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First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
https://hiroshima.repo.nii.ac.jp/records/2008907
https://hiroshima.repo.nii.ac.jp/records/20089079373a49d-4c87-43c8-a8de-23131ab707eb
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ApJL_875_L4.pdf (20.3 MB)
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| Item type | デフォルトアイテムタイプ_（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-18 | |||||||||
| タイトル | ||||||||||
| タイトル | First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole | |||||||||
| 言語 | en | |||||||||
| 作成者 |
The Event Horizon Telescope Collaboration
× The Event Horizon Telescope Collaboration
× Sasada, Mahito
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 権利情報 | ||||||||||
| 権利情報 | © 2019. The American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | black hole physics | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | galaxies: individual (M87) | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | galaxies: jets | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | techniques: high angular resolution | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | techniques: image processing | |||||||||
| 主題 | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | techniques: interferometric | |||||||||
| 内容記述 | ||||||||||
| 内容記述 | We present the first Event Horizon Telescope (EHT) images of M87, using observations from April 2017 at 1.3 mm wavelength. These images show a prominent ring with a diameter of ∼40 μas, consistent with the size and shape of the lensed photon orbit encircling the “shadow" of a supermassive black hole. The ring is persistent across four observing nights and shows enhanced brightness in the south. To assess the reliability of these results, we implemented a two-stage imaging procedure. In the first stage, four teams, each blind to the others’ work, produced images of M87 using both an established method (CLEAN) and a newer technique (regularized maximum likelihood). This stage allowed us to avoid shared human bias and to assess common features among independent reconstructions. In the second stage, we reconstructed synthetic data from a large survey of imaging parameters and then compared the results with the corresponding ground truth images. This stage allowed us to select parameters objectively to use when reconstructing images of M87. Across all tests in both stages, the ring diameter and asymmetry remained stable, insensitive to the choice of imaging technique. We describe the EHT imaging procedures, the primary image features in M87, and the dependence of these features on imaging assumptions. | |||||||||
| 言語 | en | |||||||||
| 出版者 | ||||||||||
| 出版者 | The American Astronomical Society | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.3847/2041-8213/ab0e85 | |||||||||
| 関連情報 | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | https://doi.org/10.3847/2041-8213/ab0e85 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 2041-8205 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 2041-8213 | |||||||||
| 開始ページ | ||||||||||
| 開始ページ | L4 | |||||||||
| 書誌情報 |
The Astrophysical Journal Letters The Astrophysical Journal Letters 巻 875, 号 1, p. L4, 発行日 2019-04-10 |
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| 旧ID | 48227 | |||||||||
