Zobrazeno 1 - 10
of 195
pro vyhledávání: '"A. Gordon Emslie"'
Autor:
Richard N. Henriksen, A. Gordon Emslie
Publikováno v:
Astronomy, Vol 3, Iss 3, Pp 255-274 (2024)
We embed an object with a singular horizon structure, reminiscent of (but fundamentally different from, except in a limiting case) a black hole event horizon, in an expanding, spherically symmetric, homogeneous, Universe that has a positive cosmologi
Externí odkaz:
https://doaj.org/article/ef25677ea79c45ceae98b86c387e7d4c
Autor:
Francesco Azzollini, A. Gordon Emslie, Daniel L. Clarkson, Nicolina Chrysaphi, Eduard P. Kontar
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 72 (2024)
Radio signals propagating via the solar corona and solar wind are significantly affected by compressive waves, impacting the properties of solar bursts as well as sources viewed through the turbulent solar atmosphere. While static fluctuations scatte
Externí odkaz:
https://doaj.org/article/9100aca7096c44a2a3dcc75eefa8069d
Publikováno v:
The Astrophysical Journal Letters, Vol 947, Iss 1, p L13 (2023)
Solar flares are known to be prolific electron accelerators, yet identifying the mechanism(s) for such efficient electron acceleration in solar flare (and similar astrophysical settings) presents a major challenge. This is due in part to a lack of ob
Externí odkaz:
https://doaj.org/article/8ff36933591545ca8431812389206222
Autor:
Paolo Massa, A. Gordon Emslie
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
In this “Methods” paper, we investigate how to compress SDO/AIA data by transforming the AIA source maps into the Fourier domain at a limited set of spatial frequency points. Specifically, we show that compression factors of one order of magnitud
Externí odkaz:
https://doaj.org/article/ba424c39fb9546a78ed047f0d2924cc2
Autor:
Eduard P. Kontar, A. Gordon Emslie, Daniel L. Clarkson, Xingyao Chen, Nicolina Chrysaphi, Francesco Azzollini, Natasha L. S. Jeffrey, Mykola Gordovskyy
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 112 (2023)
Solar radio bursts are strongly affected by radio-wave scattering on density inhomogeneities, changing their observed time characteristics, sizes, and positions. The same turbulence causes angular broadening and scintillation of galactic and extragal
Externí odkaz:
https://doaj.org/article/a889556a2a57456fb956950067ea7522
Context. Extreme-ultraviolet (EUV) observations provide considerable insight into evolving physical conditions in the active solar atmosphere. For a prescribed density and temperature structure, it is straightforward to construct the corresponding di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8db4f7196c69c94cca63979ae081924
Autor:
A. Gordon Emslie, Stephen J. Bradshaw
We examine the temperature structure of static coronal active region loops in regimes where thermal conductive transport is driven by Coulomb collisions, by turbulent scattering, or by a combination of the two. (In the last case collisional scatterin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16914ff3ba585eb616ba6401404584ef
http://arxiv.org/abs/2210.01107
http://arxiv.org/abs/2210.01107
Akademický článek
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During solar flares plasma is typically heated to very high temperatures, and the resulting redistribution of energy via thermal conduction is a primary mechanism transporting energy throughout the flaring solar atmosphere. The thermal flux is usuall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e50332b4dd78bd3f115f7ddb61bdfbb
http://arxiv.org/abs/2204.11684
http://arxiv.org/abs/2204.11684