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THE STRUCTURE OF THE M87 JET: A TRANSITION FROM PARABOLIC TO CONICAL STREAMLINES
Open accessAbstract
The structure of the M87 jet, from milliarcsecond to arcsecond scales, is extensively investigated, utilizing the images taken with the European VLBI Network, MERLIN, and Very Long Baseline Array. We discover that the jet maintains a parabolic streamline over a range in size scale equal to 10 5 times the Schwarzschild radius. The jet then transitions into a conical shape farther downstream. This suggests that the magnetohydrodynamic jet is initially subjected to the confinement by the external gas which is dominated by the gravitational influence of the supermassive black hole. Afterward the jet then freely expands with a conical shape. This geometrical transition indicates that the origin of the HST-1 complex may be a consequence of the overcollimation of the jet. Our result suggests that when even higher angular resolution is provided by a future submillimeter very long baseline interferometry experiments, we will be able to explore the origin of active galactic nucleus jets.
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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-citationFirst M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
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/ab0f43 · Cited by 1,424
Self-citationWalker, R. C., Hardee, P. E., Davies, F. B., Ly, C., & Junor, W. (2018) · The Astrophysical Journal · doi:10.3847/1538-4357/aaafcc · Cited by 348
Metadata
- Authors
- Asada, K., & Nakamura, M.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2012-01-11
- Volume
- 745
- Issue
- 2
- Pages
- L28
- ISSN
- 2041-8205 (ISSN-L)
- 2041-8213
- OpenAlex
- W1973497701
- Cited by
- 313
- References
- 0
- FWCI
- 9.39
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: THE STRUCTURE OF THE M87 JET: A TRANSITION FROM PARABOLIC TO CONICAL STREAMLINES. https://app.cochat.ai/papers/10.1088/2041-8205/745/2/l28
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- Asada, K., & Nakamura, M. (2012). THE STRUCTURE OF THE M87 JET: A TRANSITION FROM PARABOLIC TO CONICAL STREAMLINES. The Astrophysical Journal. https://doi.org/10.1088/2041-8205/745/2/l28
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