Study on solar sources and polar cap absorption events recorded in Antarctica |
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| Authors: | L Perrone M Parisi A Meloni M Damasso M Galliani |
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| Institution: | 1. Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Geomagnetismo, Aeronomia e Geofisica Ambientale, Via di Vigna Murata 605, 00143 Roma, Italy;2. Dipartimento di Fisica, Università degli Studi di Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy |
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| Abstract: | Particularly intense events occurred on the Sun in a period around minimum of solar activity during cycle 23. We investigated the characteristics of September 2005 and December 2006 events and the properties of the correlated observations of ionospheric absorption, obtained by a 30 MHz riometer installed at Mario Zucchelli Station (MZS-Antarctica), and of geomagnetic activity recorded at Scott Base (Antarctica). Solar events are studied using the characteristics of CMEs measured with SoHO/LASCO coronagraphs and the temporal evolution of solar energetic protons in different energy ranges measured by GOES 11 spacecraft. |
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| Keywords: | Polar ionosphere Solar proton event Solar radiation Coronal mass ejection Geomagnetic storm Cosmic ray |
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