Zobrazeno 1 - 10
of 154
pro vyhledávání: '"Viggo Hansteen"'
Autor:
Janne M Hilde, Jonny Hisdal, Ingunn Skjørten, Viggo Hansteen, Morten N Melsom, Ole J Grøtta, Milada C Småstuen, Ingebjørg Seljeflot, Harald Arnesen, Sjur Humerfelt, Kjetil Steine
Publikováno v:
PLoS ONE, Vol 15, Iss 7, p e0235075 (2020)
ObjectivesWe aimed to assess prevalence of left ventricular (LV) systolic and diastolic function in stable cohort of COPD patients, where LV disease had been thoroughly excluded in advance.Methods100 COPD outpatients in GOLD II-IV and 34 controls wer
Externí odkaz:
https://doaj.org/article/8314b00c33d945668efad8f60a0d90d4
Publikováno v:
Annual Review of Astronomy and Astrophysics. 57:189-226
The solar chromosphere forms a crucial, yet complex and until recently poorly understood, interface between the solar photosphere and the heliosphere. ▪ Advances in high-resolution instrumentation, adaptive optics, image reconstruction techniques,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5754f0aff2dc0381d1b72f564adb2d6
https://doi.org/10.1146/annurev-astro-081817-052044
https://doi.org/10.1146/annurev-astro-081817-052044
Autor:
Paola Testa, Patrick Antolin, Daniel Nóbrega-Siverio, Wei Liu, Adam F. Kowalski, Charles C. Kankelborg, Vanessa Polito, Bart De Pontieu, Viggo Hansteen, Mats Carlsson, Katharine K. Reeves, Adrian N. Daw, Scott W. McIntosh, Juan Martinez-Sykora
The Interface Region Imaging Spectrograph (IRIS) has been obtaining near- and far-ultraviolet images and spectra of the solar atmosphere since July 2013. The unique combination of near and far-ultraviolet spectra and images at subarcsecond resolution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1011024e08bef32cae15f29c1624bf05
Autor:
Viggo Hansteen, Sven Wedemeyer, Alberto Sainz Dalda, Bart De Pontieu, T. S. Bastian, Jaime de la Cruz Rodríguez, Shahin Jafarzadeh, Juan Martinez-Sykora, Georgios Chintzoglou, Mikolaj Szydlarski
Publikováno v:
The Astrophysical Journal
We present observations of the solar chromosphere obtained simultaneously with the Atacama Large Millimeter/submillimeter Array (ALMA) and the Interface Region Imaging Spectrograph (IRIS). The observatories targeted a chromospheric plage region of wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33ce523d23fa589fcf6f47a55c0f995d
Autor:
Tine Libbrecht, Johan Pires Bjørgen, Jorrit Leenaarts, Jayant Joshi, Viggo Hansteen, Jaime de la Cruz Rodríguez
Aims. We aim to explain line formation of He I D3 and He I 10830 {\AA} in small-scale reconnection events. Methods. We make use of a simulated Ellerman bomb (EB), present in a Bifrost-generated radiative Magnetohydrodynamics (rMHD) snapshot. The resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79d4f8bd0ec0df1bed6916da4f200b89
http://arxiv.org/abs/2010.15946
http://arxiv.org/abs/2010.15946
The solar atmosphere is composed of many species which are populated at different ionization and excitation levels. The upper chromosphere, transition region, and corona are nearly collisionless. Consequently, slippage between, for instance, ions and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::580680ffddff7110bd4692c73a6f0a26
http://arxiv.org/abs/2008.00069
http://arxiv.org/abs/2008.00069
Autor:
