Data · dataset · 2026
black hole simulated data
Listed in ScienceDB
Select four types of black hole models with different morphological structures, namely Ring, Crescent, Disk, and Double, as observation models, and simulate observations based on the software package eht imaging published by the EHT collaborative organization to generate corresponding interferometric visibility data.
Description
To ensure that the generated simulated data samples in the spatial frequency domain are consistent with real observations, the UV coverage corresponding to the low-frequency measured data published by EHT on April 5, 2017 is used for sampling during the simulation observation process.
By performing Fourier transform on the brightness distribution of the model to calculate theoretical visibility, and extracting corresponding frequency domain information at real UV sampling points, simulated visibility data with real array geometric features can be obtained. On this basis, further thermal noise and system error models are added to simulate the actual observation environment more realistically. In addition, to maintain consistency in observation conditions, the polarization ratio is uniformly set to 0.40 and the polarization coherence length is 5uas.
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The resolution of the model image is set to 512 × 512 pixels, the field of view is 1024uas, and the center position of the image is aligned with the real observation data.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.37657 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Image 75% · Imaging 75% · Simulation 75%
Provenance · 1 source records, 13 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.37657 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[method].local:method:simulation | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:image | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[modality].local:modality:imaging | enrichment · scidb cn | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/rights |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |