Search Publications
Lithological mapping of Eratosthenes crater region using Moon Mineralogy Mapper of Chandrayaan-1
Kumaresan, P. R.; Saravanavel, J.; Palanivel, K.
Selenological exploration (lunar geology) involves mapping and delineation of different rock types and minerals present in the Moon. Various lunar missions with multi-spectral sensors provided preliminary information about the lithological and mineralogical occurrences on the Moon. The Chandrayaan-1 Moon Mineralogy Mapper (M3), provided…
Pyroxene chemistry and crystallization history of basaltic units in the Mare Humorum on the nearside of the Moon: Implications for the volcanic history of the region
Rajesh, V. J.; Thesniya, P. M.
Mare basalts are volcanic features on the lunar surface and are vital for understanding the Moon's volcanic and thermal history. The present study investigates the mineralogy and chemical variations of the mare basaltic units in the Mare Humorum on the Moon's nearside using orbital remote sensing data from recent lunar exploration missions. The pr…
Optical properties of cometary particles collected by COSIMA: Assessing the differences between microscopic and macroscopic scales
Langevin, Y.; Schulz, R.; Hilchenbach, M. +6 more
The COSIMA mass spectrometer on-board Rosetta was equipped with an optical microscope, Cosiscope, which identified several 10,000 cometary particles collected on targets exposed during the orbital phase around the nucleus of comet 67P Churyumov-Gerasimenko. The median value of reflectance factors evaluated from Cosiscope images for large collected…
Survey of 1-Hz waves in the near-Venusian space: Venus Express observations
Zhang, T. L.; Chen, Y. Q.; Wang, G. Q. +2 more
With 32 Hz magnetic field data of Venus Express from May 2006 to August 2012, the global spatial distributions of 1-Hz waves in the near-Venusian space are presented in this paper. The occurrence rate of 1-Hz waves is maximized near the Venusian bow shock and decreases in the upstream with the distance away from the shock. Downstream of Venusian b…
Frontal Aureole Deposit on Acheron Fossae ridge as evidence for landslide-generated tsunami on Mars
De Blasio, Fabio Vittorio
The recurrent failures of the 8 to 10-km high basal scarp of the Olympus Mons volcano on Mars has resulted in enormous landslides merging into a composite deposit known as the aureole. The largest of these landslides, the western (W) aureole, appears as a hummocky and extensive tongue reaching the distance of 700 km from the present Olympus Mons e…
Electron dynamics near diamagnetic regions of comet 67P/Churyumov- Gerasimenko
Goldstein, R.; Mokashi, P.; Richter, I. +8 more
The Rosetta spacecraft detected transient and sporadic diamagnetic regions around comet 67P/Churyumov-Gerasimenko. In this paper we present a statistical analysis of bulk and suprathermal electron dynamics, as well as a case study of suprathermal electron pitch angle distributions (PADs) near a diamagnetic region. Bulk electron densities are corre…
Improved calibrations of the stellar occultation data accumulated by the SPICAV UV onboard Venus Express
Montmessin, Franck; Bertaux, Jean-Loup; Korablev, Oleg +2 more
Stellar occultation is a powerful method to study vertical structure of the Venus night mesosphere. The UV channel of SPICAV spectrometer, operated in 2006-2014 on board ESA's Venus Express orbiter, allowed retrieval profiles of atmospheric gases (CO2, SO2, and O3) and aerosols. It was also able to register differe…
The Zelima asteroid family: Resonant configuration and rotational fission clusters
Carruba, V.; Ribeiro, J. V.
Asteroid families are groups of asteroids that are identifiable in domains of proper elements. They may be the outcome of a collision, or the product of rotational fission. Among collisional families, young asteroid families are of interest because they preserve information on the original ejection velocity field with which the asteroid fragments …
The correlation length of ULF waves around Venus: VEX observations
Fränz, M.; Zhang, T. L.; Bolzan, M. J. A. +2 more
A study of the correlation length of ultra-low frequency (ULF) waves around Venus was developed using electron density and magnetic field data obtained from the Analyzer of Space Plasmas and Energetic Atoms (ASPERA-4) and magnetometer (MAG), respectively, on board of the mission Venus Express (VEX). The analysis was conducted using the whole inter…
Micro- and nanolander on the surface of Ryugu - Commonalities, differences and lessons learned for future microgravity exploration
Ulamec, Stephan; Ho, Tra-Mi; Lange, Caroline +2 more
Recent Space missions to the small bodies in our Solar System have shown an increasing importance of in-situ investigations. Philae, the comet lander of the ESA Rosetta mission performed the first landing on such a small body and its results clearly enhanced the overall scientific output of the Rosetta mission. While Philae was a rather heavy (~10…