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The Celestial Reference Frame at K Band: Imaging. I. The First 28 Epochs
Aletha de Witt, Christopher S. Jacobs, David Gordon, Michael Bietenholz, Marisa Nickola and Alessandra Bertarini The Astronomical Journal 165(4) 139 (2023) https://doi.org/10.3847/1538-3881/aca012
Key Science Goals for the Next-Generation Event Horizon Telescope
Testing space–time geometries and theories of gravity at the Galactic centre with pulsar’s time delay
Riccardo Della Monica, Ivan De Martino and Mariafelicia De Laurentis Monthly Notices of the Royal Astronomical Society 524(3) 3782 (2023) https://doi.org/10.1093/mnras/stad2125
The NANOGrav 15 yr Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational-wave Background
Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Paul T. Baker, Bence Bécsy, Laura Blecha, Alexander Bonilla, Adam Brazier, Paul R. Brook, Sarah Burke-Spolaor, Rand Burnette, Robin Case, J. Andrew Casey-Clyde, Maria Charisi, Shami Chatterjee, Katerina Chatziioannou, Belinda D. Cheeseboro, Siyuan Chen, Tyler Cohen, James M. Cordes, Neil J. Cornish, Fronefield Crawford, H. Thankful Cromartie, Kathryn Crowter, Curt J. Cutler, et al. The Astrophysical Journal Letters 952(2) L37 (2023) https://doi.org/10.3847/2041-8213/ace18b
Exploring dark matter spike distribution around the Galactic centre with stellar orbits
Zhao-Qiang Shen, Guan-Wen Yuan, Cheng-Zi Jiang, Yue-Lin Sming Tsai, Qiang Yuan and Yi-Zhong Fan Monthly Notices of the Royal Astronomical Society 527(2) 3196 (2023) https://doi.org/10.1093/mnras/stad3282
Precession-induced Variability in AGN Jets and OJ 287
Silke Britzen, Michal Zajaček, Christian Fendt, Emma Kun, Frédéric Jaron, Aimo Sillanpää and Andreas Eckart The Astrophysical Journal 951(2) 106 (2023) https://doi.org/10.3847/1538-4357/accbbc
Polarimetry and astrometry of NIR flares as event horizon scale, dynamical probes for the mass of Sgr A*
R. Abuter, N. Aimar, P. Amaro Seoane, A. Amorim, M. Bauböck, J. P. Berger, H. Bonnet, G. Bourdarot, W. Brandner, V. Cardoso, Y. Clénet, R. Davies, P. T. de Zeeuw, J. Dexter, A. Drescher, A. Eckart, F. Eisenhauer, H. Feuchtgruber, G. Finger, N. M. Förster Schreiber, A. Foschi, P. Garcia, F. Gao, Z. Gelles, E. Gendron, et al. Astronomy & Astrophysics 677 L10 (2023) https://doi.org/10.1051/0004-6361/202347416
The Galactic Center as a laboratory for theories of gravity and dark matter
Mariafelicia De Laurentis, Ivan de Martino and Riccardo Della Monica Reports on Progress in Physics 86(10) 104901 (2023) https://doi.org/10.1088/1361-6633/ace91b
General relativistic effects and the near-infrared and X-ray variability of Sgr A* I
Lense–Thirring effect and precession of timelike geodesics in slowly rotating black hole and naked singularity spacetimes
Parth Bambhaniya, Jay Verma Trivedi, Dipanjan Dey, Pankaj S. Joshi and Ashok B. Joshi Physics of the Dark Universe 40 101215 (2023) https://doi.org/10.1016/j.dark.2023.101215
Accelerations of stars in the central 2–7 arcsec from Sgr A*
Millimeter observational signatures of flares in magnetically arrested black hole accretion models
He Jia, Bart Ripperda, Eliot Quataert, Christopher J White, Koushik Chatterjee, Alexander Philippov and Matthew Liska Monthly Notices of the Royal Astronomical Society 526(2) 2924 (2023) https://doi.org/10.1093/mnras/stad2935
Wind-fed GRMHD simulations of Sagittarius A*: tilt and alignment of jets and accretion discs, electron thermodynamics, and multiscale modelling of the rotation measure
New black hole spin values for Sagittarius A* obtained with the outflow method
