Quantifying radio transient energetics and detection sensitivity for CHIME/FRB
Bibliographic record
Abstract
Fast Radio Bursts (FRBs) are microsecond-to-millisecond durations transient phenomenathat originate at cosmological distances. Some sources, called repeaters, have been observedto emit multiple bursts.The Canadian Hydrogen Intensity Mapping Experiment/Fast Radio Bursts(CHIME/FRB), situated in Penticton, BC, is a unique experiment in its capabilities todetect FRBs owing to its broad frequency range (400-800 MHz), large instantaneous fieldof view ( 200 square degrees), and daily scanning of full Northern sky. It has detected over4000 radio bursts.In this thesis, we present two data analysis pipelines designed to estimate the energeticsof FRBs detected by CHIME/FRB and the sensitivity of the telescope to those events.These measurements are compiled, along with CHIME/FRB’s on-sky exposure, to retrievean all-sky rate of FRB’s that has implications for the possible progenitor scenarios. Thesensitivity measurements produced using pipelines described in this thesis are also usedin complimentary work to put constraints on multi-wavelength counterpart detections andthe observed repeating behaviour of FRBs
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".