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I am a member of the Laser Interferometer Space Antenna (LISA) Fundamental Physics Working Group. LISA will build on the work of ground-based observatories that use test masses and lasers to measure tiny changes in distance. These changes result from variations in the curvature of spacetime, induced when one massive object interacts with and spirals into another.
My research interests within this framework focus on how LISA can observe Extreme Mass Ratio Inspirals (EMRIs), and how those observations can be used to test extensions of General Relativity. EMRIs are especially useful for this purpose because, when a stellar-mass black hole (typically 4–8 solar masses) spirals into a supermassive black hole (ranging from millions to billions of solar masses), the smaller object can be modeled effectively as a test particle. This allows us to compute the dynamics with high precision and detect subtle deviations in the emitted gravitational waves. Such deviations from Einstein’s theory could reshape our understanding of the large-scale structure of the universe and the physics of the early, near–Big Bang epoch.
Full record available at ORCiD
Problems and Solutions to Accompany University Physics
University Science Books
2025-08-01 | Book | Writing - original draft
ISBN: 9781940380520
Contributors: Ricardo Rodriguez; Hontas Freeman Farmer
New horizons for fundamental physics with LISA
Living Reviews in Relativity
2022-12 | Journal article
DOI: 10.1007/s41114-022-00036-9
2020-01-27 | Preprint
DOI: 10.1007/s10714-020-02691-1
BIBCODE: 2020GReGr…52…81B
ARXIV: 2001.09793
Part of ARXIV: arXiv:2001.09793v2
Disk-Outflow Models as Applied to High Mass Star Forming Regions through Methanol and Water Maser Observations.
International Journal of Astronomy and Astrophysics
2014-11-18 | Journal article
VizieR Online Data Catalog: Methanol masers in HII regions (Farmer, 2014)
VizieR Online Data Catalog (other)
2014-11 | Interactive resource
OTHER-ID: 2014yCatp051000401F
BIBCODE: 2014yCatp051000401F
Formal Unification of Gravity and Particle Physics in Lagrangian Euclidean Space with Experimental Predictions
APS April Meeting Abstracts 2019 | Conference abstract
BIBCODE: 2019APS…APRZ13005F
Contributors: Farmer, Hontas
Quantum Gravity, May Not Be The Right Question.
APS April Meeting Abstracts
2017-01 | Conference abstract
BIBCODE: 2017APS…APR.H3005F
Contributors: Farmer, Hontas
Dark matter as an integral part of an alternative gravity model
Bulletin of the American Physical Society
2014-04-07 | Conference abstract
DOI: 10.1103/BAPS.2014.APRIL.U15.7
BIBCODE: 2014APS…APRU15007F
Working on that. To be honest working at the community colleges that has not been an expected part of the job.
American Physical Society.
Laser Interferometer Space Antenna Consortium