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Dr Alex Richings

Dr Alex Richings

Lecturer in Data Science, Artificial Intelligence and Modelling

Faculty and Department

  • Faculty of Science and Engineering
  • Data Science AI and Modelling Centre (DAIM)

Qualifications

  • PhD (Leiden university)

Summary

I was appointed as a Lecturer in the Centre for Data Science, Artificial Intelligence and Modelling (DAIM) and the E. A. Milne Centre for Astrophysics at the University of Hull in November 2022.

Previously, I was a Postdoctoral Research Associate and Teaching Fellow at the Institute for Computational Cosmology, Durham University (2018 - 2022), and a Lindheimer postdoctoral fellow at Northwestern University (2016 - 2018). Prior to that, I completed my Ph.D. in Astrophysics at the University of Leiden under the supervision of Prof. Joop Schaye (2011 - 2015).

From January 2023 I will be teaching for the module 'Fundamentals of Data Science'.

Recent outputs

View more outputs

Journal Article

The effects of local stellar radiation and dust depletion on non-equilibrium interstellar chemistry

Richings, A., Faucher-Giguere, C., Gurvich, A., Schaye, J., & Hayward, C. (2022). The effects of local stellar radiation and dust depletion on non-equilibrium interstellar chemistry. Monthly notices of the Royal Astronomical Society, 517(2), 1557-1583. https://doi.org/10.1093/mnras/stac2338

Unravelling the physics of multiphase AGN winds through emission line tracers

Richings, A. J., Faucher-Giguère, C. A., & Stern, J. (2021). Unravelling the physics of multiphase AGN winds through emission line tracers. Monthly notices of the Royal Astronomical Society, 503(2), 1568-1585. https://doi.org/10.1093/mnras/stab556

The changing circumgalactic medium over the last 10 Gyr-I. Physical and dynamical properties

Huscher, E., Oppenheimer, B. D., Lonardi, A., Crain, R. A., Richings, A. J., & Schaye, J. (2021). The changing circumgalactic medium over the last 10 Gyr-I. Physical and dynamical properties. Monthly notices of the Royal Astronomical Society, 500(1), 1476-1490. https://doi.org/10.1093/mnras/staa3203

Reproducing the CO-to-H2 conversion factor in cosmological simulations of Milky-Way-mass galaxies

Keating, L. C., Richings, A. J., Murray, N., Faucher-Giguère, C. A., Hopkins, P. F., Wetzel, A., …Orr, M. E. (2020). Reproducing the CO-to-H2 conversion factor in cosmological simulations of Milky-Way-mass galaxies. Monthly notices of the Royal Astronomical Society, 499(1), 837-850. https://doi.org/10.1093/mnras/staa2839

Pressure balance in the multiphase ISM of cosmologically simulated disc galaxies

Gurvich, A. B., Faucher-Giguère, C. A., Richings, A. J., Hopkins, P. F., Grudic, M. Y., Hafen, Z., …Murray, N. (2020). Pressure balance in the multiphase ISM of cosmologically simulated disc galaxies. Monthly notices of the Royal Astronomical Society, 498(3), 3664-3683. https://doi.org/10.1093/mnras/staa2578

Research interests

I use numerical simulations to study the formation and evolution of galaxies. My research particularly focusses on modelling the non-equilibrium chemistry of ions and molecules in these simulations. Chemistry plays an important role in understanding galaxy formation, as observations of galaxies often involve emission and absorption lines from individual chemical species, which trace different gas phases. By modelling the chemical processes that determine the abundances of these species, we can make predictions for these observables from our simulations that we can compare directly to observations. Accurate chemical modelling is also important for understanding how gas cools, as different species radiate away the thermal energy at different rates via transitions between excited states.

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