The peaked spectrum and compact steep spectrum sources: Issues and opportunities
Bibliographic record
Abstract
Abstract The peaked spectrum (PS) radio sources are sub‐kpc in size and have a peak in the radio spectrum. The compact steep specrum (CSS) sources range from about 1 kpc to an adopted upper limit on projected linear size of 20 kpc. Because of their galactic‐scale range of size, the PS and CSS radio sources interact strongly with the ISM of this host galaxy. This means that the PS and CSS sources can be a significant source of the AGN feedback. The PS and CSS sources are a key phase in radio source evolution. Yet, there is substantial uncertainty regarding the origin of these sources, their lifetimes, and their evolution. There are many interesting open questions regarding the PS and CSS radio sources. Here, in this short introduction to the topic, I focus on the origin stories for these sources and how progress might be made.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.002 | 0.011 |
| Scholarly communication | 0.007 | 0.017 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.006 | 0.007 |
| Insufficient payload (model declined to judge) | 0.008 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".