Peer-reviewed papers from the MiARD project
- Jean-Baptiste Vincent (from DLR) and colleagues have published the article Constraints on cometary surface evolution derived from a statistical analysis of 67P’s topography in Monthly Notices of the Royal Astronomical Society (doi.org/10.1093/mnras/stx1691, July 2017)
- Raphael Marschall (from the University of Bern) and colleagues have had the article Cliffs versus plains: Can ROSINA/COPS and OSIRIS data of comet 67P/Churyumov-Gerasimenko in autumn 2014 constrain inhomogeneous outgassing? accepted by Astronomy and Astrophysics (DOI: 10.1051/0004-6361/201730849, July 2017)
- A preprint is available fro DLR of Nilda Oklay’s paper ‘Long term survival of surface water ice on comet 67P‘ which is in review at MNRAS
Posters and conference presentations
here is a poster from Yann Brouet and colleagues at the University of Bern and the German Aerospace Centre (DLR) about modelling the ‘brightness temperature’ of comet 67P/Churyumov-Gerasimenko. This is an important step in the MiARD project’s attempts to link observations of the comet to numerical models of its activity. The poster summarises attempts to reproduce microwave emissions measured by the MIRO instrument on the Rosetta spacecraft, and was presented at the February 2017 workshop on ‘Remote Sensing of Land, Ice & Snow’ organised by the European Association of Remote Sensing Laboratories.
This poster, presented by Chariton Christou at the 30th Scottish meeting on Fluid Mechanics in May 2017, describes the development of a new modelling approach to help understand the outgassing activity of comets. The new approach is based on modelling techniques used in the oil and gas exploration industry, and for this initial work uses porous terrestrial sandstones as analogue materials for a cometary surface (for this work the composition of the material is not important, just the porosity). Three-dimensional X-ray tomography images of the sandstones are used as inputs to the calculations.
This ‘3D rock file’ is the result of a CT scan (X-ray tomography) of a porous rock, by staff at Heriot-Watt University. On some platforms you can view and rotate it directly in your web-browser, otherwise it may be necessary to download it and use a viewer for .stl files. (‘Preview’ works on Macintosh computers),