Daniel Joseph Oliver

NANOGrav Physics Frontiers Center Postdoctoral Fellow at Oregon State University

Publications

Mitigating the Timing Impact of Anomalous Pulse Profile Shape Variability in PSR J1713+0747 with Gaussian Component Modeling

S. A. Nichols et al. (34 authors including D. J. Oliver)

Submitted, The Astrophysical Journal

arXiv:2607.12038

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The NANOGrav 15 yr Data Set: Impacts of Customized Chromatic Noise Models on Gravitational Wave Analyses

N. Agarwal et al. (123 authors including D. J. Oliver)

Submitted, The Astrophysical Journal

arXiv:2606.28554

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The NANOGrav 15 yr and 20 yr Datasets: Timing Events and Pulse Shape Changes

B. Jacobson-Bell et al. (64 authors including D. J. Oliver)

The Astrophysical Journal

arXiv:2604.05453

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The NANOGrav 15 yr Data Set: Customized Chromatic Noise Models

B. Larsen, J. G. Baier, D. J. Oliver, K. Wayt, Y.-T. Chang, J. S. Hazboun, C. M. F. Mingarelli, et al. (56 authors), 2026

The Astrophysical Journal

arXiv:2606.28571

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The NANOGrav 12.5-year Data Set: Chromatic Noise Characterization & Mitigation with Time-Domain Kernels

J. S. Hazboun, J. Simon, B. Larsen, J. Baier, D. J. Oliver, et al. (67 authors), 2026

The Astrophysical Journal

arXiv:2511.22597

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Gravitational Wave Peep Contributions to Background Signal Confusion Noise for LISA

D. J. Oliver, A. D. Johnson, L. Janssen, J. Berrier, K. Glampedakis, D. Kennefick, 2026

Physical Review D

arXiv:2507.19704

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Peep Backgrounds
Stochastic background from gravitational wave peeps showing the total signal of from three different assumptions of population rates plotted over the LISA sensitivity curve for the A and E channels.

Gravitational wave peeps from EMRIs and their implication for LISA signal confusion noise

Classical and Quantum Gravity

arXiv:2305.05793

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Full EMRI waveform
Fully modeled EMRI from capture to merger modeled using a numerical kludge code (a = 0.8M, p = 119.999916M, e = 0.9999981). This waveform shows that there is very little amplitude evolution over the full inspiral until just before merger. This is due to the apoastron distance decreasing with each recurring burst of gravitational waves, and it isn't until the orbit is nearly circular that the periastron changes thus causing the amplitude evolution.