Zobrazeno 1 - 10
of 74
pro vyhledávání: '"J. P. Wülser"'
Autor:
N. Schanche, C. A. Madsen, Steven H. Saar, J. Prchlik, Paul Bryans, R. Timmons, S. McKillop, P. Boerner, Charles C. Kankelborg, Samuel L. Freeland, B. De Pontieu, J. P. Wülser, M. Wiesmann, S. Jaeggli, S. Brannon, Wei Liu, Theodore D. Tarbell, Paola Testa
Publikováno v:
Solar Physics. 293
This work is supported by NASA contract NNG09FA40C (IRIS). The Interface Region Imaging Spectrograph (IRIS) is a NASA small explorer mission that provides high-resolution spectra and images of the Sun in the 133 – 141 nm and 278 – 283 nm waveleng
Publikováno v:
Solar Physics. 293
Using the 2016 Mercury transit of the Sun, we characterize on orbit spatial point spread functions (PSFs) for the Near- (NUV) and Far- (FUV) Ultra-Violet spectrograph channels of NASA’s Interface Region Imaging Spectrograph (IRIS). A semi-blind Ric
Autor:
J. P. Wülser, Nariaki Nitta, James R. Lemen, Dominic M. Zarro, Markus J. Aschwanden, Samuel L. Freeland
Publikováno v:
Solar Physics. 289:1257-1277
We study the association of solar flares with coronal mass ejections (CMEs) during the deep, extended solar minimum of 2007-2009, using extreme-ultraviolet (EUV) and white-light (coronagraph) images from the {\it Solar Terrestrial Relations Observato
Autor:
Markus J. Aschwanden, J. P. Wülser
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 73:1082-1095
We review data analysis and physical modeling related to the 3-D reconstruction of active regions in the solar corona, using stereoscopic image pairs from the STEREO/EUVI instrument. This includes the 3-D geometry of coronal loops (with measurements
Autor:
J.-P. Wülser, O. Podladchikova, Angelos Vourlidas, Spiros Patsourakos, R. A. M. Van der Linden
Publikováno v:
The Astrophysical Journal. 709:369-376
The Solar Terrestrial Relations Observatory EUV telescopes have uncovered small-scale eruptive events, tentatively referred to as 'mini-CMEs' because they exhibit morphologies similar to large-scale coronal mass ejections (CMEs). Coronal waves and wi
Publikováno v:
Solar Physics. 259:1-11
The Solar Terrestrial Relations Observatory (STEREO) provides the first opportunity to triangulate the three-dimensional coordinates of active region loops simultaneously from two different vantage points in space. Three-dimensional coordinates of th
First Three‐Dimensional Reconstructions of Coronal Loops with theSTEREO AandBSpacecraft. I. Geometry
Publikováno v:
The Astrophysical Journal. 679:827-842
We present one of the first triangulations and 3D reconstructions of coronal loops, using the EUVI telescopes of the two STEREO A and B spacecraft. The first triangulation of coronal loops was performed in an active region, observed with STEREO A and
Autor:
Paola Testa, Juan Martinez-Sykora, James R. Lemen, Theodore D. Tarbell, Sarah A. Jaeggli, Alan M. Title, Neal E. Hurlburt, J. P. Wülser, Mats Carlsson, Viggo Hansteen, Katharine K. Reeves, Charles C. Kankelborg, B. De Pontieu, Tiago M. D. Pereira, Lucia Kleint, Hui Tian, Leon Golub, S. McKillop, P. Boerner, S. H. Saar
Solar spicules have eluded modelers and observers for decades. Since the discovery of the more energetic type II, spicules have become a heated topic but their contribution to the energy balance of the low solar atmosphere remains unknown. Here we gi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd76cf3e1a52812a778eebfc680e16b5
http://hdl.handle.net/10852/56957
http://hdl.handle.net/10852/56957
Publikováno v:
Solar Physics. 180:361-375
The 20 August 1992 flare around 14:28 UT was observed in Hα, He and Ca ii H with the imaging spectrographs at Locarno-Monti, Switzerland, with the radiotelescopes in Bern, and in soft and hard X-rays by the Yohkoh satellite. In this paper we discuss
Publikováno v:
The Astrophysical Journal. 482:490-497
We examine the spatial relationship between solar hard X-ray sources observed with the Hard X-Ray Telescope aboard Yohkoh and photospheric electric currents observed at Mees Solar Observatory. In 1993, Canfield et al. concluded that energetic electro