Outputs (7)

Light axion emission and the formation of merging binary black holes (2023)
Journal Article
Croon, D., & Sakstein, J. (2023). Light axion emission and the formation of merging binary black holes. Physical Review D, 108, Article 015034. https://doi.org/10.1103/PhysRevD.108.015034

We study the impact of stellar cooling due to light axion emission on the formation and evolution of black hole binaries, via stable mass transfer and the common envelope scenario. We find that in the presence of light axion emission, no binary blac... Read More about Light axion emission and the formation of merging binary black holes.

Gravitational wave constraints on extended dark matter structures (2023)
Journal Article
Croon, D., Ipek, S., & McKeen, D. (2023). Gravitational wave constraints on extended dark matter structures. Physical Review D, 107(6), Article 063012. https://doi.org/10.1103/physrevd.107.063012

We generalize existing constraints on primordial black holes to dark objects with extended sizes using the aLIGO design sensitivity. We show that LIGO is sensitive to dark objects with radius Oð10 − 103 kmÞ if they make up more than ∼Oð10−2 − 10−3Þ o... Read More about Gravitational wave constraints on extended dark matter structures.

Leptogenesis enabled by dark matter (2022)
Journal Article
Croon, D., Davoudiasl, H., & Houtz, R. (2022). Leptogenesis enabled by dark matter. Physical Review D, 106(3), https://doi.org/10.1103/physrevd.106.035006

We propose that weak scale leptogenesis via ∼10TeV scale right-handed neutrinos could be possible if their couplings had transitory larger values in the early Universe. The requisite lifted parameters can be attained if a light scalar ϕ is displaced... Read More about Leptogenesis enabled by dark matter.

Snowmass2021 theory frontier white paper: Astrophysical and cosmological probes of dark matter (2022)
Journal Article
Boddy, K. K., Lisanti, M., McDermott, S. D., Rodd, N. L., Weniger, C., Ali-Haïmoud, Y., …Witte, S. J. (2022). Snowmass2021 theory frontier white paper: Astrophysical and cosmological probes of dark matter. Journal of High Energy Astrophysics, 35, https://doi.org/10.1016/j.jheap.2022.06.005

While astrophysical and cosmological probes provide a remarkably precise and consistent picture of the quantity and general properties of dark matter, its fundamental nature remains one of the most significant open questions in physics. Obtaining a m... Read More about Snowmass2021 theory frontier white paper: Astrophysical and cosmological probes of dark matter.

Axion instability supernovae (2022)
Journal Article
Sakstein, J., Croon, D., & McDermott, S. D. (2022). Axion instability supernovae. Physical Review D, 105(9), Article 095038. https://doi.org/10.1103/physrevd.105.095038

and strongly coupled. In this work, we investigate the astrophysical consequences of such a scenario for massive stars by incorporating new contributions to the equation of state into a state of the art stellar structure code. We focus on axions in t... Read More about Axion instability supernovae.

Machine learning a manifold (2022)
Journal Article
Craven, S., Croon, D., Cutting, D., & Houtz, R. (2022). Machine learning a manifold. Physical Review D, 105(9), Article 096030. https://doi.org/10.1103/physrevd.105.096030

We propose a simple method to identify a continuous Lie algebra symmetry in a dataset through regression by an artificial neural network. Our proposal takes advantage of the Oðϵ2Þ scaling of the output variable under infinitesimal symmetry transforma... Read More about Machine learning a manifold.

Find the Gap: Black Hole Population Analysis with an Astrophysically Motivated Mass Function (2021)
Journal Article
Baxter, E. J., Croon, D., McDermott, S. D., & Sakstein, J. (2021). Find the Gap: Black Hole Population Analysis with an Astrophysically Motivated Mass Function. Astrophysical Journal Letters, 916(2), Article L16. https://doi.org/10.3847/2041-8213/ac11fc

We introduce a novel black hole mass function that realistically models the physics of pair-instability supernovae with a minimal number of parameters. Applying this to all events in the LIGO-Virgo Gravitational-Wave Transient Catalog 2 (GWTC-2), we... Read More about Find the Gap: Black Hole Population Analysis with an Astrophysically Motivated Mass Function.