Výsledky vyhledávání - "David I. Pontin"

Akademický článek

A New Field Line Tracer for the Study of Coronal Magnetic Topologies

Autor: Valentin Aslanyan, Roger B. Scott, Chloe P. Wilkins, Karen A. Meyer, David I. Pontin, Anthony R. Yeates

Publikováno v: The Astrophysical Journal, Vol 971, Iss 2, p 137 (2024)

We present a new code for the tracing of magnetic field lines and calculation of related quantities such as the squashing factor in the solar corona. The Universal Fieldline Tracer ( UFiT ) is an open-source package that can currently take inputs dir

Externí odkaz: https://doaj.org/article/f776db2a5372472498ab33ebf940028e

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Akademický článek

Exact Nonlinear Decomposition of Ideal-MHD Waves Using Eigenenergies

Autor: Abbas Raboonik, Lucas A. Tarr, David I. Pontin

Publikováno v: The Astrophysical Journal, Vol 967, Iss 2, p 80 (2024)

In this paper, we introduce a new method for exact decomposition of propagating, nonlinear magnetohydrodynamic (MHD) disturbances into their component eigenenergies associated with the familiar slow, Alfvén, and fast wave eigenmodes, and the entropy

Externí odkaz: https://doaj.org/article/4531fc0e9ab2430fb054512c287f3c3d

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Akademický článek

2.5D Magnetohydrodynamic Simulation of the Formation and Evolution of Plasmoids in Coronal Current Sheets

Autor: Sripan Mondal, Abhishek K. Srivastava, David I. Pontin, Ding Yuan, Eric R. Priest

Publikováno v: The Astrophysical Journal, Vol 963, Iss 2, p 139 (2024)

In the present paper, using MPI-AMRVAC , we perform a 2.5D numerical magnetohydrodynamic simulation of the dynamics and associated thermodynamical evolution of an initially force-free Harris current sheet subjected to an external velocity perturbatio

Externí odkaz: https://doaj.org/article/553369416eb94409b0814ac7b36231eb

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Parallel Plasma Loops and the Energization of the Solar Corona

Autor: Hardi Peter, Lakshmi Pradeep Chitta, Feng Chen, David I. Pontin, Amy R. Winebarger, Leon Golub, Sabrina L. Savage, Laurel A. Rachmeler, Ken Kobayashi, David H. Brooks, Jonathan W. Cirtain, Bart De Pontieu, David E. McKenzie, Richard J. Morton, Paola Testa, Sanjiv K. Tiwari, Robert W. Walsh, Harry P. Warren

The outer atmosphere of the Sun is composed of plasma heated to temperatures well in excess of the visible surface. We investigate short cool and warm (
Accepted for publication in the Astrophysical Journal, 24 pages, 18 figures

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5e542037fe0439fb65797caee7fe811
http://hdl.handle.net/10852/97372

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Magnetic reconnections as the underlying cause of spontaneous generation and annihilation of three-dimensional magnetic nulls

Autor: Yogesh Kumar Maurya, Ramit Bhattacharyya, David I. Pontin

Publikováno v: Physics of Plasmas. 30:022901

Three-dimensional (3D) magnetic nulls are preferential sites for triggering solar coronal transients. Although these nulls are abundant in the solar atmosphere, their generation is yet to be thoroughly explored. This paper explores the mechanism of n

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6257d04c1433ce6c0855b29b767b229
https://doi.org/10.1063/5.0107601

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Spatially Separated Electron and Proton Beams in a Simulated Solar Coronal Jet

Autor: Ross Pallister, Peter F. Wyper, David I. Pontin, C. Richard DeVore, Federica Chiti

Publikováno v: The astrophysical journal, 2021, Vol.923(2), pp.163 [Peer Reviewed Journal]

Magnetic reconnection is widely accepted to be a major contributor to nonthermal particle acceleration in the solar atmosphere. In this paper we investigate particle acceleration during the impulsive phase of a coronal jet, which involves bursty reco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::213bcb979ac43b45fc41d21afa372447
https://doi.org/10.3847/1538-4357/ac2e6d

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