Long-term radio monitoring of the neutron star X-ray binary <i>Swift</i> J1858.6−0814
Bibliographic record
Abstract
ABSTRACT We present the results of our long-term radio monitoring campaign at 1.3 GHz (MeerKAT) and 15.5 GHz (Arcminute Microkelvin Imager – Large Array, AMI-LA) for the outburst of the recently discovered neutron star X-ray binary Swift J1858.6−0814. Throughout the outburst, we observe radio emission consistent with a quasi-persistent, self-absorbed jet. In addition, we see two flares at MJD 58427 and 58530. The second flare allows us to place constraints on the magnetic field and minimum energy of the jet at 0.2 G and 5 × 1037 erg, respectively. We use the multifrequency radio data in conjunction with data from Swift-BAT (Burst Alert Telescope) to place Swift J1858.6−0814 on the radio/X-ray correlation. We find that the quasi-simultaneous radio and BAT data make Swift J1858.6−0814 appear to bridge the gap in the radio/X-ray plane between atoll and Z sources. Furthermore, AMI-LA observations made while Swift J1858.6−0814 was in the soft state have allowed us to show that the radio emission during the soft state is quenched by at least a factor of 4.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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 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".