scholarly journals Indicators of Space Weather Events in Cosmic Rays Flux During the Solar Cycle 24

2019 ◽  
Author(s):  
Agnieszka Gil ◽  
Renata Modzelewska ◽  
Szczepan Moskwa ◽  
Agnieszka Siluszyk ◽  
Marek Siluszyk ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Cosmic Rays ◽  
Space Weather ◽  
Weather Events ◽  
Solar Cycle 24 ◽  
Cycle 24

scholarly journals Geoeffective space weather events signatures in cosmic rays during the ascending phase of the solar cycle 24

2021 ◽  
Author(s):  
Agnieszka Gil ◽  
Monika Berendt-Marchel ◽  
Renata Modzelewska ◽  
Szczepan Moskwa ◽  
Agnieszka Siluszyk ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Cosmic Rays ◽  
Space Weather ◽  
Weather Events ◽  
Solar Cycle 24 ◽  
Cycle 24

Solar rotational period of cosmic rays and solar activity during the maximum phase of solar cycle 24

2021 ◽  
Author(s):  
Prithvi Raj Singh ◽  
A. I. Saad Farid ◽  
Y. P. Singh ◽  
A. K. Singh ◽  
Ayman A. Aly
Keyword(s):  
Solar Activity ◽  
Solar Cycle ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
R Package ◽  
Least Square ◽  
Maximum Phase ◽  
Cosmic Ray Intensity ◽  
Solar Cycle 24 ◽  
Cycle 24

Abstract To study the solar rotational oscillation on daily averaged time series of solar activity proxies: sunspot number (SSN), modified coronal index (MCI), solar flare index (FI), and cosmic ray intensity (CRI) are subjected to Lomb/Scargle periodogram, and continuous wavelet transform. For this purpose, we have used data of all the considered parameters from 2012 to 2015, which covers the maximum phase including the polarity reversal period of the solar cycle 24. Both spectral analysis techniques are carried out to study the behavior of 27-days on the time scale of the synodic period and to follow their evolution throughout the epoch. Further, we have used R package RobPer (least square regression) techniques and obtained a significant true period ~27 days is present in this study. It is noted that the ~27-day period of solar activity parameters and cosmic rays is much prominent during the examined period.

scholarly journals Solar Variation and Super Geomagnetic Storm Event during March 10-31, 2015

2019 ◽  
Vol 9 (1) ◽  
pp. 2469-2472
Keyword(s):  
Magnetic Field ◽  
Solar Cycle ◽  
Geomagnetic Storm ◽  
Space Weather ◽  
Solar Flares ◽  
Storm Event ◽  
Earth Magnetic Field ◽  
Solar Cycle 24 ◽  
Cycle 24

CMEs and solar flares are important solar ejections which are the cause of storm in Heliosphere. These ejections are producing a change in Earth magnetic field. In this paper we have studied heliospheric disturbance of solar cycle 24 during period from 10 March to 31 March 2015. We observed that a huge explosion of magnetic field and plasma from the Sun’s corona on 15 March 2015 and associated solar flares have disturbed space weather towards earth causes strongest geomagnetic storm on 17 March 2015. We found that Dst value reached to its minimum is -223 nT and a FDs during the period on 17 March 2015.

scholarly journals GLOBAL DISTURBANCE OF EARTH’S MAGNETOSPHERE AND ITS CONNECTION WITH SPACE WEATHER

2020 ◽  
Vol 6 (1) ◽  
pp. 51-62
Author(s):  
Nadezhda Kurazhkovskaya
Keyword(s):  
Solar Wind ◽  
Solar Cycle ◽  
Space Weather ◽  
Interplanetary Medium ◽  
Dynamic Pressure ◽  
Annual Number ◽  
Solar Cycles ◽  
Winter Solstice ◽  
Solar Cycle 24 ◽  
Cycle 24

This paper deals with extreme conditions of the global magnetosphere disturbance: very quiet and greatly disturbed, and their relationship with interplanetary medium parameters. The degree of global magnetosphere disturbance was estimated from the monthly and annual number of magnetically quiet and magnetically disturbed days. The cyclic and seasonal distributions of magnetically quiet and disturbed days were compared, and their relationship with interplanetary medium parameters in solar cycles 20–24 was analyzed. Magnetically quiet days are shown to be mainly observed at the ascending phase of solar activity and during the winter solstice season. Magnetically disturbed days dominate at the descending phase of the solar cycle and during the equinox season. An anomalously large increase in the number of quiet days was found in solar cycle 24 as compared to previous cycles. It has been established that the cyclic variation in the annual number of quiet and disturbed days is determined by the behavior and magnitude of the speed, temperature, dynamic pressure of solar wind plasma and the interplanetary magnetic field modulus. The detected burst in the number of quiet days during the ascending phase of solar cycle 24 is assumed to reflect internal processes on the Sun and related changes in interplanetary medium parameters. The patterns of cyclical and seasonal variation in the number of magnetically quiet and disturbed days and their relationship with the solar wind parameters can be used to predict space weather.

Spectra and Anisotropy of Cosmic Rays During the First GLE Event of Solar Cycle 24

2018 ◽  
Vol 81 (6) ◽  
pp. 771-775
Author(s):  
M. V. Kravtsova ◽  
V. E. Sdobnov
Keyword(s):  
Solar Cycle ◽  
Cosmic Rays ◽  
Solar Cycle 24 ◽  
Cycle 24

scholarly journals Anomalous expansion of coronal mass ejections during solar cycle 24 and its space weather implications

2014 ◽  
Vol 41 (8) ◽  
pp. 2673-2680 ◽  
Author(s):  
Nat Gopalswamy ◽  
Sachiko Akiyama ◽  
Seiji Yashiro ◽  
Hong Xie ◽  
Pertti Mäkelä ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Space Weather ◽  
Coronal Mass Ejections ◽  
Solar Cycle 24 ◽  
Cycle 24 ◽  
Anomalous Expansion
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