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Projects

Research projects in transient astrophysics, survey science, and statistical inference.

01 · Survey selection

Measuring observational bias in real-time FRB surveys

Triggered surveys do not observe every burst equally. I model how detection thresholds, real-time triggering, and instrumental sensitivity transform an intrinsic FRB population into an observed sample.

Goal Build population analyses that carry survey selection effects through to the final inference.

Diagram showing a selection function transforming a universal population into an observed sample.
Selection functions connect the underlying population to detected events.

02 · FRB populations

Unifying repeating and apparent non-repeating FRBs

Some FRB sources repeat while many have been observed only once. This project tests whether those groups can arise from a shared underlying population after accounting for observing cadence, source activity, and the probability of detecting another burst.

Question When does a source appear to be a one-off because of its physics, and when because of how it was observed?

Forecast plot comparing cumulative repeater detection fractions for CHIME/FRB, CHORD, and DSA-2000.
Forecasting how repeater detections grow with survey time and sensitivity.

03 · Early-Universe constraints

Forecasting cosmic-string limits with radio transient surveys

Radio transient surveys can test models of the early Universe. I develop forecasts for how next-generation facilities may constrain cosmic-string populations through their predicted transient signatures.

Approach Translate survey design and null results into robust upper limits on cosmic-string models.

Illustration comparing smooth and perturbed cosmic strings and their resulting wake density fields.
Illustration of density wakes from smooth and perturbed cosmic strings.