P. Schlatter, Craig DeForest, A. H. Gabriel, M. Anderson, S. Meining, Richard A. Harrison, Eckart Marsch, C. Tamiatto, Udo Schühle, S. Guest, David R. Williams, C. Mercier, G. Del Zanna, Sami K. Solanki, Martin E. Caldwell, S. Tustain, R. Speight, Stein Vidar Hagfors Haugan, Gareth J. Marshall, J. Davenne, Robert F. Wimmer-Schweingruber, Donald M. Hassler, Karine Bocchialini, D. Drummond, C. Dumesnil, B. Borgo, J. Dubau, D. Kouliche, M. Gyo, Luca Teriaca, Werner Curdt, F. Baudin, Eric Buchlin, J. Barbay, G. Burton, C. Howe, A. Philippon, Jean-Claude Vial, Miho Janvier, Roman Klein, S. Parenti, Daniel Pfiffner, Hardi Peter, Joseph M. Davila, Sarah A. Matthews, Ian Tosh, T. Grundy, K. Rogers, B. Walls, S. Woodward, N. Szwec, A. Marshall, Mats Carlsson, N. Waltham, Werner Schmutz, Paul Eccleston, R. Aznar Cuadrado, T. Fredvik, Andrzej Fludra, Douglas Griffin, C. Sawyer, S. Caminade, S. Koller, Peter R. Young, G. Dunn, S. Beardsley, Viggo Hansteen, C. Pastor-Santos, G. Munro, T. Morse, A. Richards, William T. Thompson, A. De Groof, M. Haberreiter, Therese A. Kucera, C. McQuirk, A. Giunta, Alexander Gottwald, M. Spescha, F. Auchere, A. Pacros, B. Shaughnessy, N. Morris, D. Bruzzi, Sunil Sidher, Daniel Müller, P. Phelan, V. Büchel, T. Appourchaux
The Spectral Imaging of the Coronal Environment (SPICE) instrument is a high-resolution imaging spectrometer operating at extreme ultraviolet (EUV) wavelengths. In this paper, we present the concept, design, and pre-launch performance of this facilit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f64f6c52fc9a853c6888a7aebd29f4e6
http://hdl.handle.net/10852/81980
http://hdl.handle.net/10852/81980
Autor:
Adrian N. Daw, Patrick Antolin, Juan Martinez-Sykora, Amy R. Winebarger, Bart De Pontieu, Mark C. M. Cheung, Paola Testa, Viggo Hansteen
The Multi-slit Solar Explorer (MUSE) is a proposed mission aimed at understanding the physical mechanisms driving the heating of the solar corona and the eruptions that are at the foundation of space weather. MUSE contains two instruments, a multi-sl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba9bf7b39056216c5c2c00844bd522f0
https://nrl.northumbria.ac.uk/id/eprint/44135/1/De_Pontieu_2020_ApJ_888_3.pdf
https://nrl.northumbria.ac.uk/id/eprint/44135/1/De_Pontieu_2020_ApJ_888_3.pdf
Autor:
Jayant Joshi, Daniel Nóbrega-Siverio, Vasco Manuel de Jorge Henriques, Clara Froment, H. Skogsrud, Ada Ortiz, Göran B. Scharmer, Eamon Scullion, C. Quintero Noda, Milan Gošić, Georgios Chintzoglou, Mats Carlsson, R. Timmons, Lucia Kleint, Pia Zacharias, Tiago M. D. Pereira, T. Leifsen, M. M. Woods, Viggo Hansteen, Mikolaj Szydlarski, Petra Kohutova, Juan Martinez-Sykora, Gregal J. M. Vissers, Souvik Bose, Ainar Drews, David Graham, Shahin Jafarzadeh, A. Sainz Dalda, D. Schmit, A. Popovas, L. Rouppe van der Voort, J. de la Cruz Rodríguez, B. De Pontieu
Publikováno v:
Astronomy & Astrophysics
NASA's Interface Region Imaging Spectrograph (IRIS) provides high resolution observations of the solar atmosphere through UV spectroscopy and imaging. Since the launch of IRIS in June 2013, we have conducted systematic observation campaigns in coordi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc9acd3f7a018f7c6cd656cfba6b5ad9
Autor:
Feng Chen, Boris V. Gudiksen, Mats Carlsson, B. De Pontieu, Marc L. DeRosa, A. Sainz Dalda, Mark C. M. Cheung, Viggo Hansteen, Matthias Rempel, Georgios Chintzoglou, Scott W. McIntosh, Juan Martinez-Sykora, Paola Testa, A. V. Malanushenko
Publikováno v:
Nature Astronomy. 3:160-166
Solar and stellar flares are the most intense emitters of X-rays and extreme ultraviolet radiation in planetary systems1,2. On the Sun, strong flares are usually found in newly emerging sunspot regions3. The emergence of these magnetic sunspot groups
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::488da5744485843a85917b569861b5bd
https://doi.org/10.1038/s41550-018-0629-3
https://doi.org/10.1038/s41550-018-0629-3