Now showing items 964-983 of 1243

  • Ruud, Tone Melvær; Fuskeland, Unni; Wehus, Ingunn Kathrine; Vidal, M.; Araujo, D.; Bischoff, C.; Buder, I.; Chinone, Y.; Cleary, K.; Dumoulin, R. N.; Kusaka, A.; Monsalve, R.; Næss, Sigurd Kirkevold; Newburgh, L. B.; Reeves, R. A.; Zwart, J. T. L.; Bronfman, L.; Davies, R. D.; Davis, R.; Dickinson, C.; Eriksen, Hans Kristian Kamfjord; Gaier, T.; Gundersen, J. O.; Hasegawa, M.; Hazumi, M.; Huffenberger, K. M.; Jones, M. E.; Lawrence, C. R.; Leitch, E. M.; Limon, M.; Miller, A. D.; Pearson, T. J.; Piccirillo, L.; Radford, S. J. E.; Readhead, A. C. S.; Samtleben, D.; Seiffert, M.; Shepherd, M. C.; Staggs, S. T.; Tajima, O.; Thompson, K. L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present polarization observations of two Galactic plane fields centered on Galactic coordinates (l, b) = (0°, 0°) and (329°, 0°) at both Q (43 GHz) and W bands (95 GHz), covering between 301 and 539 square degrees ...
  • Saxrud, Svein Rune (Master thesis / Masteroppgave, 2011)
    The standard model of cosmology has proven to be a great success. Through measurements of the Cosmic Microwave Background radiation, cosmologists have been able to constrain parameters such as the age and geometry of the ...
  • Ledvina, Vincent E.; Kazachenko, Maria D.; Criscuoli, Serena; Tilipman, Dennis; Ermolli, Ilaria; Falco, Mariachiara; Guglielmino, Salvatore; Jafarzadeh, Shahin; Rouppe van der Voort, Luc; Zuccarello, Francesca (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We analyzed spectropolarimetric data from the Swedish 1 m Solar Telescope to investigate the physical properties of small-scale magnetic cancellations in the quiet Sun photosphere. Specifically, we looked at the full Stokes ...
  • He, Wen; Hu, Qiang; Jiang, Chaowei; Qiu, Jiong; Prasad, Avijeet (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    In order to bridge the gap between heliospheric and solar observations of coronal mass ejections (CMEs), one of the key steps is to improve the understanding of their corresponding magnetic structures like the magnetic ...
  • Mauland, Renate (Master thesis / Masteroppgave, 2019)
    Investigating properties of vortices formed in the superfluid dark matter picture, along with the parameter space of the model.
  • Rachmeler, Laurel A.; Trujillo Bueno, Javier; McKenzie, D.E.; Ishikawa, R.; Auchère, F.; Kobayashi, K.; Kano, R.; Okamoto, T.J.; Bethge, C.W.; Song, D.; Alsina Ballester, E.; Belluzzi, L.; del Pino Alemán, T.; Asenio Ramos, A.; Yoshida, M.; Shimizu, T.; Winebarger, A.; Kobelski, A.R.; Vigil, G.D.; De Pontieu, Bart Walter; Narukage, N.; Kubo, M.; Sakao, T.; Hara, H.; Suematsu, Y.; Štěpán, J.; Carlsson, Mats; Leenaarts, Jorrit (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The CLASP2 (Chromospheric LAyer Spectro-Polarimeter 2) sounding rocket mission was launched on 2019 April 11. CLASP2 measured the four Stokes parameters of the Mg ii h and k spectral region ...
  • Robinson, Rebecca Anne; Aulanier, Guillaume; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Context. Low-altitude nanoflares are among the candidates for atmospheric heating in the quiet Sun’s corona. Low-altitude twisted magnetic fields may be involved in such events, as they are in larger flares. But for ...
  • Mas Ribas, Lluis (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We report on quasar outflow properties revealed by analyzing more than 60 composite outflow spectra built from ~60,000 C iv absorption troughs in the SDSS-III/BOSS DR12QBAL catalog. We assess the dependences of the equivalent ...
  • Hong, Jie; Carlsson, Mats; Ding, M. D. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Ellerman bombs (EBs) are brightenings in the Hα line wings that are believed to be caused by magnetic reconnection in the lower atmosphere. To study the response and evolution of the chromospheric line profiles, we perform ...
  • Osborne, Christopher M. J.; Armstrong, John A.; Fletcher, Lyndsay (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    During a solar flare, it is believed that reconnection takes place in the corona followed by fast energy transport to the chromosphere. The resulting intense heating strongly disturbs the chromospheric structure and induces ...
  • Lörinčík, Juraj; Polito, Vanessa; De Pontieu, Bart Walter; Yu, Sijie; Freij, Nabil (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    We report on observations of highly-varying Si IV 1402.77 Å line profiles observed with the Interface Region Imaging Spectrograph (IRIS) during the M-class flare from 18 January 2022 at an unprecedented 0.8 s cadence. ...
