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Photometric, astrometric, and kinematical characteristics of two Xuyi's open clusters utilizing Gaia DR3 data
Belwal, Kuldeep; Bisht, D.; Bisht, Mohit Singh +6 more
This study reports and examines two poorly studied open star clusters surveyed from XSTPS-GAC, namely Xuyi 15 and Xuyi 23, using the Gaia DR3 catalog data. We identified 570 (Xuyi 15) and 824 (Xuyi 23) stars as highly probable astrometric members with membership probability higher than 60
Mars Express investigations of the Martian ionosphere using ASPERA-3 and new MARSIS fixed frequency modes
Barabash, Stas; Holmstrom, Mats; Sánchez-Cano, Beatriz +7 more
The plasma package Analyzer of Space Plasma and Energetic Atoms (ASPERA-3) onboard Mars Express has observed ions and electrons accelerated by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) radar when it operates in its active ionospheric sounding mode. To better study the processes involved, new operational modes for MARS…
Temporal and spatial variation in subsurface cryosphere in East Coprates Planum, Mars
Dasgupta, Dipayan
There is general acceptance among researchers regarding the presence of a cryosphere in the subsurface of Mars. The two main geomorphic indications assumed to support the existence of this cryospheric layer are layered ejecta rampart craters and outflow channels. In essence, a layered ejecta rampart crater is a crater with an ejecta blanket having…
Large solar energetic particles and solar radio emissions during Cycle 25. A comparative analysis of trends and characteristics with cycles 23 and 24
Ndacyayisenga, Theogene; Uwamahoro, Jean; Uwamahoro, Jean Claude +2 more
Solar energetic particles (SEPs) affect space weather in both the heliosphere and on Earth. The present study investigates the occurrences of large SEP events focusing on their influence on the Earth, as well as their correlation with solar radio bursts (SRBs). The velocity dispersion analysis (VDA) is used to calculate the release times of large …
Analysis and interpretation of the in-flight dynamics of a critical space mechanism
Dalla Ricca, Edoardo; Bortoluzzi, Daniele; Vignotto, Davide
The study hereby presented develops a mechatronic model of a critical space mechanism for a comprehensive interpretation of its in-flight performance. The mechanism was operated in the LISA Pathfinder European Space Agency mission, which was flown to test key technologies developed for detecting gravitational waves from space. The mission accompli…