Photopolarimetric Modelling of Cometary Dust

Lead Research Organisation: University College London
Department Name: Physics and Astronomy

Abstract

The subject of the PhD research will be to carry out modelling of photopolarimetric data of comets, with the aim of recovering the structure and composition of the dust ejecta. The modelling results will be linked to the general properties of the solar system and models of its formation. The modelling is performed by adapting and using the multi-sphere T-matrix code (Mackowski, D W & Mishchenko, M I 2011, "A multiple sphere T-matrix Fortran code for use on parallel computer clusters", Journal of Quantitative Spectroscopy and Radiative Transfer, 122(13), 2182-2192). The output of this code will be compared with colour maps, polarimetric maps, and spectropolarimetric data of comet 67P, which were obtained during extensive campaings at the ESO VLT and at the ING WTH.

Publications

10 25 50

Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/N503927/1 19/10/2015 18/10/2020
1822035 Studentship ST/N503927/1 19/10/2015 18/09/2020 Rok Nezic
 
Description "PhD careers: the options" event travel grant
Amount £178 (GBP)
Organisation Science and Technologies Facilities Council (STFC) 
Sector Academic/University
Country United Kingdom
Start 10/2016 
End 10/2016
 
Description ELS XVI Conference fee waiver & travel grant
Amount $1,400 (USD)
Organisation Department of Defense 
Sector Public
Country United States
Start 01/2017 
End 04/2017
 
Description EPSC 2018 Conference fee waiver & travel grant
Amount € 450 (EUR)
Organisation Europlanet 
Sector Public
Country France
Start 06/2018 
End 09/2018
 
Description RAS Small Grant Award
Amount £750 (GBP)
Organisation Royal Astronomical Society 
Sector Learned Society
Country United Kingdom
Start 11/2016 
End 04/2017
 
Description Rosetta Workshop (Graz 2016) travel grant
Amount £235 (GBP)
Organisation Europlanet 
Sector Public
Country France
Start 07/2016 
End 07/2016
 
Description SAMCSS 2017 summer school application & travel grant
Amount £150 (GBP)
Organisation Science and Technologies Facilities Council (STFC) 
Sector Academic/University
Country United Kingdom
Start 05/2017 
End 08/2017
 
Title comintpol 
Description A series of IDL routines for processing of STEREO/SECCHI/COR2 polarisation triplet images containing comet imagery. Making use of SolarSoft routines, but making the image analysis smoother, more automatic and overall much more suitable for analysis of comets (rather than the general solar environment, which SolarSoft routines - and indeed the STEREO spacecraft - specialise in). 
Type Of Material Computer model/algorithm 
Year Produced 2019 
Provided To Others? No  
Impact The developed computer algorithm allows for bulk semi-automated analysis of large amounts of space-based observations of near-Sun comets. This has never been done with polarised imagery before and provides us with an opportunity to study in detail polarimetric properties of this large but still mostly mysterious comet group.