Numerical simulation of the cooling of a solar flare
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2004
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| _version_ | 1876466134442573824 |
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| author | César A. Mendoza Briceño |
| author_facet | César A. Mendoza Briceño |
| contents | Numerical simulation of the cooling of a solar flare César A. Mendoza Briceño Leonardo Sigalotti Neyda Y. Añez Parra Ciencias de la Tierra Solar flare hydrodynamics Sun atmosphere A one-dimensional hydrodynamics code is used to study the cooling of solar flares. The cooling of the flux tube is calculatedfor the case in which the atmosphere is initially in thermal equilibrium with a maximum temperature of about 107 K. As the systemcools, the evolution of the temperature, density, and velocity is calculated as a function of height for different lengths of the loop.We use the cooling function proposed by Hildner (1974), extended to include temperatures lower than 104 K and the Bremsstrahlungeffect for values higher than 106 K. It is found that the cooling time increases as the length of the loop is increased. Furthermore,if a spatially-varying energy source is allowed along the loop length, the cooling time differs from the case with no externalheating. In particular, it is seen to decrease as the input heating concentrates at the base of the loop. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843112 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.43 |
| format | Artículo científico |
| id | redalyc_56843112 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Numerical simulation of the cooling of a solar flare César A. Mendoza Briceño Ciencias de la Tierra Solar flare hydrodynamics Sun atmosphere Numerical simulation of the cooling of a solar flare César A. Mendoza Briceño Leonardo Sigalotti Neyda Y. Añez Parra Ciencias de la Tierra Solar flare hydrodynamics Sun atmosphere A one-dimensional hydrodynamics code is used to study the cooling of solar flares. The cooling of the flux tube is calculatedfor the case in which the atmosphere is initially in thermal equilibrium with a maximum temperature of about 107 K. As the systemcools, the evolution of the temperature, density, and velocity is calculated as a function of height for different lengths of the loop.We use the cooling function proposed by Hildner (1974), extended to include temperatures lower than 104 K and the Bremsstrahlungeffect for values higher than 106 K. It is found that the cooling time increases as the length of the loop is increased. Furthermore,if a spatially-varying energy source is allowed along the loop length, the cooling time differs from the case with no externalheating. In particular, it is seen to decrease as the input heating concentrates at the base of the loop. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843112 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.43 |
| title | Numerical simulation of the cooling of a solar flare |
| topic | Ciencias de la Tierra Solar flare hydrodynamics Sun atmosphere |
| url | https://www.redalyc.org/articulo.oa?id=56843112 |