Zobrazeno 1 - 10
of 255
pro vyhledávání: '"M Opher"'
Interstellar Neutral Hydrogen in the Heliosphere: New Horizons Observations in the Context of Models
Autor:
P. Swaczyna, M. Bzowski, K. Dialynas, L. Dyke, F. Fraternale, A. Galli, J. Heerikhuisen, M. Z. Kornbleuth, D. Koutroumpa, I. Kowalska-Leszczyńska, M. A. Kubiak, A. T. Michael, H.-R. Müller, M. Opher, F. Rahmanifard
Publikováno v:
The Astrophysical Journal Letters, Vol 969, Iss 1, p L20 (2024)
Interstellar neutral (ISN) hydrogen is the most abundant species in the outer heliosheath and the very local interstellar medium (VLISM). Charge-exchange collisions in the outer heliosheath result in filtration, reducing the ISN hydrogen density insi
Externí odkaz:
https://doaj.org/article/ce01f8f9717647b384ba080be16a34d4
Autor:
M. Kornbleuth, M. Opher, M. A. Dayeh, J. M. Sokół, Y. Chen, E. Powell, D. L. Turner, I. Baliukin, K. Dialynas, V. Izmodenov
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 1, p L12 (2024)
Determining the magnitude and direction of the interstellar magnetic field ( B _ISM ) is a long-standing problem. To date, some methods to infer the direction and magnitude have utilized best-fit models to the positions of the termination shock and h
Externí odkaz:
https://doaj.org/article/6cc952729670497680fd1e84cf23e8aa
Autor:
L.-L. Zhao, G. P. Zank, M. Opher, B. Zieger, H. Li, V. Florinski, L. Adhikari, X. Zhu, M. Nakanotani
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 26 (2024)
Magnetic field fluctuations measured in the heliosheath by the Voyager spacecraft are often characterized as compressible, as indicated by a strong fluctuating component parallel to the mean magnetic field. However, the interpretation of the turbulen
Externí odkaz:
https://doaj.org/article/27da185d78024ff2b08370852fe5c815
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 2, p 46 (2024)
Test-particle simulations are an important tool for magnetospheric and heliophysics research. In this paper, we present the Space Plasma and Energetic Charged particle TRansport on Unstructured Meshes (SPECTRUM) software as a novel tool for performin
Externí odkaz:
https://doaj.org/article/6304621e03e345a58c10328b9573068c
Autor:
K. Dialynas, V. J. Sterken, P. C. Brandt, L. Burlaga, D. B. Berdichevsky, R. B. Decker, S. Della Torre, R. DeMajistre, A. Galli, M. Gkioulidou, M. E. Hill, S. M. Krimigis, M. Kornbleuth, W. Kurth, B. Lavraud, R. McNutt, D. G. Mitchell, P. S. Mostafavi, R. Nikoukar, M. Opher, E. Provornikova, E. C. Roelof, P. G. Rancoita, J. D. Richardson, E. Roussos, J. M. Sokół, G. La Vacca, J. Westlake, T. Y. Chen
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
The recently published Interstellar Probe (ISP) study report describes a pragmatic mission concept with a launch window that starts in 2036 and is expected to reach several hundreds of astronomical units past the heliopause within a time frame of ≥
Externí odkaz:
https://doaj.org/article/381509ff5dc6476dabe62880e213ec99
Autor:
B. Lavraud, M. Opher, K. Dialynas, D. L. Turner, S. Eriksson, E. Provornikova, M. Z. Kornbleuth, P. Mostafavi, A. Fedorov, J. D. Richardson, S. A. Fuselier, J. Drake, M. Swisdak, M. Eubanks, T. Y. Chen, H. Kucharek, P. Kollmann, M. Blanc, N. André, V. Génot, R. F. Wimmer-Schweingruber, S. Barabash, P. Brandt, R. McNutt
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
We highlight the importance of magnetic reconnection at the heliopause, both as one of the key processes driving the interaction between solar and interstellar media, but also as an element of the definition of the heliopause itself. We highlight the
Externí odkaz:
https://doaj.org/article/74b1ec0cba2c41169c70e9f88d31c752
Publikováno v:
The Astrophysical Journal Letters, Vol 944, Iss 2, p L47 (2023)
The Voyager 2 crossing of the termination shock indicated that most of the upstream energy from the thermal solar wind ions was transferred to pickup ions (PUIs) and other energetic particles downstream of the shock. We use hybrid simulations at the
Externí odkaz:
https://doaj.org/article/57dddc3ebfca471baf18b930fe8bc42b
Autor:
M. Kornbleuth, M. Opher, K. Dialynas, G. P. Zank, B. B. Wang, I. Baliukin, M. Gkioulidou, J. Giacalone, V. Izmodenov, J. M. Sokół, M. A. Dayeh
Publikováno v:
The Astrophysical Journal Letters, Vol 945, Iss 1, p L15 (2023)
The shape of the heliosphere is currently under active debate. Energetic neutral atoms (ENAs) offer the best method for investigating the global structure of the heliosphere. To date, the Interstellar Boundary Explorer (IBEX) and the Ion and Neutral
Externí odkaz:
https://doaj.org/article/2a91e2af2d724e8182e19c8c5056b2e9
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 4 (2023)
We compare hybrid (kinetic proton, fluid electron) and particle-in-cell (kinetic proton, kinetic electron) simulations of the solar wind termination shock with parameters similar to those observed by Voyager 2 during its crossing. The steady-state re
Externí odkaz:
https://doaj.org/article/6f5d4432d2bc4f2896ec8a59215f3fe1
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 1, p 66 (2023)
We study the transport of fast charged particles, such as galactic cosmic rays, in the very local interstellar medium (VLISM), which is currently being explored by the two Voyager space probes. Guided by the observations of magnetic fluctuations, the
Externí odkaz:
https://doaj.org/article/02d63bcfbe34451badeeb979945cb7f7