Post-Doctoral Research Fellow since 2015
Most of my research revolves around the history of astronomy, chronology, and time-reckoning in medieval and early modern Europe, with a heavy focus on unpublished sources in medieval Latin manuscripts.
- Post-Doctoral Research Fellow, All Souls College (from 2015)
- Frances A. Yates Long-Term Fellow, The Warburg Institute, London (from 2013 to 2015)
- Research Associate, University College London (from 2011 to 2013)
- Buber Fellow, Martin Buber Society of Fellows in the Humanities, Hebrew University, Jerusalem (from 2010 to 2011)
- Undergraduate and Postgraduate, University of Munich (from 2003 to 2011)
- European intellectual history (medieval and early modern)
- The medieval Easter computus
- Chronology, calendars, and systems of dating
- History of mathematical astronomy
- History of astrological and anti-astrological thought
- Scandalous Error: Calendar Reform and Calendrical Astronomy in Medieval Europe (Oxford: Oxford University Press, forthcoming 2018).
- Walcher of Malvern: "De lunationibus" and "De Dracone"; Study, Edition, Translation, and Commentary (Turnhout: Brepols, 2017).
- Medieval Latin Christian Texts on the Jewish Calendar: A Study with Five Editions and Translations (Leiden: Brill, 2014).
- Dating the Passion: the Life of Jesus and the Emergence of Scientific Chronology (200–1600) (Leiden: Brill, 2012).
- "Vanitas vanitatum et super omnia vanitas: The Astronomer Heinrich Selder and a Newly Discovered Fourteenth-Century Critique of Astrology." Erudition and the Republic of Letters 1 (2016): 261-304.
- "Astronomy and Calendar Reform at the Curia of Pope Clement VI: A New Source." Annals of Science 74 (2017): 1–24.
- "Criticism of Trepidation Models and Advocacy of Uniform Precession in Medieval Latin Astronomy." Archive for History of Exact Sciences 71 (2017): 211–244.
- "A Reluctant Innovator: Graeco-Arabic Astronomy in the Computus of Magister Cunestabulus (1175)." Early Science and Medicine 22 (2017): 24–54.