Ruth A Daly, Megan Donahue, Christopher P O’Dea, Biny Sebastian, Daryl Haggard and Anan Lu Monthly Notices of the Royal Astronomical Society 527(1) 428 (2023) https://doi.org/10.1093/mnras/stad3228
Rotation in Event Horizon Telescope Movies
Nicholas S. Conroy, Michi Bauböck, Vedant Dhruv, Daeyoung Lee, Avery E. Broderick, Chi-kwan Chan, Boris Georgiev, Abhishek V. Joshi, Ben Prather and Charles F. Gammie The Astrophysical Journal 951(1) 46 (2023) https://doi.org/10.3847/1538-4357/acd2c8
The role of resistivity in hot accretion flows with anisotropic pressure: Comparing magnetic field models
Sayyedeh Masoumeh Ghoreyshi and Alireza Khesali Publications of the Astronomical Society of Japan 75(1) 52 (2023) https://doi.org/10.1093/pasj/psac089
Particle acceleration by magnetic Rayleigh-Taylor instability: Mechanism for flares in black hole accretion flows
2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments
Nemanja Jovanovic, Pradip Gatkine, Narsireddy Anugu, Rodrigo Amezcua-Correa, Ritoban Basu Thakur, Charles Beichman, Chad F. Bender, Jean-Philippe Berger, Azzurra Bigioli, Joss Bland-Hawthorn, Guillaume Bourdarot, Charles M Bradford, Ronald Broeke, Julia Bryant, Kevin Bundy, Ross Cheriton, Nick Cvetojevic, Momen Diab, Scott A Diddams, Aline N Dinkelaker, Jeroen Duis, Stephen Eikenberry, Simon Ellis, Akira Endo, Donald F Figer, et al. Journal of Physics: Photonics 5(4) 042501 (2023) https://doi.org/10.1088/2515-7647/ace869
Epicyclic Oscillations and Circular Orbits in Hairy Black Holes: Testing by High-Frequency Quasi-Periodic Oscillations Observed in Microquasars
A New Covariant Formalism for Kinetic Plasma Simulations in Curved Spacetimes
Tyler Trent, Pierre Christian, Chi-kwan Chan, Dimitrios Psaltis and Feryal Özel The Astrophysical Journal Letters 959(1) L6 (2023) https://doi.org/10.3847/2041-8213/acf8c8
Dynamic and Polarimetric VLBI imaging with a multiscalar approach
Large-scale magnetic fields enabling fitting of the high-frequency QPOs observed around supermassive black holes
Zdeněk Stuchlík, Martin Kološ and Arman Tursunov Publications of the Astronomical Society of Japan 74(5) 1220 (2022) https://doi.org/10.1093/pasj/psac066
Magnetic Reconnection in Black Hole Magnetospheres: Lepton Loading into Jets, Superluminal Radio Blobs, and Multiwavelength Flares
Black Hole Flares: Ejection of Accreted Magnetic Flux through 3D Plasmoid-mediated Reconnection
B. Ripperda, M. Liska, K. Chatterjee, G. Musoke, A. A. Philippov, S. B. Markoff, A. Tchekhovskoy and Z. Younsi The Astrophysical Journal Letters 924(2) L32 (2022) https://doi.org/10.3847/2041-8213/ac46a1
Magnetic field structure in the vicinity of a supermassive black hole in low-luminosity galaxies: the case of Sgr A*
Antonios Nathanail, Prasun Dhang and Christian M Fromm Monthly Notices of the Royal Astronomical Society 513(4) 5204 (2022) https://doi.org/10.1093/mnras/stac1276
Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign
Maciek Wielgus, Nicola Marchili, Iván Martí-Vidal, Garrett K. Keating, Venkatessh Ramakrishnan, Paul Tiede, Ed Fomalont, Sara Issaoun, Joey Neilsen, Michael A. Nowak, Lindy Blackburn, Charles F. Gammie, Ciriaco Goddi, Daryl Haggard, Daeyoung Lee, Monika Moscibrodzka, Alexandra J. Tetarenko, Geoffrey C. Bower, Chi-kwan Chan, Koushik Chatterjee, Paul M. Chesler, Jason Dexter, Sheperd S. Doeleman, Boris Georgiev, Mark Gurwell, et al. The Astrophysical Journal Letters 930(2) L19 (2022) https://doi.org/10.3847/2041-8213/ac6428
First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole
