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Transport Characteristics of a Hierarchical Near-Surface Layer of the Nucleus of Comet 67P/Churyumov-Gerasimenko
Blum, J.; Hartogh, P.; Rezac, L. +3 more
In this paper, we develop previous studies that considered a free molecular gas flow through a dust porous mantle of a cometary nucleus. Before, we considered various types of both homogeneous and heterogeneous layers built of nonintersecting spheres, including the layers containing microscopic cracks and inner cavities. At the same time, data fro…
Spectral Signs of Simultaneous Sublimation Activity and the Appearance of a Dust Exosphere on Eight Asteroids of the Main Belt Near Perihelion
Shcherbina, M. P.; Busarev, V. V.; Savelova, A. A. +1 more
In December 2020, at the 2-m telescope of the Terskol branch of the Institute of Astronomy, we carried out spectrophotometric observations in the range of ~0.36-0.95 µm of nine asteroids of the Main Belt (19 Fortuna, 52 Europa, 102 Miriam, 177 Irma, 203 Pompeja, 250 Bettina, 266 Aline, 379 Huenna, and 383 Janina), which were near perihelia o…
Simulation of Water Vapor Photodissociation during Dust Storm Season on Mars
Medvedev, A. S.; Rodin, A. V.; Shaposhnikov, D. S.
Within the framework of this work, using a three-dimensional numerical model of the general circulation of the Martian atmosphere MAOAM (Martian Atmosphere: Observation and Modeling), also known as MPI-MGCM (Max Planck Institute Martian General Circulation Model), we simulated the planet's hydrological cycle during the 28 and 34 Martian years (MY2…