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Solar Energetic Proton Fluxes in Near-Earth Space on March 13-23, 2023
Vlasova, N. A.; Bazilevskaya, G. A.; Ginzburg, E. A. +5 more
The results of studying the fluxes of solar protons with energies greater than 5 MeV in near-Earth space on March 13-23, 2023, are presented. The features of the period under study are no visible solar flare with which the beginning of the event could be associated and an untypical time profile of proton fluxes, as well as a long duration of the e…
Earth's Ionospheric Response to Solar Activity Phenomena in February-March 2023
Sheiner, O. A.; Vybornov, F. I.
As a result of the analysis of data from vertical and oblique sounding of the ionosphere in February-March 2023 using the new ionospheric index, it was found that solar coronal mass ejections (CMEs) of the loop type lead to a long-term decrease in the critical frequencies F-layer of the ionosphere, while other types of CMEs may not lead to signifi…
New 1.38-µm Water Vapor Band Spectroscopy for a CO2 Atmosphere: H2O Measurements in the Martian Atmosphere in the SPICAM/MEX and ACS NIR/TGO Experiments
Montmessin, F.; Fedorova, A. A.; Korablev, O. I. +5 more
The H2O 1.38-µm band has been used to measure water vapor in the Martian atmosphere since the MAWD (Mars Atmospheric Water Detector) experiment on Viking-1 and -2. Currently, two experiments in orbit around Mars—SPICAM IR (SPectroscopy for the Investigation of the Characteristics of the Atmosphere of Mars InfraRed) on Mars Express and A…
Geomagnetic Pulsations in the 1-4 mHz Frequency Range (Pc5/Pi3) in the Magnetotail. Internal and Extramagnetospheric Sources
Yagova, N. V.; Evsina, N. S.
Spectral and spatial parameters of nonstorm Pc5/Pi3 geomagnetic pulsations in the geomagnetic tail are studied based on magnetic measurements on Cluster satellites under different conditions in the interplanetary medium. Both the average values of the magnetic field components in front of the bow shock and fluctuations in the pulsations' frequency…