I'm working with Ben Weiss in the Department of Earth, Atmospheric and Planetary Sciences to understand the magnetic records carried by rocks that are typically too complex and heterogeneously altered to analyze at the bulk scale. We can do that thanks to the high-resolution magnetic microscopy facilities and in our lab, and with the new quantum diamond microscope arriving soon, we'll be able to embark upon even more sophisticated analyses! Further instruments that are designed to recreate conditions like those found on the parent asteroid allow us to access parts of the original magnetic record of extraterrestrial samples that would otherwise readily chemically alter and contaminate the magnetic record when heated. These complex, never-before-seen magnetic records provide evidence for past magnetic conditions in the Solar System, which can help us understand how our planetary system accreted and evolved into its present state.
I studied Geology and Geophysics at Imperial College London in London, UK. I also did my PhD at Imperial, which combined traditional paleomagnetic techniques with micro-computed tomography, scanning and transmission electron microscopy, focused ion-beam milling, and micromagnetic modeling to understand the complex and ancient magnetization carried by meteorites.
Shah, J., Williams, W., Almeida, T.P., Nagy, L., Muxworthy A.R., Kovács, A., Valdez-Grijalva M.A., Fabian, K., Russell, S.S., Genge, M.J., Dunin-Borkowski, R.E., The oldest magnetic record in our Solar System identified using nanometric imaging and numerical modeling. Nat. Commun. doi: 10.1038/s41467-018-03613-1.
Shah, J., Bates, H.C., Muxworthy, A.R., Hezel, D.C., Russell, S.S., Genge, M.J., Long-lived magnetism on chondrite parent bodies. Earth Planet. Sci. Lett. 475, pp. 106-118.
Shah, J., Koppers, A.A., Leitner, M., Leonhardt, R., Muxworthy, A.R., Heunemann, C., Bachtadse, V., Ashley, J.A. and Matzka, J., 2016. Palaeomagnetic evidence for the persistence or recurrence of geomagnetic main field anomalies in the South Atlantic. Earth Planet. Sci. Lett. 441, pp.113-124.