This is a reader-facing guide to the paper: what it is for, where it sits in the 70-entry parent-and-companion release, what the manuscript abstract says, and what not to over-read from the web page.
Declared calibration ledgers and observational stress windows for cosmology, compact objects, and carrier conversion.
Use this block for declared calibration ledgers and public witness windows. Treat every empirical contact as explicitly bounded.
The VP0 public-catalog selection-stress record evaluates the CHC--FRC fast-radio-burst count layer only on the declared CHIME/FRB Catalog 1 public-catalog route. The data object is the official CHIME/FRB Catalog 1 CSV, read through a declared column map and a narrow repeater-policy normalization for the CHIME missing-value sentinel in the repeater-name field. The archived manuscript remains authoritative for exact notation, equations, assumptions, and exclusions.
This web guide uses a reader-safe rendering of the manuscript abstract. The manuscript PDF and canonical archive remain authoritative for exact notation, equations, definitions, and exclusions.
These links jump into a source-derived web reader generated from the canonical TeX manuscript. Use the Zenodo PDF for exact equations, figures, tables, and final citation authority.
The FRC paper uses fast-radio-burst source counts and logarithmic-shell event-rate diagnostics only inside declared survey windows. For a homogeneous, non-evolving, Euclidean population the cumulative count diagnostic has the null form \Ngt\propto F^{-3/2}, but a CHIME/FRB catalog window requires explicit selection controls before that diagnostic can be interpreted. VP0 therefore asks a limited question: whether a declared evaluation on the official CHIME/FRB public-catalog data object remains compatible with the near-Euclidean count/log-shell diagnostic under visible catalog exclusions, repeater policy, fluence-threshold, excess-DM, and exposure-context controls.
The CHIME/FRB Open Data tutorial states that Catalog 1 data can be downloaded from the official CHIME/FRB website in CSV and FITS formats and also accessed through the open-data Python route [citation]. The same tutorial lists catalog fields including sky position, exposure columns, SNR, DM and excess-DM proxies, fluence, repeater labels, and an exclusion flag. The First CHIME/FRB Catalog reports 536 FRBs detected between 2018 July 25 and 2019 July 1, including 62 bursts from 18 previously reported repeaters, and it reports a cumulative fluence index compatible with the Euclidean value after selection calibration [citation]. The present VP0 paper uses the official public table as the data object for a declared stress evaluation; its row counts below refer to the delivered CSV records and declared prepared windows, not to a new astrophysical census.
The declared evaluation used the official Catalog 1 CSV object center
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A direct raw evaluation without the repeater adapter returned an indeterminate label. The reason is that the official Catalog 1 CSV encodes missing repeater names by the sentinel value -9999. For the declared non-repeater policy, this sentinel is a missing-value marker rather than a physical repeater name.
The accepted sentinel-normalized evaluation converts only the missing repeater sentinel to a blank/NA value before applying the non-repeater policy. It leaves fluence, flux, DM, excess-DM, sky position, exposure, exclusion flag, event identifier, and subburst fields unchanged.
The resolved column map is center
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The accepted VP0 window is produced by four visible steps:
- Drop rows with the declared exclusion flag: 42 dropped, 558 kept. - Require positive finite fluence: 4 dropped, 554 kept. - Apply the non-repeater policy after sentinel normalization: 90 dropped, 464 kept. - Deduplicate by tns_name: 30 dropped, 434 prepared rows kept.
These steps define the primary analysis window. Repeater-policy variants are then evaluated as stress checks, not as replacements for the primary window.
For a declared high-fluence window, the source-count diagnostic fits
\log_{10} \Ngt = a + \alphac \log_{10} F.The near-Euclidean value \alphac^{(0)}=-3/2 is used as a null diagnostic only.
The primary declared lane returns center
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The fluence-threshold stress board is center
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The repeater-policy stress board is center
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The excess-DM log-shell proxy uses positive \dmx values in six logarithmic bins. It returns counts [19,66,123,131,76,19] and positive-shell coefficient of variation 0.6118281691042171. This is a shell-count proxy only; it is not a redshift inversion or a physical shell-rate measurement.
The optional exposure-context lane records positive exp_up values for all 434 prepared rows, with p10/median/p90 equal to 11.5, 19.0, and 88.7. This records exposure context but does not reconstruct the CHIME/FRB selection function.
The assigned VP0 label is
\boxed{\texttt{FRC-VP0-CHIME-SELECTION-STRESS-BOUNDED-NULLOVERTURN}}.The declared reason is declared-window compatibility with the near-Euclidean count/rate diagnostic under visible selection controls. The label is supported by the primary count lane, three stable fluence-threshold variants, three stable repeater-policy variants, the positive excess-DM shell proxy, and the exposure-context lane.
The declared public-catalog stress result is identified in the companion source summaries by its source summary, gate configuration, and sentinel stress summary. These records identify the public-catalog route and the declared gate procedure; they do not strengthen the scientific label beyond . The companion source summaries identify the replay record and its public-source basis. These entries identify the public data surfaces used for the bounded gate; they do not strengthen the scientific label beyond .
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center It has only the bounded public-catalog selection-stress compatibility reading.
quote \ is classified as a declared public-catalog selection-stress result on CHIME/FRB Catalog 1. The declared sentinel-normalized evaluation gives \ with primary slope -1.35455, primary R^2=0.974342, and stable declared fluence-threshold and repeater-policy stress boards. The result is a declared-window null-compatibility/stress label only; it is not a global FRB source-count-law verification, a luminosity-function reconstruction, a DM-to-redshift inversion, a full CHIME/FRB selection-function closure, or a CHC propagation-correction detection. quote
Data and code availability..
This companion manuscript uses public CHIME/FRB data products and cited public references and companion statements as described in the text. Cited public references and companion statements, where provided, are identified by the companion source summaries cited in the text.
Funding and competing interests..
No external funding was received for this work. The author declares no competing interests.
Fast-Radio-Burst Source Counts and Log-Shell Event-Rate Inference in a Near-Euclidean Window
Read the abstract, then scan the section list before opening archive or companion materials.
CHC-FRC-VP1: Official CHIME/FRB Exposure-Injection Selection-Stress Gates
This paper belongs to CHC Framework Series v1.0. Open the DOI record for the public v1.0 archive package.
10.5281/zenodo.20282162Separate verification or support packages can be linked here if they are later released as public records.