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Kevin A. S. Croker / 古剛 / ケビン・クロカーDepartment of Physics and AstronomyUniversity of Hawai'i at Mānoa 2505 Correa Road, Room 404 Honolulu, HI 96822 Office: +1 (808) 956-2975 Email: kcroker(s/this/at symbol)phys.hawaii.edu |
Curriculum Vitae
Talks with Video
I'm affiliate graduate faculty at the University of Hawai'i at Mānoa, welcome to my webpage! My broad research interest is Einstein's theory of gravitation, General Relativity (GR). I am currently exploring the observational consequences of cosmological energy shifts within relativistic compact objects (e.g. stellar collapse remnants such as non-singular black holes and neutron stars). I frequently collaborate with Profs. Nishimura and Farrah within the Department, and Prof. Weiner within the Department of Mathematics. Feel free to contact me if you would like to know more about our team! My thesis work focused on cosmological applications of GR, in particular, the Dark Energy problem. My past work has focused on the use of numerical simulations to compare and constrain proposed extensions of GR through existing astrophysical data. I believe observation is paramount.
Education
- Ph. D. Physics 2018 University of Hawai'i at Mānoa
- M. S. Physics 2012 University of Hawai'i at Mānoa
- B. S. Computer Science 2005 Washington University in St. Louis
Research Interests
- Phenomenology of General Relativity
- Cosmology / Perturbation theory in classical gravitation
- Variational Principles
Publications and Preprints
This list is current as of June 14 2025 13:19:11 UTC. Links are to the NASA Astrophysical Data System (ADS), where you can find links to the published papers, as well as citations, references, and full bibliometric data.- DESI dark energy time evolution is recovered by cosmologically coupled black holes Kevin S. Croker, Gregory Tarlé, Steve P. Ahlen, Brian G. Cartwright et al. 2024 Journal of Cosmology and Astroparticle Physics 2024 p. 094
- The Tale of Two Telescopes: How Hubble Uniquely Complements the James Webb Space Telescope: Galaxies Rogier A. Windhorst, Jake Summers, Timothy Carleton, Seth H. Cohen et al. 2024 arXiv e-prints p. arXiv:2410.01187
- Observational Evidence for Cosmological Coupling of Black Holes and its Implications for an Astrophysical Source of Dark Energy Duncan Farrah, Kevin S. Croker, Michael Zevin, Gregory Tarlé et al. 2023 The Astrophysical Journal Letters 944 p. L31
- A Preferential Growth Channel for Supermassive Black Holes in Elliptical Galaxies at z ≲ 2 Duncan Farrah, Sara Petty, Kevin S. Croker, Gregory Tarlé et al. 2023 The Astrophysical Journal 943 p. 133
- Molecular Gas Heating, Star Formation Rate Relations, and AGN Feedback in Infrared-Luminous Galaxy Mergers Duncan Farrah, Andreas Efstathiou, Jose Afonso, David L. Clements et al. 2022 Universe 9 p. 3
- Stellar and black hole assembly in z < 0.3 infrared-luminous mergers: intermittent starbursts versus super-Eddington accretion Duncan Farrah, Andreas Efstathiou, Jose Afonso, Jeronimo Bernard-Salas et al. 2022 Monthly Notices of the Royal Astronomical Society 513 p. 4770
- Well-defined equations of motion without constraining external sources Kevin S. Croker, Joel L. Weiner, Duncan Farrah, 2022 Physical Review D 105 p. 084042
- Cosmologically Coupled Compact Objects: A Single-parameter Model for LIGO-Virgo Mass and Redshift Distributions Kevin S. Croker, Michael Zevin, Duncan Farrah, Kurtis A. Nishimura et al. 2021 The Astrophysical Journal Letters 921 p. L22
- Design and first performance results of waveform sampling readout electronics for Large Area Picosecond Photodetector K. Croker, G. Jocher, K. Nishimura, V. Shebalin et al. 2020 Journal of Instrumentation 15 p. C11016
- Implications of Symmetry and Pressure in Friedmann Cosmology. III. Point Sources of Dark Energy that Tend toward Uniformity K. S. Croker, J. Runburg, D. Farrah, 2020 The Astrophysical Journal 900 p. 57
- Implications of Symmetry and Pressure in Friedmann Cosmology. II. Stellar Remnant Black Hole Mass Function K. S. Croker, K. A. Nishimura, D. Farrah, 2020 The Astrophysical Journal 889 p. 115
- Implications of Symmetry and Pressure in Friedmann Cosmology. I. Formalism K. S. Croker, J. L. Weiner, 2019 The Astrophysical Journal 882 p. 19
- Cosmological tests of the gravastar hypothesis K. A. S. Croker, 2016 arXiv e-prints p. arXiv:1612.07245
- ngravs: Distinct gravitational interactions in GADGET-2 K. A. S. Croker, 2016 Computer Physics Communications 207 p. 478
Recorded Talks
For a complete list of seminar talks I have given, please see my Curriculum Vitae.Invited Lecture at the 19th Appleton Space Conference, Rutherford Appleton Laboratory
December 7th, 2023AAS Journal Author Series Interview with Associate Editor-in-Chief Frank Timmes
April 18th, 2023
Grants and Fellowships
- Geometrical Foundations of Gravity and Their Comparison with Observations
- Estonian Research Council: 150000 EUR, Co-PI, 2015-2018
- Fulbright U.S. Student Program Fellow
- University of Tartu (Tartu Ülikool), Estonia, 2015
- European Union Scholarship
- University of Pittsburgh, Summer Language Institutes, 2015
- Baltic Summer Studies Institute (BALSSI) Scholarship
- University of Pittsburgh, Summer Language Institutes, 2015
- NSF East Asia and Pacific Summer Institutes (EAPSI) Fellow
- University of Tokyo/Kavli IMPU, Japan, 2014
Course Resources
- Tutorials, Guides, and Ancillary Materials These are notes I developed long ago for introductory physics lab. The gnuplot tutorial is surprisingly heavy traffic still.
Community and Science Service
- SONY Digital Paper System - Utilities and Notes
- Aragorn Time Tracker (Android platform)
- The Megatron Daemon (Cross platform)
This site is traffic-analyzed via Google Analytics
Last updated on Sat, 14 Jun 25 20:13:46 +0000
Last updated on Sat, 14 Jun 25 20:13:46 +0000