cv
[Updated July, 2025]
Education
- Ph.D., Astrophysics, University of California, Berkeley, 2020
- M.S., Astrophysics, University of California, Berkeley, 2017
- B.S., Physics, Astronomy, University of Michigan, 2015
Appointments
- 2023 – present, NASA Hubble Fellow, at University of Michigan
- 2020 – 2023, Pappalardo Fellow, at Massachusetts Institute of Technology
Selected Publications
Lead author (9), *student-advised (4). See my ADS library for a full list of publications.
Kern, N. 2025, “A Differentiable, End-to-End Forward Model for 21 cm Cosmology: Estimating the Foreground, Instrument, and Signal Joint Posterior.” MNRAS 541 687K, arXiv:2504.07090
*Pascua, R., Martinot, Z., Liu, A., Aguirre, J., Kern, N. et al. 2024, “A Generalized Method for Characterizing 21-cm Power Spectrum Signal Loss from Temporal Filtering of Drift-scanning Visibilities.” ApJ 985 127P, arXiv:2410.01872
*Charles, N., Kern, N., Bernardi, G. et al. 2024, “Mitigating calibration errors from mutual coupling with time-domain filtering.” MNRAS 534 3349C, arXiv:2407.20923
*Kim, H., Kern, N., Hewitt, J. et al. 2023, “The Impact of Beam Variations on Power Spectrum Estimation for 21 cm Cosmology. II. Mitigation of Foreground Systematics for HERA.” ApJ 953 136, arXiv:2307.12826
*Charles, N., Kern, N., Bernardi, G. et al. 2023, “On the use of temporal filtering for mitigating galactic synchrotron calibration bias in 21 cm reionization observations.” MNRAS 522 1009C, arXiv:2302.00269
Barry, N., Bernardi, G., Greig, B., Kern, N. (lead author), and Mertens, F. 2022, “SKA-Low Intensity Mapping Pathfinder Updates: Deeper 21 cm Power Spectrum Limits from Improved Analysis Frameworks.” JATIS 8a1007B, arXiv:2110.06173
HERA Collaboration 2022, including Kern, N. (lead author), “First Results from HERA Phase I: Upper Limits on the Epoch of Reionization 21 cm Power Spectrum.” ApJ 925 221A, arXiv:2108.02263
Kern, N. and Liu, A. 2021, “Gaussian Process Foreground Subtraction and Power Spectrum Estimation for 21 cm Cosmology.” MNRAS 501 1463K, arXiv:2010.15892
Kern, N., Dillon, J., Parsons, A. et al. 2020, “Absolute Calibration Strategies for the Hydrogen Epoch of Reionization Array and Their Impact on the 21 cm Power Spectrum.” ApJ 890 122, arXiv:1910.12943
Kern, N., Parsons, A., Dillon, J. et al. 2020, “Mitigating Internal Instrument Coupling for 21cm Cosmology. II. A Method Demonstration with the Hydrogen Epoch of Reionization Array.” ApJ 888 70, arXiv:1909.11733
Kern, N., Parsons, A., Dillon, J. et al. 2019, “Mitigating Internal Instrument Coupling for 21cm Cosmology. I. Temporal and Spectral Modeling in Simulations.” ApJ 884 105, arXiv:1909.11732
Kern, N., Liu, A., Parsons, A. et al. 2017, “Emulating Simulations of Cosmic Dawn for 21 cm Power Spectrum Constraints on Cosmology, Reionization and X-ray Heating.” ApJ 848 23, arXiv:1705.04688
Kern, N., Keown, J., Tobin, J., et al. 2016, “Radio properties of young stellar objects in the Serpens South Infrared Dark Cloud.” AJ 151 42, arXiv:1511.09082
Selected Talks
Upcoming
| Event | Date | Type |
|---|---|---|
| Cosmo-25 Conference Pittsburgh, PA | October, 2025 | contributed talk |
| NASA Hubble Symposium Baltimore, MD | October, 2025 | contributed talk |
| 21cm Global Signal Conference Caltech, Pasadena, CA | September, 2025 | contributed talk |
| Astronomy Colloquium U. Toledo, Toledo, OH | September, 2025 | invited talk |
| HEP-Astro Seminar U. Michigan, Ann Arbor, MI | September, 2025 | invited talk |
| Astrophysics & Cosmology Seminar U. Illinois, Urbana-Champaign, IL | September, 2025 | invited talk |
Past
| Event | Date | Type |
|---|---|---|
| Cosmology From Home Conference Virtual | June, 2025 | contributed talk |
| Cosmology Seminar U. Wisconsin, Madison, WI | May, 2025 | invited talk |
| Multicolor LIM Conference IWH, Heidelberg, Germany | December, 2024 | contributed talk |
| NASA Hubble Symposium | September, 2024 | contributed talk |
| 243th AAS Meeting New Orleans, LA | January, 2024 | contributed talk |
| Theoretical Cosmology Seminar Johns Hopkins, Baltimore, MD | December, 2023 | invited talk |
| NASA Hubble Symposium Cambridge, MA | September, 2023 | contributed talk |
| Wisconsin 21 cm Workshop U. Wisconsin, Madison, WI | August, 2022 | contributed talk |
| 3rd URSI Atlantic Radio Science Meeting Gran Canaria, Spain | June, 2022 | invited talk |
| ASTRON/JIVE Colloquim ASTRON, Dwingeloo, Netherlands | March, 2022 | invited talk |
| Royal Astronomical Society Specialist Discussion Virtual | December, 2021 | invited talk |
| Science at Low Frequencies Virtual | December, 2021 | invited talk |
| Astrophysics Seminar Johns Hopkins, Baltimore, MD | November, 2021 | invited talk |
| INAF Joint Astrophysics Colloquium INAF, Bologna, Italy | November, 2021 | invited talk |
| Pappalardo Research Symposium MIT, Cambridge, MA | May, 2021 | invited talk |
| A Precursor View of the SKA Sky Virtual | March, 2021 | invited talk |
| First Billion Years Conference IIT Indore, Indore, India | January, 2020 | invited talk |
| Observational Cosmology Seminar Caltech, Pasadena, CA | December, 2019 | seminar talk |
| CfA SMA Seminar Harvard, Cambridge, MA | November, 2019 | seminar talk |
| MKI Lunch Talks MIT, Cambridge, MA | November, 2019 | seminar talk |
| BCCP Cosmology Workshop Berkeley, CA | January, 2018 | invited talk |
| JILA Astrophysics Seminar U. Colorado, Boulder, CO | October, 2017 | invited talk |
| NASA Machine Learning Workshop Ames Research Center, CA | August, 2017 | invited talk |