The DOI matches its Crossref record; 57 of the 57 references it cites were found in a registry or an index.
Nonthermal Electrons in Radiatively Inefficient Accretion Flow Models of Sagittarius A*
Open accessAbstract
We investigate radiatively inefficient accretion flow models for Sgr A*, the supermassive black hole in our Galactic center, in light of new observational constraints. Confirmation of linear polarization in the submillimeter emission argues for accretion rates much less than the canonical Bondi rate. We consider models with low accretion rates and calculate the spectra produced by a hybrid electron population consisting of both thermal and nonthermal particles. The thermal electrons produce the submillimeter emission and can account for its linear polarization properties. As noted in previous work, the observed low-frequency radio spectrum can be explained if a small fraction (≈1.5%) of the electron thermal energy resides in a soft power-law tail. In the innermost region of the accretion flow, turbulence and/or magnetic reconnection events may occasionally accelerate a fraction of the electrons into a harder power-law tail. We show that the synchrotron emission from these electrons, or the Compton upscattering of synchrotron photons by the same electrons, may account for the X-ray flares observed by Chandra .
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Citations
Cites
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Self-citationBLUMENTHAL, G. R., & GOULD, R. J. (1970) · Reviews of Modern Physics · doi:10.1103/revmodphys.42.237 · Cited by 1,538
Magnetic Reconnection: MHD Theory and Applications
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A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way
Schödel, R., Ott, T., Genzel, R., Hofmann, R., Lehnert, M., Eckart, A., Mouawad, N., Alexander, T., Reid, M. J., Lenzen, R., et al. (2002) · Nature · doi:10.1038/nature01121 · Cited by 1,166 · cited 1×
“There is compelling evidence that the center of our Galaxy hosts a massive black hole (BH) with mass M = 2.6×106M (e.g., Schödel et al. 2002; Ghez et al. 2003).”
BackgroundInfluentialChandra 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
Rapid X-ray flaring from the direction of the supermassive black hole at the Galactic Centre
Baganoff, F. K., Bautz, M. W., Brandt, W. N., Chartas, G., Feigelson, E. D., Garmire, G. P., Maeda, Y., Morris, M., Ricker, G. R., Townsley, L. K., et al. (2001) · Nature · doi:10.1038/35092510 · Cited by 634
Three‐dimensional Magnetohydrodynamic Simulations of Radiatively Inefficient Accretion Flows
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Cited by
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
Self-citationThe 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
Near-infrared flares from accreting gas around the supermassive black hole at the Galactic Centre
Genzel, R., Schödel, R., Ott, T., Eckart, A., Alexander, T., Lacombe, F., Rouan, D., & Aschenbach, B. (2003) · Nature · doi:10.1038/nature02065 · Cited by 688
First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric
Event Horizon Telescope Collaboration, Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Bach, U., Baczko, A.-K., et al. (2022) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ac6756 · Cited by 668
Self-citationFirst M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
The Event Horizon Telescope Collaboration, Akiyama, K., Algaba, J. C., Alberdi, A., Alef, W., Anantua, R., Asada, K., Azulay, R., Baczko, A.-K., Ball, D., et al. (2021) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/abe4de · Cited by 667
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Metadata
- Authors
- Yuan, F., Quataert, E., & Narayan, R.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2003-11-20
- Volume
- 598
- Issue
- 1
- Pages
- 301-312
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2006900906
- Cited by
- 708
- References
- 57
- FWCI
- 16.62
- Type
- journal article
- Language
- en
- Open access
- bronze
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