Search Publications
New view of the Balmer-Kapteyn region: Cryptomare distribution and formation
Li, Fei; Yan, Jianguo; Gao, Wutong +4 more
Context. The cryptomare in the Balmer-Kapteyn region is the oldest one on the Moon. Determining the extent and formation of this feature can deepen our understanding of early mare volcanism and help establish temporal and spatial constraints on lunar thermal and volcanic history.
Aims: This paper focuses on the identification of lunar cryptom…
Processes governing the VIS/NIR spectral reflectance behavior of lunar swirls
Wöhler, C.; Grumpe, A.; Bhatt, M. +5 more
We investigated six bright swirls associated with magnetic anomalies of variable strength using Chandrayaan-1 Moon Mineralogy Mapper (M3) hyperspectral image data. We examined the 3 µm absorption band generally ascribed to solar wind-induced OH/H2O and spectral trends in the near-infrared wavelength range at on-swirl an…
Global mapping of lunar refractory elements: multivariate regression vs. machine learning
Wöhler, C.; Grumpe, A.; Bhatt, M. +2 more
Context. The quantitative estimation of elemental concentrations at the spatial resolution of hyperspectral near-infrared (NIR) images of the lunar surface is an important tool for understanding the processes relevant for the origin and evolution of the Moon.
Aims: We aim to map the abundances of the elements Fe, Ca, and Mg at a typical accur…
Detection of an excessively strong 3-µm absorption near the lunar highland crater Dufay
Wöhler, C.; Grumpe, A.; Bhatt, M. +3 more
Using the near-infrared spectral reflectance data of the Chandrayaan-1 Moon Mineralogy Mapper (M3) instrument, we report an unusually bright structure of 30 × 60 km2 on the lunar equatorial farside near crater Dufay. At this location, the 3-µm absorption band feature, which is commonly ascribed to hydroxyl (OH) and/or w…
Simulating charge transport to understand the spectral response of Swept Charge Devices
Narendranath, S.; Sreekumar, P.; Athiray, P. S. +1 more
Context. Swept Charge Devices (SCD) are novel X-ray detectors optimized for improved spectral performance without any demand for active cooling. The Chandrayaan-1 X-ray Spectrometer (C1XS) experiment onboard the Chandrayaan-1 spacecraft used an array of SCDs to map the global surface elemental abundances on the Moon using the X-ray fluorescence (X…