Education
- Ph.D. in Astronomy and Astrophysics, University of California, Los Angeles, 2023
- M.S. in Astronomy and Astrophysics, University of California, Los Angeles, 2019
- B.S. in Astrophysics, University of California, Los Angeles, 2015
Selected publications
- “Hawking Radiation from non-evaporating primordial black holes cannot enable the formation of direct collapse black holes”, J. Regan, M. Kalomenopoulos, and K. Kosmo O’Neil, 2025, Open Journal of Astrophysics.
- "The Orbital Eccentricities of Directly Imaged Companions Using Observable-based Priors: Implications for Population-level Distributions," C. Do O, K. Kosmo O'Neil, et al., 2023, AJ, 156, 2.
- "Improving Orbit Estimates for Incomplete Orbits with a New Approach to Priors - with Applications from Black Holes to Planets", O'Neil, K. Kosmo, et al., 2019, AJ, 158, 1
- "Stellar Populations in the Central 0.5 pc of Our Galaxy III: The Dynamical Sub-structures", S. Jia, N. Xu, J.R. Lu, D.S. Chu, K. Kosmo O’Neil, et al., 2023, ApJ, 949, 1
- "A Population of Dust-Enshrouded Objects Orbiting the Galactic Black Hole", Ciurlo A., Campbell R. N., Morris M. R., Do T., Ghez A. M., Hees A., Sitarski B., O'Neil, K. Kosmo, et al., 2020, Nature, 577, 337-340
- "Relativistic redshift of the star S0-2 orbiting the Galactic center supermassive black hole", Do T., Hees A., Ghez A., Martinez G., Chu D. S., Jia S., Sakai S., Lu J. R., Gautam A. K., O'Neil, K. Kosmo, et al., 2019, Science, 365, 6454
- "Testing General Relativity with Stellar Orbits around the Supermassive Black Hole in Our Galactic Center", Hees A., Do T., Ghez A. M., Martinez G. D., Naoz S., Becklin E. E., Boehle A., Chappell S., Chu D., Dehghanfar A., Kosmo, K., et al., 2017, Physical Review Letters, 118, 211101
Courses taught
- PHYS 453/653 - Special and General Relativity
- AST 110 - Stellar Astronomy
- AST 310 - Astrophysics Measurements
- AST 410 - Astrophysics
Professional certifications
- Center for Integration of Research, Teaching, and Learning - Associate Level Certificate, 2022