Imaging a ring-like structure and the extended jet of M87 at 86 GHz
Context. The galaxy M87 is one of the prime targets for high resolution radio imaging to investigate the ring-like “shadow” of its supermassive black hole, the innermost regions of accretion flow, and the formation of the relativistic jet. However, it remains challenging to observe them jointly due...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/390469 |
| Acceso en línea: | http://hdl.handle.net/10261/390469 |
| Access Level: | acceso abierto |
| Palabra clave: | Methods: statistical Techniques: high angular resolution Techniques: image processing Techniques: interferometric Galaxies: active Galaxies: individual: M87 |
| Sumario: | Context. The galaxy M87 is one of the prime targets for high resolution radio imaging to investigate the ring-like “shadow” of its supermassive black hole, the innermost regions of accretion flow, and the formation of the relativistic jet. However, it remains challenging to observe them jointly due to the sparsity of the UV coverage and limited array sensitivity. In 2018, global mm-VLBI array (GMVA)+ALMA observations at 86 GHz enabled the simultaneous reconstruction of a ring structure and the extended jet emission. In order to analyze the ring and jet of M87, conventional CLEAN algorithms were mainly employed alongside the regularized maximum likelihood method SMILI in previous work. |
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