Lindsey Byrne

  • Program Year: 1
  • Academic Institution: Northwestern University
  • Field of Study: Astronomy
  • Academic Advisor: Claude-Andre Faucher-Giguere
  • Practicum(s): Practicum Not Yet Completed
  • Degree(s):
    B.A. Physics, Grinnell College, 2018

Summary of Research

Computer simulations of galaxy formation have greatly increased our understanding of the physics of galaxy evolution, helping to answer important questions about galactic processes such as star formation and stellar feedback, the structure of gas in and around galaxies, and the effects of galaxy mergers and collisions. In large-scale cosmological simulations, sub-grid models are used to simulate processes which occur below the resolution of the simulation; however, it is still unclear what models should be used to produce galaxies which best agree with observations of global star formation rates, scaling relations among stellar mass, halo mass, and black hole mass, etc. In my current research, I am developing and producing simulations with feedback from accreting supermassive black holes (also known as active galactic nuclei or AGN). These black holes produce massive amounts of energy in the forms of winds and relativistic jets, and may have a significant impact on galaxy evolution.

Publications

L. Byrne, C. Christensen, M. Tsekitsidis, A. Brooks, and T. Quinn (2019). "Implementing Dust Shielding as a Criteria for Star Formation", Astrophys. Journal, 871, 213. https://doi.org/10.3847/1538-4357/aaf9aa

"AGN Growth and Feedback in FIRE Cosmological Simulations." From AGN to Starburst: A Multi-Wavelength Synergy. Guiyang, China. Oral presentation. August 2019.

"Implementing dust shielding as a criteria for star formation in hydrodynamical simulations of galaxy formation." Grinnell College Physics Seminar. Grinnell, IA. Oral presentation. September 2017.

"Comparing the effects of supernovae feedback models on the interstellar medium." Grinnell College Physics Seminar. Grinnell, IA. Oral presentation. February 2017.

"Optical testing of holographic polymer-dispersed liquid crystals." Saturday Academy Apprenticeships in Science and Engineering Symposium. Portland, OR. Oral presentation.
August 2012

"Implementing dust shielding as a criteria for star formation in hydrodynamical simulations of galaxy formation." Poster presentation. American Astronomical Society Meeting. National Harbor, MD. January 2018.

"Comparing the effects of supernovae feedback models on the interstellar medium." Poster presentation. American Astronomical Society Meeting. Grapevine, TX. January 2017.

Awards

NSF GRFP Honorable Mention, 2018
H. George Apostle Prize in Physics, Grinnell College, 2018
Trustee Honor Scholar, Grinnell College, 2014-2018
National Merit Scholar, Grinnell College, 2014-2018