Spectroastrometric Reverberation Mapping of Broad-line Regions Article Swipe
Yanrong Li
,
Jianmin Wang
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2211.14767
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2211.14767
Spectroastrometry measures source astrometry as a function of wavelength/velocity. Reverberations of spectroastrometric signals naturally arise in broad-line regions (BLRs) of active galactic nuclei (AGNs) as a result of the continuum variations that drive responses of the broad emission lines with time delays. Such signals provide a new diagnostic for mapping BLR kinematics and geometry, complementary to the traditional intensity reverberation mapping (RM) technique. We present the generic mathematical formalism for spectroastrometric RM and show that under realistic parameters of a phenomenological BLR model, the spectroastrometric reverberation signals vary on a level of several to tens of microarcseconds, depending on the BLR size, continuum variability, and angular-size distance. We also derive the analytical expressions of spectroastrometric RM for an inclined ring-like BLR. We develop a Bayesian framework with a sophisticated Monte Carlo sampling technique to analyze spectroastrometric data and infer the BLR properties, including the central black hole mass and angular-size distance. We demonstrate the potential of spectroastrometric RM in spatially resolving BLR kinematics and geometry through a suite of simulation tests. The application to realistic observation data of 3C~273 obtains tentative, but enlightening results, reinforcing the practical feasibility of conducting spectroastrometric RM experiments on bright AGNs with the operating Very Large Telescope Interferometer as well as possibly with the planned next-generation 30 m class telescopes.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- http://arxiv.org/abs/2211.14767
- https://arxiv.org/pdf/2211.14767
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4310417284
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4310417284Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2211.14767Digital Object Identifier
- Title
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Spectroastrometric Reverberation Mapping of Broad-line RegionsWork title
- Type
-
preprintOpenAlex work type
- Language
-
enPrimary language
- Publication year
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2022Year of publication
- Publication date
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2022-11-27Full publication date if available
- Authors
-
Yanrong Li, Jianmin WangList of authors in order
- Landing page
-
https://arxiv.org/abs/2211.14767Publisher landing page
- PDF URL
-
https://arxiv.org/pdf/2211.14767Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://arxiv.org/pdf/2211.14767Direct OA link when available
- Concepts
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Reverberation mapping, Physics, Reverberation, Kinematics, Astrophysics, Formalism (music), Astrometry, Angular diameter, Active galactic nucleus, Monte Carlo method, Telescope, Galaxy, Stars, Classical mechanics, Acoustics, Statistics, Art, Mathematics, Musical, Visual artsTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.sampling | 131 |
| abstract_inverted_index.Telescope | 201 |
| abstract_inverted_index.continuum | 29, 102 |
| abstract_inverted_index.depending | 97 |
| abstract_inverted_index.distance. | 106, 150 |
| abstract_inverted_index.formalism | 68 |
| abstract_inverted_index.framework | 125 |
| abstract_inverted_index.geometry, | 53 |
| abstract_inverted_index.including | 142 |
| abstract_inverted_index.intensity | 58 |
| abstract_inverted_index.naturally | 13 |
| abstract_inverted_index.operating | 198 |
| abstract_inverted_index.potential | 154 |
| abstract_inverted_index.practical | 186 |
| abstract_inverted_index.realistic | 76, 174 |
| abstract_inverted_index.resolving | 160 |
| abstract_inverted_index.responses | 33 |
| abstract_inverted_index.ring-like | 119 |
| abstract_inverted_index.spatially | 159 |
| abstract_inverted_index.technique | 132 |
| abstract_inverted_index.analytical | 111 |
| abstract_inverted_index.astrometry | 3 |
| abstract_inverted_index.broad-line | 16 |
| abstract_inverted_index.conducting | 189 |
| abstract_inverted_index.diagnostic | 47 |
| abstract_inverted_index.kinematics | 51, 162 |
| abstract_inverted_index.parameters | 77 |
| abstract_inverted_index.simulation | 169 |
| abstract_inverted_index.technique. | 62 |
| abstract_inverted_index.tentative, | 180 |
| abstract_inverted_index.variations | 30 |
| abstract_inverted_index.application | 172 |
| abstract_inverted_index.demonstrate | 152 |
| abstract_inverted_index.experiments | 192 |
| abstract_inverted_index.expressions | 112 |
| abstract_inverted_index.feasibility | 187 |
| abstract_inverted_index.observation | 175 |
| abstract_inverted_index.properties, | 141 |
| abstract_inverted_index.reinforcing | 184 |
| abstract_inverted_index.telescopes. | 214 |
| abstract_inverted_index.traditional | 57 |
| abstract_inverted_index.angular-size | 105, 149 |
| abstract_inverted_index.enlightening | 182 |
| abstract_inverted_index.mathematical | 67 |
| abstract_inverted_index.variability, | 103 |
| abstract_inverted_index.complementary | 54 |
| abstract_inverted_index.reverberation | 59, 85 |
| abstract_inverted_index.sophisticated | 128 |
| abstract_inverted_index.Interferometer | 202 |
| abstract_inverted_index.Reverberations | 9 |
| abstract_inverted_index.next-generation | 210 |
| abstract_inverted_index.microarcseconds, | 96 |
| abstract_inverted_index.phenomenological | 80 |
| abstract_inverted_index.Spectroastrometry | 0 |
| abstract_inverted_index.spectroastrometric | 11, 70, 84, 114, 135, 156, 190 |
| abstract_inverted_index.wavelength/velocity. | 8 |
| cited_by_percentile_year | |
| countries_distinct_count | 0 |
| institutions_distinct_count | 2 |
| citation_normalized_percentile.value | 0.15886758 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | False |