Results 81 to 90 of about 5,871 (213)
The intensity recovery of Forbush-type decreases as a function of heliocentric distance and its relationship to the 11-year variation [PDF]
Recent data indicating that the solar modulation effects are propagated outward in the heliospheric cavity suggest that the 11-year cosmic ray modulation can best be described by a dynamic time dependent model.
Jokipii, J. R. +2 more
core +1 more source
Cumulative effect of Forbush decreases in the heliospheric modulation during the present solar cycle [PDF]
A monthly Forbush decrease index (Fd-I) is generated and it is compared with the observed long term chnges in the cosmic ray intensity near earth at energies greater than or equal to 1 Gev over 1976-83. Significant correlation is observed between the two
Agrawal, S. P. +2 more
core +1 more source
Measurement of muon flux variations with scintillators in Mexico City and their correlation to solar activity [PDF]
EPJ Web of ConferencesIn this work we report the variations of the atmospheric muons flux in Mexico City. The measurements were performed from September to December 2023 at the Institute of Nuclear Sciences of UNAM, located at coordinates 19.32°N 99.18°W with an altitude of ...
Montiel Diego Martínez +5 more
doaj +1 more source
The effect of the solar field reversal on the modulation of galactic cosmic rays [PDF]
, 1983 There is now a growing awareness that solar cycle related changes in the large-scale structure of the interplanetary magnetic field (IMF) may play an important role in the modulation of galactic cosmic rays.
Goldstein, B. E., Thomas, B. T.
core +1 more source
MHD waves at the pre-front of interplanetary shocks on September 6 and 7, 2017
Solar-Terrestrial PhysicsWe analyze strong space weather disturbances during first ten days of September 2017, using the geomagnetic Dst index, parameters of normals to interplanetary shock fronts, direct measurements of interplanetary magnetic field, solar wind, and cosmic ray ...
Starodubtsev S. A., Shadrina L. P.
doaj +1 more source
The influences of the galactic cosmic ray on the atmospheric ozone [PDF]
The relationship between the yearly variations of cosmic ray intensity and ozone in the atmosphere, and the ozone disturbance initiated by the Forbush decrease of 1965-1976 is analyzed.
Wang, L., Xue, S., Ye, Z.
core +1 more source
, 2019 The Radiation Assessment Detector (RAD) instrument onboard the Mars Science Laboratory (MSL) mission's Curiosity rover has been measuring galactic cosmic rays (GCR) as well as solar energetic particles (SEP) on the surface of Mars for more than 6 years ...
Dumbović, Mateja +9 more
core +1 more source
Space WeatherDuring Forbush decreases (FDs), the fluxes of high‐energy galactic cosmic rays (GCRs) are suppressed. As a consequence, the ionization profile of the atmosphere is affected and the global electric circuit system is perturbed.
G. Li +5 more
doaj +1 more source
UniverseDuring a period of intense solar activity and highly disturbed geomagnetic conditions, a large Forbush decrease began on 10 May 2024 accompanied by a historic geomagnetic storm that lasted for four days. This extreme geomagnetic disturbance classified as
Maria Gerontidou +5 more
doaj +1 more source
Astroparticles in Latin America: current status and outlook
, 2014 The successful installation and operation of the Pierre Auger Observatory in Argentina has been a milestone in Astroparticle research in Latin America, generating new regional research opportunities in the field.
Sidelnik, Iván
core +1 more source