Event Horizon Telescope Collaboration, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, et al. The Astrophysical Journal Letters 930(2) L14 (2022) https://doi.org/10.3847/2041-8213/ac6429
Electromagnetic signatures of strong-field gravity from accreting black-holes
Selective Dynamical Imaging of Interferometric Data
Joseph Farah, Peter Galison, Kazunori Akiyama, Katherine L. Bouman, Geoffrey C. Bower, Andrew Chael, Antonio Fuentes, José L. Gómez, Mareki Honma, Michael D. Johnson, Yutaro Kofuji, Daniel P. Marrone, Kotaro Moriyama, Ramesh Narayan, Dominic W. Pesce, Paul Tiede, Maciek Wielgus, Guang-Yao Zhao, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Anne-Kathrin Baczko, et al. The Astrophysical Journal Letters 930(2) L18 (2022) https://doi.org/10.3847/2041-8213/ac6615
First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole
Event Horizon Telescope Collaboration, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, et al. The Astrophysical Journal Letters 930(2) L16 (2022) https://doi.org/10.3847/2041-8213/ac6672
Implication of Spin Constraints by the Event Horizon Telescope on Stellar Orbits in the Galactic Center
First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration
Event Horizon Telescope Collaboration, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, et al. The Astrophysical Journal Letters 930(2) L13 (2022) https://doi.org/10.3847/2041-8213/ac6675
Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI
Avery E. Broderick, Roman Gold, Boris Georgiev, Dominic W. Pesce, Paul Tiede, Chunchong Ni, Kotaro Moriyama, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, et al. The Astrophysical Journal Letters 930(2) L21 (2022) https://doi.org/10.3847/2041-8213/ac6584
First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric
Event Horizon Telescope Collaboration, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, et al. The Astrophysical Journal Letters 930(2) L17 (2022) https://doi.org/10.3847/2041-8213/ac6756
Distinguishable feature of electric and magnetic charged black hole
Multiwavelength Variability of Sagittarius A* in 2019 July
H. Boyce, D. Haggard, G. Witzel, S. von Fellenberg, S. P. Willner, E. E. Becklin, T. Do, A. Eckart, G. G. Fazio, M. A. Gurwell, J. L. Hora, S. Markoff, M. R. Morris, J. Neilsen, M. Nowak, H. A. Smith and S. Zhang The Astrophysical Journal 931(1) 7 (2022) https://doi.org/10.3847/1538-4357/ac6104
Impact of a binary black hole on its outer circumbinary disc
Raphaël Mignon-Risse, Peggy Varniere and Fabien Casse Monthly Notices of the Royal Astronomical Society 519(2) 2848 (2022) https://doi.org/10.1093/mnras/stac3794
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
Event Horizon Telescope Collaboration, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, et al. The Astrophysical Journal Letters 930(2) L12 (2022) https://doi.org/10.3847/2041-8213/ac6674
What does lie at the Milky Way centre? Insights from the S2-star orbit precession
C R Argüelles, M F Mestre, E A Becerra-Vergara, V Crespi, A Krut, J A Rueda and R Ruffini Monthly Notices of the Royal Astronomical Society: Letters 511(1) L35 (2022) https://doi.org/10.1093/mnrasl/slab126
Applications of the Source-Frequency Phase-Referencing Technique for ngEHT Observations
Wu Jiang, Guang-Yao Zhao, Zhi-Qiang Shen, María J. Rioja, Richard Dodson, Ilje Cho, Shan-Shan Zhao, Marshall Eubanks and Ru-Sen Lu Galaxies 11(1) 3 (2022) https://doi.org/10.3390/galaxies11010003
Fermi bubbles: the collimated outburst needed to explain forward-shock edges
Santanu Mondal, Uri Keshet, Kartick C Sarkar and Ilya Gurwich Monthly Notices of the Royal Astronomical Society 514(2) 2581 (2022) https://doi.org/10.1093/mnras/stac1084
