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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
2004
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=56843113 |
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| _version_ | 1866558589917724672 |
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| author | Ernesto R. Rodríguez Flores |
| author_facet | Ernesto R. Rodríguez Flores |
| contents | Time evolution of fine structures of a main sunspot in the SD108 and SD284 groups Ernesto R. Rodríguez Flores Rafael Gámez Díaz Ramón E. Rodríguez Taboada Ciencias de la Tierra sunspots umbral dots umbral nuclei penumbral filaments Photoheliograms taken at the Pamir Mountain Station (spatial resolution 0.3 arcsec) centered on 650 nm with a 40 nmbandwidth are used to obtain a standardized sequence of images for the dynamical study of some umbra and penumbra details ofthe main sunspot.Our images show, through visual inspection, the presence of bright and dark filaments in the penumbra. However, a clearindication of two distinct photometric levels was not found. A temporal variation of the characteristic penumbra intensity valuewas detected, which will be investigated later. Umbral dots and nuclei were detected and their spatial distributions were analyzed.A characteristic value for the umbral dots diameter was obtained. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843113 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_56843113 |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Time evolution of fine structures of a main sunspot in the SD108 and SD284 groups Ernesto R. Rodríguez Flores Ciencias de la Tierra sunspots umbral dots umbral nuclei penumbral filaments Time evolution of fine structures of a main sunspot in the SD108 and SD284 groups Ernesto R. Rodríguez Flores Rafael Gámez Díaz Ramón E. Rodríguez Taboada Ciencias de la Tierra sunspots umbral dots umbral nuclei penumbral filaments Photoheliograms taken at the Pamir Mountain Station (spatial resolution 0.3 arcsec) centered on 650 nm with a 40 nmbandwidth are used to obtain a standardized sequence of images for the dynamical study of some umbra and penumbra details ofthe main sunspot.Our images show, through visual inspection, the presence of bright and dark filaments in the penumbra. However, a clearindication of two distinct photometric levels was not found. A temporal variation of the characteristic penumbra intensity valuewas detected, which will be investigated later. Umbral dots and nuclei were detected and their spatial distributions were analyzed.A characteristic value for the umbral dots diameter was obtained. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843113 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 | Time evolution of fine structures of a main sunspot in the SD108 and SD284 groups |
| topic | Ciencias de la Tierra sunspots umbral dots umbral nuclei penumbral filaments |
| url | https://www.redalyc.org/articulo.oa?id=56843113 |