A simple model for the stellar analogy of compact solar flares

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We have developed a simple point'' model to describe the average thermodynamical properties of a compact flare loop as a function of time during the flare decay phase. The model includes thermal conduction, chromospheric evaporation, and radiative losses; moreover, it assumes lateral (gas + magnetic) pressure balance with the background corona at all times. For the case of a low-{beta} plasma (rigid flux tube), detailed 1-D hydrodynamical simulations are available in the literature for comparison; we show that the temporal variation of average loop properties predicted by the point model are in good agreement with these numerical simulations for a … continued below

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4 pages

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Kopp, R.A.; Poletto, G. (Los Alamos National Lab., NM (USA) & Osservatorio Astrofisico di Arcetri, Florence (Italy)) January 1, 1989.

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Description

We have developed a simple point'' model to describe the average thermodynamical properties of a compact flare loop as a function of time during the flare decay phase. The model includes thermal conduction, chromospheric evaporation, and radiative losses; moreover, it assumes lateral (gas + magnetic) pressure balance with the background corona at all times. For the case of a low-{beta} plasma (rigid flux tube), detailed 1-D hydrodynamical simulations are available in the literature for comparison; we show that the temporal variation of average loop properties predicted by the point model are in good agreement with these numerical simulations for a loop with the same energy input. 1 ref., 1 fig.

Physical Description

4 pages

Notes

NTIS, PC A02/MF A01; OSTI; INIS; GPO Dep.

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  • 6. Cambridge workshop on cool stars, stellar systems and the sun, Seattle, WA (USA), 11-14 Sep 1989

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  • Other: DE90003215
  • Report No.: LA-UR-89-3788
  • Report No.: CONF-8909276--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5356808
  • Archival Resource Key: ark:/67531/metadc1069947

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1989

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • July 16, 2019, 8:21 p.m.

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Kopp, R.A.; Poletto, G. (Los Alamos National Lab., NM (USA) & Osservatorio Astrofisico di Arcetri, Florence (Italy)). A simple model for the stellar analogy of compact solar flares, article, January 1, 1989; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1069947/: accessed April 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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