How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models
The Event Horizon Telescope (EHT) Collaboration has successfully produced images of two supermassive black holes, enabling novel tests of black holes and their accretion flows on horizon scales. The EHT has so far published total intensity and linear polarization images, while upcoming images may in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Galaxies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4434/11/1/5 |
| _version_ | 1797620868265803776 |
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| author | Angelo Ricarte Michael D. Johnson Yuri Y. Kovalev Daniel C. M. Palumbo Razieh Emami |
| author_facet | Angelo Ricarte Michael D. Johnson Yuri Y. Kovalev Daniel C. M. Palumbo Razieh Emami |
| author_sort | Angelo Ricarte |
| collection | DOAJ |
| description | The Event Horizon Telescope (EHT) Collaboration has successfully produced images of two supermassive black holes, enabling novel tests of black holes and their accretion flows on horizon scales. The EHT has so far published total intensity and linear polarization images, while upcoming images may include circular polarization, rotation measure, and spectral index, each of which reveals different aspects of the plasma and space-time. The next-generation EHT (ngEHT) will greatly enhance these studies through wider recorded bandwidths and additional stations, leading to greater signal-to-noise, orders of magnitude improvement in dynamic range, multi-frequency observations, and horizon-scale movies. In this paper, we review how each of these different observables informs us about the underlying properties of the plasma and the spacetime, and we discuss why polarimetric studies are well-suited to measurements with sparse, long-baseline coverage. |
| first_indexed | 2024-03-11T08:47:41Z |
| format | Article |
| id | doaj.art-349808d09a284933aea7461f9567519a |
| institution | Directory Open Access Journal |
| issn | 2075-4434 |
| language | English |
| last_indexed | 2024-03-11T08:47:41Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Galaxies |
| spelling | doaj.art-349808d09a284933aea7461f9567519a2023-11-16T20:38:08ZengMDPI AGGalaxies2075-44342022-12-01111510.3390/galaxies11010005How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow ModelsAngelo Ricarte0Michael D. Johnson1Yuri Y. Kovalev2Daniel C. M. Palumbo3Razieh Emami4Center for Astrophysics|Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USACenter for Astrophysics|Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USAMax–Planck–Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, GermanyCenter for Astrophysics|Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USACenter for Astrophysics|Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USAThe Event Horizon Telescope (EHT) Collaboration has successfully produced images of two supermassive black holes, enabling novel tests of black holes and their accretion flows on horizon scales. The EHT has so far published total intensity and linear polarization images, while upcoming images may include circular polarization, rotation measure, and spectral index, each of which reveals different aspects of the plasma and space-time. The next-generation EHT (ngEHT) will greatly enhance these studies through wider recorded bandwidths and additional stations, leading to greater signal-to-noise, orders of magnitude improvement in dynamic range, multi-frequency observations, and horizon-scale movies. In this paper, we review how each of these different observables informs us about the underlying properties of the plasma and the spacetime, and we discuss why polarimetric studies are well-suited to measurements with sparse, long-baseline coverage.https://www.mdpi.com/2075-4434/11/1/5interferometrypolarimetryblack holesmagnetohydrodynamicsradiative transferaccretion |
| spellingShingle | Angelo Ricarte Michael D. Johnson Yuri Y. Kovalev Daniel C. M. Palumbo Razieh Emami How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models Galaxies interferometry polarimetry black holes magnetohydrodynamics radiative transfer accretion |
| title | How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models |
| title_full | How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models |
| title_fullStr | How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models |
| title_full_unstemmed | How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models |
| title_short | How Spatially Resolved Polarimetry Informs Black Hole Accretion Flow Models |
| title_sort | how spatially resolved polarimetry informs black hole accretion flow models |
| topic | interferometry polarimetry black holes magnetohydrodynamics radiative transfer accretion |
| url | https://www.mdpi.com/2075-4434/11/1/5 |
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