The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.
An Unambiguous Detection of Faraday Rotation in Sagittarius A*
Open accessAbstract
The millimeter/submillimeter wavelength polarization of Sgr A* is known to be variable in both magnitude and position angle on timescales down to a few hours. The unstable polarization has prevented measurements made at different frequencies and different epochs from yielding convincing measurements of Faraday rotation in this source. Here we present observations made with the Submillimeter Array polarimeter at 227 and 343 GHz with sufficient sensitivity to determine the rotation measure at each band without comparing position angles measured at separate epochs. We find the 10-epoch mean rotation measure to be (-5.6 ± 0.7) × 10 5 rad m -2 ; the measurements are consistent with a constant value. We conservatively assign a 3 σ upper limit of 2 × 10 5 rad m -2 to rotation measure changes, which limits accretion rate fluctuations to 25%. This rotation measure detection limits the accretion rate to less than 2 × 10 -7 M ☉ yr -1 if the magnetic field is near equipartition, ordered, and largely radial, while a lower limit of 2 × 10 -9 M ☉ yr -1 holds even for a subequipartition, disordered, or toroidal field. The mean intrinsic position angle is 167 ° ± 7 ° and we detect variations of 31 deg. These variations must originate in the submillimeter photosphere, rather than arising from rotation measure changes.
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“Observations of polarization and its variability in mm, sub-mm, and near IR wavelengths within the central 0 . 1 pc of the Sgr A ∗ have been instrumental in determining the mass accretion rate of the SMBH (Aitken et al. 2000; Marrone et al. 2007; Eckart et al. 2012; Brinkerink et al. 2016; Bower et al. 2018; Do et al. 2019; Michail et al. 2023).”
From The Fermi/eROSITA bubbles: a look into the nuclear outflow from the Milky Way (2024) · cites this paper as Marrone et al. 2007
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Cites
Advection-dominated Accretion: Underfed Black Holes and Neutron Stars
Narayan, R., & Yi, I. (1995) · The Astrophysical Journal · doi:10.1086/176343 · Cited by 1,679
Chandra X‐Ray Spectroscopic Imaging of Sagittarius A* and the Central Parsec of the Galaxy
Baganoff, F. K., Maeda, Y., Morris, M., Bautz, M. W., Brandt, W. N., Cui, W., Doty, J. P., Feigelson, E. D., Garmire, G. P., Pravdo, S. H., et al. (2003) · The Astrophysical Journal · doi:10.1086/375145 · Cited by 809
Three‐dimensional Magnetohydrodynamic Simulations of Radiatively Inefficient Accretion Flows
Igumenshchev, I. V., Narayan, R., & Abramowicz, M. A. (2003) · The Astrophysical Journal · doi:10.1086/375769 · Cited by 532
Self‐similar Accretion Flows with Convection
Narayan, R., Igumenshchev, I. V., & Abramowicz, M. A. (2000) · The Astrophysical Journal · doi:10.1086/309268 · Cited by 433
Convection‐dominated Accretion Flows
Quataert, E., & Gruzinov, A. V. (2000) · The Astrophysical Journal · doi:10.1086/309267 · Cited by 427
The Dynamical Structure of Nonradiative Black Hole Accretion Flows
Hawley, J. F., & Balbus, S. A. (2002) · The Astrophysical Journal · doi:10.1086/340765 · Cited by 287
An accreting black hole model for Sagittarius A
Melia, F. (1992) · The Astrophysical Journal · doi:10.1086/186297 · Cited by 211
Interferometric Measurements of Variable 340 GHz Linear Polarization in Sagittarius A*
Marrone, D. P., Moran, J. M., Zhao, J., & Rao, R. (2006) · The Astrophysical Journal · doi:10.1086/500106 · Cited by 205
Self-citationInterferometric Detection of Linear Polarization from Sagittarius A* at 230 GHz
Bower, G., Wright, M., Falcke, H., & Backer, D. (2003) · The Astrophysical Journal · doi:10.1086/373989 · Cited by 204
Constraining the Accretion Rate onto Sagittarius A* Using Linear Polarization
Quataert, E., & Gruzinov, A. (2000) · The Astrophysical Journal · doi:10.1086/317845 · Cited by 189
Research works printed but not linked: 1
- Marrone, D. P. 2006, Ph.D. thesis, Harvard Univ.
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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
Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Bach, U., Baczko, A.-K., Ball, D. R., et al. (2022) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ac6674 · Cited by 2,288
Hot Accretion Flows Around Black Holes
Yuan, F., & Narayan, R. (2014) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-082812-141003 · Cited by 1,529
The Galactic Center massive black hole and nuclear star cluster
Genzel, R., Eisenhauer, F., & Gillessen, S. (2010) · Reviews of Modern Physics · doi:10.1103/revmodphys.82.3121 · Cited by 1,236
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
Akiyama, K., Alberdi, A., Alef, W., Asada, K., Azulay, R., Baczko, A.-K., Ball, D. R., Baloković, M., Barrett, J., Bintley, D., et al. (2019) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ab0c96 · Cited by 1,209
Metadata
- Authors
- Marrone, D. P., Moran, J. M., Zhao, J.-H., & Rao, R.
- Affiliations
- University of Chicago (US)
- Center for Astrophysics Harvard & Smithsonian (US)
- Institute of Astronomy and Astrophysics, Academia Sinica (TW)
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2006-12-15
- Volume
- 654
- Issue
- 1
- Pages
- L57-L60
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2034547856
- Cited by
- 298
- References
- 26
- Citations by year
- 2026: 10 · 2025: 14 · 2024: 17 · 2023: 13 · 2022: 14 · 2021: 14 · 2020: 14 · 2019: 20 · 2018: 20 · 2017: 18 · 2016: 21 · 2015: 22 · 2014: 14 · 2013: 17 · 2012: 13
- FWCI
- 7.09
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Astrophysical Journal (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Digital Access to Scholarship at Harvard (DASH) (Harvard University) (submittedVersion, cc-by)
- arXiv (Cornell University)
- Funders
- Harvard University
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysical Phenomena and Observations
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Astrophysics and Cosmic Phenomena
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
- Keywords
- Sgr A*, Faraday rotation, rotation measure, black hole accretion, accretion rate, magnetic field, supermassive black holes
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