Search Publications
Seasonal variation in atmospheric optical depth (AOD) and thermal inertia (TI) inter-relationship over Martian Gale crater
Shaheen, Farzana; Krishna, A. P.; Nee Lala, Mili Ghosh +1 more
Investigating the relationship between thermal inertia (TI) and aerosol optical depth (AOD) is significant in giving insights into the seasonality of dust deposition and lifting phenomenon. The present study focuses on establishing a relationship of AOD with TI and different particle sizes over different Martian seasons. Two different Martian land…
Possible influence of Martian surface mineralogy on the detectability of atmospheric trace gases - mid-infrared simulation results
Błęcka, Maria I.
The paper focuses on the influence of the optical properties of Martian surface minerals on remotely detected gaseous components of the Martian atmosphere, when the spectrometer receives a combined signal from the Martian soil and atmosphere. Our considerations are primarily concerned with the detectability of methane, but the problem may also app…
Galactic cosmic rays at 0.7 A.U. with Venus Express housekeeping data
Wood, Simon; Witasse, Olivier; Sánchez-Cano, Beatriz +5 more
We apply a previously developed procedure to characterize galactic cosmic rays (GCRs) at 0.7 A.U. with engineering data coming from the Venus Express mission. The engineering parameters are the Error Detection and Correction EDAC cumulative counters, used for detection and correction of memory errors induced by highly energetic particles. It has a…
A discussion on estimating small bodies taxonomies using phase curves results
Alvarez-Candal, Alvaro
Upcoming large multiwavelength photometric surveys will provide a leap in our understanding of small body populations, among other fields of modern astrophysics. Serendipitous observations of small bodies in different orbital locations allow us to study diverse phenomena related to how their surfaces scatter solar light. In particular, multiple ob…
Addendum to "Description, accessibility and usage of SOIR/Venus Express atmospheric profiles of Venus distributed in VESPA (Virtual European Solar and Planetary Access)"
Vandaele, A. C.; Thomas, I. R.; Trompet, L. +9 more
The reference paper describing the SOIR data service available through the VESPA portal is Trompet et al. (2018). This data service contains an updated version of the profiles already available previously for AERO (aerosols), CO2, CO, H35Cl, H37Cl, HF, SO2, H2O, and HDO following Mahieux et al…
Using synthetic disk-integrated reflectance spectra to constrain direct imaging sensitivity requirements for a Mars-like exoplanet
Wolfe, C. A.; Robinson, T. D.
The 2020 Decadal Survey on Astronomy and Astrophysics 11https://doi.org/10.17226/26141. recommended the prioritization of a space-based telescope capable of directly characterizing Earth-like exoplanets in reflected light. The planned suite of instruments onboard such a mission are expected to provide disk-integrated spectra with modera…
Performance evaluation of pansharpening for planetary exploration: A case study on the implementation of TGO CaSSIS with MRO HiRISE
Cremonese, G.; Thomas, N.; Re, C. +3 more
The present study analyses the potential of pansharpening algorithms for planetary exploration studies, testing their performance with the 4-band images from the Colour and Stereo Surface Imaging System (CaSSIS) aboard the Exomars 2016 Trace Grace Orbiter (TGO) using HiRISE images from the Mars Reconnaissance Orbiter (MRO) mission as the base. Due…
On the origins of backscattered solar wind energetic neutral hydrogen from the Moon and Mercury
Verkercke, S.; Leblanc, F.; Tramontina, D. +8 more
The surfaces of planetary airless bodies are directly bombarded by solar particles. The most abundant of those particles are solar wind protons. In the case of the Moon, many in situ observations have shown that a significant portion of these incident solar-wind protons are backscattered as energetic neutral hydrogen atoms (ENA). Measurements of t…
Insights into the interaction between defrosting seasonal ices and gully activity from CaSSIS and HiRISE observations in Sisyphi Cavi, Mars
Pajola, M.; Munaretto, G.; Vincendon, M. +10 more
Martian gullies are surface features, typically composed of an alcove, a channel and a depositional apron. They have been extensively studied since their first observations in the 2000s and were initially attributed to the action of liquid water. Later studies highlighted that their activity is spatially and temporally correlated with the seasonal…
A novel methodology to estimate pre-atmospheric dynamical conditions of small meteoroids
Weryk, Robert; Janches, Diego; Stober, Gunter +5 more
Recent observations using the Wind and Ulysses spacecrafts and the Solar Occultation For Ice Experiment (SOFIE) during the period between 2007 and 2020 indicate a total cosmic dust influx at Earth ranging from 22 to 32 tonnes per day. Much is still unclear about the formation, evolution, and propagation of this cosmic dust throughout our Solar Sys…