Cited by 12 publications

(3 citation statements)

References 29 publications

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“…Data for CLMX and THUL stations were collected from 1950 to 2006 and 1957 to 2020, respectively. Table 1 contains extensive data from three different sites where Rc is the cut-off rigidity, which is the lowest energy limit for cosmic rays that may reach Earth [14]. In the meantime, Table 2 displays data for the five parameters in the form of data sources and timeframes.…”

Section: Datamentioning

confidence: 99%

Correlation Cosmic Ray Intensity Based on Variation in Solar Activity and Interplanetary Plasma Parameters Using Principal Component Analysis (PCA)

Putri,

Herdiwijaya,

Hidayat

2024

J. Phys.: Conf. Ser.

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For a long time, scientists have been investigating the relationship between the strength of cosmic rays and the number of sunspots. Several studies have discovered an anti-correlation between cosmic ray power and the number of sunspots, with some differences in time lag between solar cycles. So far, the distinctions that have surfaced are a mystery. This effort will estimate solar activity and interplanetary space parameters such as the sunspot number, solar wind speed, Interplanetary Magnetic Field (IMF), Heliospheric Current Sheet (HCS) tilt, and halo CME speed. The data ranges from 1749 to 2022, with time resolutions ranging from daily to monthly. To study the association between cosmic ray intensity and these five qualities, the Principal Component Analysis (PCA) approach was utilized. According to the data, all measurements demonstrate an anti-correlation with the intensity of cosmic rays. They also contribute to the modification of cosmic rays.

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Section: Datamentioning

confidence: 99%

Correlation Cosmic Ray Intensity Based on Variation in Solar Activity and Interplanetary Plasma Parameters Using Principal Component Analysis (PCA)

Putri,

Herdiwijaya,

Hidayat

2024

J. Phys.: Conf. Ser.

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“…Usually, the method for backtracing particles is used and the situation for several positions on Earth, most typically neutron monitor positions is evaluated [1][2][3]. There is also research evaluating cut-off rigidities globally presented in [4] for one selected moment, where the changes in cut-off rigidities are evaluated from the difference of cut-off rigidities in combined internal and external geomagnetic fields and rigidities evaluated only in the internal geomagnetic field.…”

Section: Introductionmentioning

confidence: 99%

Where on the Earth's surface, are the biggest changes, in the cosmic ray intensity during geomagnetic storms?

Gecášek¹,

Mykhailenko²,

Bobík³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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The geographical distribution of cosmic ray intensity at the Earth's surface significantly changes, mostly with geomagnetic latitude. Moreover, the transparency of the magnetosphere changes temporally, with significant changes during geomagnetic storms. In this article, we address the question: Where on the Earth's surface are the biggest relative and absolute changes in cosmic ray intensity during geomagnetic storms? We simulate a global situation for a set of selected geomagnetic storms and discuss obtained results.

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“…Knowledge of distribution of CR cutoff rigidity variations ΔR during a magnetic storm is becoming increasingly important to monitor effects of bad space weather for space industry and high-latitude air transportation rapidly developing over the last 15 years [Iucci et al, 2005;Burov et al, 2005;Kress et al, 2015]. Longitude and latitude dependences of cutoff rigidity variations during quiet periods and during some magnetic storms have been analyzed in a number of papers [Dorman, 1963;Flueckiger et al, 1987;Antonova et al, 1990;Belov et al, 2005;Dvornikov et al, 2009;Danilova et al, 2019]. However, latitude dependences of the sensitivity of cutoff rigidities to different magnetospheric parameters have been beyond the scope of these studies.…”

Section: Introductionmentioning

confidence: 99%

Disturbed Magnetosphere on November 7–8, 2004and Variations of Cosmic Ray Cutoff Rigidity: Latitude Effects

Данилова¹,

Птицына²,

Tyasto³

et al. 2020

Solar-Terrestrial Physics

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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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Mapping of Geomagnetic Cutoff Rigidity of Cosmic Rays during the Main Phase of the Magnetic Storm of November 20, 2003

Cited by 12 publications

References 29 publications

Correlation Cosmic Ray Intensity Based on Variation in Solar Activity and Interplanetary Plasma Parameters Using Principal Component Analysis (PCA)

Correlation Cosmic Ray Intensity Based on Variation in Solar Activity and Interplanetary Plasma Parameters Using Principal Component Analysis (PCA)

Where on the Earth's surface, are the biggest changes, in the cosmic ray intensity during geomagnetic storms?

Disturbed Magnetosphere on November 7–8, 2004and Variations of Cosmic Ray Cutoff Rigidity: Latitude Effects

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