astro-observation-reportlisted

# Gravitational-Wave Observational Results Writing Guide A markdown-driven skill encoding document structure, presentation patterns, and statistical conventions from LIGO/Virgo/KAGRA collaboration SOTA papers. ## Reference Source - **Reference type**: Uploaded PDF artifact (Physical Review X journal article) - **Reference artifact type**: PDF (peer-reviewed physics journal) - **Reference File Type**: PDF - **Supported outputs**: PDF, DOCX, PPTX - **Default output**: PDF (academic journal manuscript, two-column layout) ## First-Page Layout (Critical) The Physical Review X format places ALL of the following on page 1: 1. Journal header line: "PHYSICAL REVIEW X 9, 011001 (2019)" (centered, small caps) 2. Title (bold, centered, ~14pt) 3. Author line: "B. P. Abbott et al." with collaboration in parentheses 4. Received/revised/published dates 5. Abstract (single paragraph, ~200-250 words, full width or two-column) 6. DOI line and Subject Areas 7. Beginning of I. INTRODUCTION (small-caps heading) **There is NO separate title page or abstract page.** The introduction starts immediately after the abstract on the same page. ## Core Workflow 1. **Establish paper scope** -- Identify event(s), detector network, analysis epoch. Determine measurable parameters (masses, spins, tides, location, inclination) and what is not measurable (postmerger signal). 2. **Structure the manuscript** -- Follow section hierarchy in `references/structure_contract.md`. Architecture: compact