Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Giannina Poletto"'
Autor:
Giannina Poletto
Publikováno v:
Journal of Advanced Research, Vol 4, Iss 3, Pp 215-220 (2013)
Fast solar wind has been recognized, about 40 years ago, to originate in polar coronal holes (CHs), that, since then, have been identified with sources of recurrent high speed wind streams. As of today, however, there is no general consensus about wh
Externí odkaz:
https://doaj.org/article/71c63bc0c2c64ff6bc4fc4e47f88c91b
Autor:
Giannina Poletto
Publikováno v:
Living Reviews in Solar Physics, Vol 12, p 7 (2015)
Polar plumes are thin long ray-like structures that project beyond the limb of the Sun polar regions, maintaining their identity over distances of several solar radii. Plumes have been first observed in white-light (WL) images of the Sun, but, with t
Externí odkaz:
https://doaj.org/article/03b69a672b294652b70844bd355c9e0d
Publikováno v:
Annales Geophysicae, Vol 26, Iss 10, Pp 3017-3024 (2008)
Annales Geophysicae, Vol 26, Pp 3017-3024 (2008)
Scopus-Elsevier
Annales Geophysicae, Vol 26, Pp 3017-3024 (2008)
Scopus-Elsevier
On 10–11 December 2005 a slow CME occurred in the Western Hemisphere in between two coronal streamers. SOHO/MDI magnetograms show a multipolar magnetic configuration at the photosphere: a complex of active regions located at the CME source and two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bde21b8baf0e421a0b58785c73a6f8b
https://www.ann-geophys.net/26/3017/2008/
https://www.ann-geophys.net/26/3017/2008/
Publikováno v:
Proceedings of the International Astronomical Union. 8:239-242
Blowout jets constitute about 50% of the total number of X-ray jets observed in polar coronal holes. In these events, the base magnetic loop is supposed to blow open in what is a scaled-down representation of two-ribbon flares that accompany major co
Autor:
L. Zangrilli, Giannina Poletto
We have shown previously that SOHO/UVCS data allow us to detect active region (AR) outflows at coronal altitudes higher than those reached by other instrumentation. These outflows are thought to be a component of the slow solar wind. Our purpose is t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54e9eacf5919752bd2131fd075ed43c8
http://hdl.handle.net/20.500.12386/29809
http://hdl.handle.net/20.500.12386/29809
Publikováno v:
Annales Geophysicae, Vol 27, Pp 3841-3851 (2009)
Annales Geophysicae, Vol 27, Iss 10, Pp 3841-3851 (2009)
Annales Geophysicae, Vol 27, Iss 10, Pp 3841-3851 (2009)
On 9 May 2007 a prominence eruption occurred at the West limb. Remarkably, the event was observed by the STEREO/EUVI telescopes and by the HINODE/EIS and SOHO/UVCS spectrometers. We present results from all these instruments. High-cadence (~37 s) dat
Publikováno v:
Astronomy & Astrophysics. 506:901-911
Context. The relation between current sheets (CSs) associated with flares, revealed by characteristic radio signatures, and current sheets associated with coronal mass ejections (CMEs), detected in coronal ultraviolet (UV) and white light data, has n
Publikováno v:
Annales Geophysicae, Vol 26, Iss 10, Pp 3067-3075 (2008)
Scopus-Elsevier
Annales Geophysicae, Vol 26, Pp 3067-3075 (2008)
Scopus-Elsevier
Annales Geophysicae, Vol 26, Pp 3067-3075 (2008)
This paper aims at studying reconnection occurring in the aftermath of the 28 May 2004, CME, first imaged by the LASCO (Large Angle and Spectrometric Coronagraph) C2 at 11:06 UT. The CME was observed in White Light and UV radiation: images acquired b
Publikováno v:
The Astrophysical Journal. 677:L137-L140
The occurrence of f−1 noise in interplanetary magnetic fields (in the 1 × 10−5 to 1 × 10−4 Hz band) and other plasma parameters has now been known for about 20 years and has been recently identified also in the photospheric magnetic fields. H
Publikováno v:
Planetary and Space Science. 55:1021-1030
In the last 10 years more than 1000 sungrazing comets have been discovered by the LASCO coronagraphs aboard SOHO the spacecraft; from this huge amount of data it has been possible to study the common origin of these comets and to explain some of the