ログイン
言語:

WEKO3

  • トップ
  • ランキング
To
lat lon distance
To

Field does not validate



インデックスリンク

インデックスツリー

メールアドレスを入力してください。

WEKO

One fine body…

WEKO

One fine body…

アイテム

  1. 学術雑誌論文等

First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

https://hiroshima.repo.nii.ac.jp/records/2008905
https://hiroshima.repo.nii.ac.jp/records/2008905
21623cd5-0165-4340-b8ae-59e935a63171
名前 / ファイル ライセンス アクション
ApJL_875_L6.pdf ApJL_875_L6.pdf (5.3 MB)
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. VI. The Shadow and Mass of the Central Black Hole
言語 en
作成者 The Event Horizon Telescope Collaboration

× The Event Horizon Telescope Collaboration

en The Event Horizon Telescope Collaboration

Search repository
Sasada, Mahito

× Sasada, Mahito

en Sasada, Mahito

Search repository
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 gravitation
主題
主題Scheme Other
主題 techniques: high angular resolution
主題
主題Scheme Other
主題 techniques: interferometric
内容記述
内容記述 We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric crescent models (asymmetric rings with interior brightness depressions) using two independent sampling algorithms that consider distinct representations of the visibility data. We show that the crescent family of models is statistically preferred over other comparably complex geometric models that we explore. We calibrate the geometric model parameters using general relativistic magnetohydrodynamic (GRMHD) models of the emission region and estimate physical properties of the source. We further fit images generated from GRMHD models directly to the data. We compare the derived emission region and black hole parameters from these analyses with those recovered from reconstructed images. There is a remarkable consistency among all methods and data sets. We find that >50% of the total flux at arcsecond scales comes from near the horizon, and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole. Across all methods, we measure a crescent diameter of 42 ± 3 μas and constrain its fractional width to be <0.5. Associating the crescent feature with the emission surrounding the black hole shadow, we infer an angular gravitational radius of GM/Dc^2 = 3.8 ± 0.4 μas. Folding in a distance measurement of 16.8^+0.8_-0.7 Mpc gives a black hole mass of M = 6.5 ± 0.2∣_stat ± 0.7∣_sys × 10⁹M⊙. This measurement from lensed emission near the event horizon is consistent with the presence of a central Kerr black hole, as predicted by the general theory of relativity.
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/ab1141
関連情報
識別子タイプ DOI
関連識別子 https://doi.org/10.3847/2041-8213/ab1141
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 L6
書誌情報 The Astrophysical Journal Letters
The Astrophysical Journal Letters

巻 875, 号 1, p. L6, 発行日 2019-04-10
旧ID 48229
戻る
0
views
See details
Views

Versions

Ver.1 2025-02-21 04:38:36.600978
Show All versions

Share

Mendeley Twitter Facebook Print Addthis

Cite as

エクスポート

OAI-PMH
  • OAI-PMH JPCOAR 2.0
  • OAI-PMH JPCOAR 1.0
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON
  • BIBTEX

Confirm


Powered by WEKO3


Powered by WEKO3