  • Wiseman, Philip; Sullivan, Mark; Smith, M.; Frohmaier, Christopher; Vincenzi, Maria; Graur, Or; Popovic, B.; Armstrong, P.; Brout, D.; Davis, Tamara M.; Galbany, Lluís; Hinton, Samuel R.; Kelsey, Lisa; Kessler, R.; Lidman, Chris; Möller, A.; Nichol, Robert C.; Rose, B.; Scolnic, Daniel; Toy, Michael D.; Zontou, Z.; Asorey, Jacobo; Carollo, Daniela; Glazebrook, K.; Lewis, Geraint F.; Tucker, B. E.; Abbott, Timothy M. C.; Aguena, Michel; Allam, Sahar; Andrade-Oliveira, F.; Annis, James; Bacon, D.; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David L.; Carnero Rosell, Aurelio; Carrasco Kind, Matias; Carretero, Jorge; Costanzi, Matteo; da Costa, Luiz N.; Pereira, Maria Elidaiana da Silva; Desai, S.; Diehl, Herman T.; Doel, Peter; Everett, S.; Ferrero, Ismael; Flaugher, Brenna; Fosalba, Pablo; Frieman, Josh; García-Bellido, Juan; Gaztañaga, Enrique; Giannantonio, Tommaso; Gruen, Daniel; Gruendl, Robert A.; Gschwend, Julia; Gutierrez, G.; Hollowood, Devon L.; Honscheid, Klaus; Hoyle, B.; James, David J.; Krause, Elisabeth; Kuehn, Kyler; Kuropatkin, Nikolay; Maia, Marcio A. G.; Marshall, Jennifer L.; Martini, Paul; Menanteau, Felipe; Miquel, Ramon; Morgan, R.; Ogando, Ricardo L. C.; Palmese, Antonella; Paz-Chinchón, Francisco; Petravick, D.; Pieres, Adriano; Plazas Malagón, Andrés A.; Romer, A. K.; Sanchez, E.; Scarpine, Vic; Schubnell, M.; Serrano, Santiago; Sevilla-Noarbe, Ignacio; Soares-Santos, Marcelle; Suchyta, Eric; Swanson, Molly E. C.; Tarlé, Gregory; To, Chun-Hao; Varga, Tamas Norbert; Walker, Alistair R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    We use a sample of 809 photometrically classified Type Ia supernovae (SNe Ia) discovered by the Dark Energy Survey (DES) along with 40 415 field galaxies to calculate the rate of SNe Ia per galaxy in the redshift range 0.2 ...
  • Toy, M.; Wiseman, P.; Sullivan, M.; Frohmaier, C.; Graur, O.; Palmese, A.; Popovic, B.; Davis, T.M.; Galbany, L.; Kelsey, L.; Lidman, C.; Scolnic, D.; Allam, S.; Desai, S.; Abbott, T.M.C.; Aguena, M.; Alves, O.; Annis, J.; Bacon, D.; Bertin, E.; Brooks, D.; Burke, D.L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Castander, F.J.; Conselice, C.; da Costa, L.N.; Pereira, M.E.S.; De Vicente, J.; Diehl, H.T.; Doel, P.; Everett, S.; Ferrero, Ismael; Frieman, J.; Gerdes, D.W.; Gruen, D.; Gruendl, R.A.; Gutierrez, G.; Hinton, S.R.; Hollowood, D.L.; Honscheid, K.; James, D.J.; Kuehn, K.; Kuropatkin, N.; Marshall, J.L.; Melchior, P.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Pieres, A.; Plazas Malagón, A.A.; Romer, A.K.; Sanchez, E.; Scarpine, V.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Tarle, G.; To, C.; Weaverdyck, N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
  • Rouppe, Van Der Voort Luc; Rutten, Robert; Vissers, Gregal Joan Maria (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    We describe a new quiet-Sun phenomenon which we call quiet-Sun Ellerman-like brightenings (QSEB). QSEBs are similar to Ellerman bombs (EB) in some respects but differ significantly in others. EBs are transient brightenings ...
  • Huse, Tor Helge (Master thesis / Hovedoppgave, 2005)
    During inflation, the potential of the inflaton scalar field $\phi$, drives the exponential expansion of the Universe. The nature of the inflaton potential is presently unknown, but one hopes to learn more from observations ...
  • Sainz Dalda, Alberto; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Observations by the Interface Region Imaging Spectrograph (IRIS) of the Mg ii h & k spectral lines have provided a new diagnostic window toward knowledge of the complex physical conditions in the ...
  • Sainz Dalda, Alberto; de la Cruz Rodriguez, Jaime; De Pontieu, Bart Walter; Gošić, Milan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Inversion codes allow the reconstruction of a model atmosphere from observations. With the inclusion of optically thick lines that form in the solar chromosphere, such modeling is computationally very expensive because a ...
  • Barve, Christopher Backløf (Master thesis / Masteroppgave, 2016)
    Recent observations support a significantly reduced visibility of Lyman-α (Lyα) flux from galaxies at redshifts z > 6. This is surprising considering that the visibility of Lyα flux has been observed to increase up towards ...
  • Groenewegen, Martin; Saberi, Maryam (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Carbon monoxide (CO) is the most abundant molecule after molecular hydrogen and is important for the chemistry in circumstellar envelopes around evolved stars. When modelling the strength and shape of molecular lines, the ...
  • Baumschlager, Bernhard; Hensler, Gerhard; Steyrleithner, Patrick; Recchi, Simone (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We present, for the first time, numerical simulations of young tidal dwarf galaxies (TDGs), including a self-consistent treatment of the tidal arm in which they are embedded. Thereby, we do not rely on idealized initial ...