The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
DETECTING FLARING STRUCTURES IN SAGITTARIUS A* WITH HIGH-FREQUENCY VLBI
Open accessAbstract
The super-massive black hole candidate, Sagittarius A*, exhibits variability from radio to X-ray wavelengths on timescales that correspond to <10 Schwarzschild radii. We survey the potential of millimeter wavelength very long baseline interferometry (VLBI) to detect and constrain time-variable structures that could give rise to such variations, focusing on a model in which an orbiting hot spot is embedded in an accretion disk. Nonimaging algorithms are developed that use interferometric closure quantities to test for periodicity, and applied to an ensemble of hot spot models that sample a range of parameter space. We find that structural periodicity in a wide range of cases can be detected on most potential VLBI arrays using modern VLBI instrumentation. Future enhancements of millimeter/submillimeter VLBI arrays including phased-array processors to aggregate VLBI station collecting area, increased bandwidth recording, and addition of new VLBI sites all significantly aid periodicity detection. The methods described herein can be applied to other models of Sagittarius A*, including jet outflows and magnetohydrodynamic accretion simulations.
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Cites
Ghez, A. M., Duchêne, G., Matthews, K., Hornstein, S. D., Tanner, A., Larkin, J., Morris, M., Becklin, E. E., Salim, S., Kremenek, T., et al. (2003) · The Astrophysical Journal · doi:10.1086/374804 · Cited by 717
Jennison, R. C. (1958) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/118.3.276 · Cited by 400
An Unambiguous Detection of Faraday Rotation in Sagittarius A*
Marrone, D. P., Moran, J. M., Zhao, J.-H., & Rao, R. (2007) · The Astrophysical Journal · doi:10.1086/510850 · Cited by 298
Detection of Polarized Millimeter and Submillimeter Emission from Sagittarius A*
Aitken, D. K., Greaves, J., Chrysostomou, A., Jenness, T., Holland, W., Hough, J. H., Pierce-Price, D., & Richer, J. (2000) · The Astrophysical Journal · doi:10.1086/312685 · Cited by 180
Cited by
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
The Event Horizon Telescope Collaboration, Akiyama, K., Alberdi, A., Alef, W., Asada, K., Azulay, R., Baczko, A.-K., Ball, D., Baloković, M., Barrett, J., et al. (2019) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ab0ec7 · Cited by 4,205
Self-citationMeasurement of the Kerr spin parameter by observation of a compact object’s shadow
Hioki, K., & Maeda, K.-I. (2009) · Physical Review D · doi:10.1103/physrevd.80.024042 · Cited by 444
The current ability to test theories of gravity with black hole shadows
Mizuno, Y., Younsi, Z., Fromm, C. M., Porth, O., De Laurentis, M., Olivares, H., Falcke, H., Kramer, M., & Rezzolla, L. (2018) · Nature Astronomy · doi:10.1038/s41550-018-0449-5 · Cited by 292
Fish, V. L., Doeleman, S. S., Beaudoin, C., Blundell, R., Bolin, D. E., Bower, G. C., Chamberlin, R., Freund, R., Friberg, P., Gurwell, M. A., et al. (2011) · The Astrophysical Journal · doi:10.1088/2041-8205/727/2/l36 · Cited by 214
Self-citationDexter, J., Agol, E., & Fragile, P. C. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/703/2/l142 · Cited by 131
Metadata
- Authors
- Doeleman, S. S., Fish, V. L., Broderick, A. E., Loeb, A., & Rogers, A. E. E.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2009-03-27
- Volume
- 695
- Issue
- 1
- Pages
- 59-74
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2165875176
- Cited by
- 165
- References
- 4
- FWCI
- 8.40
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Doeleman, S. S., Fish, V. L., Broderick, A. E., Loeb, A., & Rogers, A. E. E. (2009). DETECTING FLARING STRUCTURES IN SAGITTARIUS A* WITH HIGH-FREQUENCY VLBI. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/695/1/59
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