Flaremodel: An open-source Python package for one-zone numerical modelling of synchrotron sources
Magnetic reconnection and plasmoid formation in three-dimensional accretion flows around black holes
Antonios Nathanail, Vasilis Mpisketzis, Oliver Porth, Christian M Fromm and Luciano Rezzolla Monthly Notices of the Royal Astronomical Society 513(3) 4267 (2022) https://doi.org/10.1093/mnras/stac1118
Constraints on charged black hole parameters using quasiperiodic oscillations data
A Swift study of long-term changes in the X-ray flaring properties of Sagittarius A
A Andrés, J van den Eijnden, N Degenaar, et al. Monthly Notices of the Royal Astronomical Society 510(2) 2851 (2022) https://doi.org/10.1093/mnras/stab3407
Polarimetric signatures of hot spots in black hole accretion flows
Impact of non-thermal electron radiation effects on the horizon scale image structure of Sagittarius A∗
Shan-Shan Zhao, Lei Huang, Ru-Sen Lu and Zhiqiang Shen Monthly Notices of the Royal Astronomical Society 519(1) 340 (2022) https://doi.org/10.1093/mnras/stac3482
Sgr A* X-ray flares from non-thermal particle acceleration in a magnetically arrested disc
Nicolas Scepi, Jason Dexter and Mitchell C Begelman Monthly Notices of the Royal Astronomical Society 511(3) 3536 (2022) https://doi.org/10.1093/mnras/stac337
Observational signatures of hot spots orbiting horizonless objects
Persistent Non-Gaussian Structure in the Image of Sagittarius A* at 86 GHz
S. Issaoun, M. D. Johnson, L. Blackburn, A. Broderick, P. Tiede, M. Wielgus, S. S. Doeleman, H. Falcke, K. Akiyama, G. C. Bower, C. D. Brinkerink, A. Chael, I. Cho, J. L. Gómez, A. Hernández-Gómez, D. Hughes, M. Kino, T. P. Krichbaum, E. Liuzzo, L. Loinard, S. Markoff, D. P. Marrone, Y. Mizuno, J. M. Moran, Y. Pidopryhora, et al. The Astrophysical Journal 915(2) 99 (2021) https://doi.org/10.3847/1538-4357/ac00b0
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
Kazunori Akiyama, Juan Carlos Algaba, Antxon Alberdi, Walter Alef, Richard Anantua, Keiichi Asada, Rebecca Azulay, Anne-Kathrin Baczko, David Ball, Mislav Baloković, John Barrett, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Wilfred Boland, Katherine L. Bouman, Geoffrey C. Bower, Hope Boyce, Michael Bremer, Christiaan D. Brinkerink, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, et al. The Astrophysical Journal Letters 910(1) L13 (2021) https://doi.org/10.3847/2041-8213/abe4de
Searching for pulsars in the Galactic centre at 3 and 2 mm
Rapid Variability of Sgr A* across the Electromagnetic Spectrum
G. Witzel, G. Martinez, S. P. Willner, E. E. Becklin, H. Boyce, T. Do, A. Eckart, G. G. Fazio, A. Ghez, M. A. Gurwell, D. Haggard, R. Herrero-Illana, J. L. Hora, Z. 志远 Li 李, J. 俊 Liu 刘, N. Marchili, Mark R. Morris, Howard A. Smith, M. Subroweit and J. A. Zensus The Astrophysical Journal 917(2) 73 (2021) https://doi.org/10.3847/1538-4357/ac0891
A test of the fermionic dark matter nature of the supermassive compact object at the center of our galaxy
Polarization images of accretion flow around supermassive black holes: Imprints of toroidal field structure
Yuh Tsunetoe, Shin Mineshige, Ken Ohsuga, Tomohisa Kawashima and Kazunori Akiyama Publications of the Astronomical Society of Japan 73(4) 912 (2021) https://doi.org/10.1093/pasj/psab054
Hinting a dark matter nature of Sgr A* via the S-stars
E A Becerra-Vergara, C R Argüelles, A Krut, J A Rueda and R Ruffini Monthly Notices of the Royal Astronomical Society: Letters 505(1) L64 (2021) https://doi.org/10.1093/mnrasl/slab051