O VI and H_2 Lines in Sunspots
| dc.creator | Labrosse, Nicolas | |
| dc.creator | Morgan, Huw | |
| dc.creator | Habbal, Shadia Rifai | |
| dc.creator | Brown, Daniel | |
| dc.date | 2006-11-15 | |
| dc.date | 2007-04-01 | |
| dc.date.accessioned | 2026-07-07T07:54:35Z | |
| dc.date.available | 2026-07-07T07:54:35Z | |
| dc.description | Sunspots are locations on the Sun where unique atmospheric conditions prevail. In particular, the very low temperatures found above sunspots allow the emission of H_2 lines. In this study we are interested in the radiation emitted by sunspots in the O VI lines at 1031.96 A and 1037.60 A. We use SOHO/SUMER observations of a sunspot performed in March 1999 and investigate the interaction between the O VI lines and a H_2 line at 1031.87 A found in the Werner band. The unique features of sunspots atmospheres may very well have important implications regarding the illumination of coronal O+5 ions in the low corona, affecting our interpretation of Doppler dimming diagnostics. | |
| dc.description | 4 pages, 4 figures. In press,"Physics of Chromospheric Plasmas" (Coimbra), ASP 368, 247 (2007). Revised version matches published version. | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0611490 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0611490 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/126667 | |
| dc.subject | Astrophysics | |
| dc.subject | Space Physics | |
| dc.title | O VI and H_2 Lines in Sunspots | |
| dc.type | text |