Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Lev Arzamasskiy"'
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 2, p 136 (2024)
In high-Lundquist-number plasmas, reconnection proceeds via the onset of tearing, followed by a nonlinear phase during which plasmoids continuously form, merge, and are ejected from the current sheet (CS). This process is understood in fully ionized,
Externí odkaz:
https://doaj.org/article/6dbf09b7b81a4ca587d78f7d7b660165
Autor:
George N. Wong, Lev Arzamasskiy
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 163 (2024)
Horizon-scale observations from the Event Horizon Telescope (EHT) have enabled precision study of supermassive black hole accretion. Contemporary accretion modeling often treats the inflowing plasma as a single, thermal fluid, but microphysical kinet
Externí odkaz:
https://doaj.org/article/f74bab489f3e453385422ebd85d935a1
Publikováno v:
Physical Review X, Vol 13, Iss 2, p 021014 (2023)
We present results from three-dimensional hybrid-kinetic simulations of Alfvénic turbulence in a high-β, collisionless plasma. The key feature of such turbulence is the interplay between local wave-wave interactions between the fluctuations in the
Externí odkaz:
https://doaj.org/article/c872750d0f814508b901758510f48942
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 1, p 12 (2023)
The secular evolution of disk galaxies is largely driven by resonances between the orbits of “particles” (stars or dark matter) and the rotation of non-axisymmetric features (spiral arms or a bar). Such resonances may also explain kinematic and p
Externí odkaz:
https://doaj.org/article/d39e3a4584004791b6259b0ae39eb656
Autor:
Jonathan Squire, Romain Meyrand, Matthew W. Kunz, Lev Arzamasskiy, Alexander A. Schekochihin, Eliot Quataert
The fast solar wind's high speeds and nonthermal features require that significant heating occurs well above the Sun's surface. Two leading theories seem incompatible: low-frequency "Alfv\'enic" turbulence, which transports energy outwards and is obs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaf97df683b25ec3c0cef246ee996b3b
https://ora.ox.ac.uk/objects/uuid:877459b8-2fd8-4ddc-8162-7c054be0e008
https://ora.ox.ac.uk/objects/uuid:877459b8-2fd8-4ddc-8162-7c054be0e008
Fully kinetic shearing-box simulations of magnetorotational turbulence in 2D and 3D. I. Pair plasmas
Autor:
Fabio Bacchini, Lev Arzamasskiy, Vladimir Zhdankin, Gregory R. Werner, Mitchell C. Begelman, Dmitri A. Uzdensky
The magnetorotational instability (MRI) is a fundamental mechanism determining the macroscopic dynamics of astrophysical accretion disks. In collisionless accretion flows around supermassive black holes, MRI-driven plasma turbulence cascading to micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5928f0e89b9c5ccd904a31da3d97917
Autor:
Ethan T. Vishniac, Lev Arzamasskiy, Irina Zhuravleva, Greg L. Bryan, Matteo Fossati, Alessandro Boselli, Eric Emsellem, Miao Li, Cassandra Lochhaas, Siyao Xu, Aurora Simionescu, Yong Zheng, Julie Hlavacek-Larrondo, Marie Lou Gendron-Marsolais, Eliot Quataert, Grant R. Tremblay, Marc Sarzi, Norman Murray, Yuan Li
Publikováno v:
Astrophys.J.Lett.
Astrophys.J.Lett., 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
The Astrophysical journal letters, 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
Astrophys.J.
Astrophys.J., 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
The Astrophysical Journal
The Astrophysical Journal Letters, 889(1), L1
Astrophysical journal, 2020, Vol.889(1), pp.L1 [Peer Reviewed Journal]
Astrophys.J.Lett., 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
The Astrophysical journal letters
The Astrophysical journal letters, Bristol : IOP Publishing, 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
The Astrophysical journal letters, 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
Astrophys.J.
Astrophys.J., 2020, 889 (1), pp.L1. ⟨10.3847/2041-8213/ab65c7⟩
The Astrophysical Journal
The Astrophysical Journal Letters, 889(1), L1
Astrophysical journal, 2020, Vol.889(1), pp.L1 [Peer Reviewed Journal]
Supermassive black holes (SMBHs) are thought to provide energy that prevents catastrophic cooling in the centers of massive galaxies and galaxy clusters. However, it remains unclear how this "feedback" process operates. We use high-resolution optical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a577d596f5d4a8c8f961e8e3fa388b03
https://hal.archives-ouvertes.fr/hal-02416919
https://hal.archives-ouvertes.fr/hal-02416919
Publikováno v:
The Astrophysical Journal. 916:120
We revisit the theory of stochastic heating of ions and investigate its phase-space signatures in kinetic turbulence of relevance to low-$\beta$ portions of the solar wind. We retain a full scale-dependent approach in our treatment, and consider the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a6ea511b5ee2b60362ba389e88eebef
https://doi.org/10.3847/1538-4357/abfbde
https://doi.org/10.3847/1538-4357/abfbde
The interaction of a satellite with a gaseous disk results in the excitation of spiral density waves which remove angular momentum from the orbit. In addition, if the orbit is not coplanar with the disk, three-dimensional effects will excite bending
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::31ddc6b8ea65c3101a311349b1cec803
Autor:
Lev Arzamasskiy, Roman R. Rafikov
Spiral density waves are known to exist in many astrophysical disks, potentially affecting disk structure and evolution. We conduct a numerical study of the effects produced by a density wave, evolving into a shock, on the characteristics of the unde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccb4facddc0d64dc388100329d3e7040