تقرير
Detection of the linearly polarised spectrum of the red supergiant star alpha Ori
| العنوان: | Detection of the linearly polarised spectrum of the red supergiant star alpha Ori |
|---|---|
| المؤلفون: | Tessore, Benjamin, Lòpez-Ariste, Arturo, Mathias, Philippe, Lèbre, Agnès, Morin, Julien, Josselin, Eric |
| سنة النشر: | 2017 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | In the solar limb, linear polarisation is due to anisotropy of the radiation field induced by limb darkening. It is maximal when it is seen parallel to the limb and it vanishes when it is integrated over the spherically-symmetric solar disk. Therefore for distant stars, that present spherical symmetry, linear polarisation signatures are very difficult to observe. However strong linear polarisation features have been reported in the prototypical red supergiant star alpha Ori (Betelgeuse). With an analytical model we propose to explain them. Comment: Conference proceeding of the 8$^{th}$ Solar Polarization Workshop |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1702.02002 |
| رقم الأكسشن: | edsarx.1702.02002 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |