Now showing items 50-69 of 603

  • Archontis, Vasilis; Hansteen, Viggo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    We report on the formation of small solar flares produced by patchy magnetic reconnection between interacting magnetic loops. A three-dimensional (3D) magnetohydrodynamic (MHD) numerical experiment was performed, where a ...
  • vom Marttens, Rodrigo F.; Casarini, Luciano; Hipólito-Ricaldi, William S.; Zimdahl, Winfried (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    An interaction between dark matter and dark energy, proportional to the product of their energy densities, results in a scaling behavior of the ratio of these densities with respect to the scale factor of the Robertson-Walker ...
  • Bull, Philip James; Wehus, Ingunn Kathrine; Eriksen, Hans Kristian Kamfjord; Ferreira, Pedro G.; Fuskeland, Unni; Górski, Krzysztof M.; Jewell, J. B. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    In addition to primary fluctuations, cosmic microwave background (CMB) temperature maps contain a wealth of additional information in the form of secondary anisotropies. However, secondary effects that can be identified ...
  • Lia, Jiajia; Carlsson, Mats; Nelson, Chris J.; Erdélyi, Robert (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Context. Velocity or intensity swirls have now been shown to be widely present throughout the photosphere and chromosphere. It has been suggested that these events could contribute to the heating of the upper solar atmosphere, ...
  • Rubio da Costa, Fatima; Liu, Wei; Petrosian, Vahe; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Solar flares involve complex processes that are coupled and span a wide range of temporal, spatial, and energy scales. Modeling such processes self-consistently has been a challenge in the past. Here we present results ...
  • Riemer-Sørensen, Signe; Parkinson, D.; Davis, T. M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    We present the strongest current cosmological upper limit on the neutrino mass of ∑mν<0.18  eV (95% confidence). It is obtained by adding observations of the large-scale matter power spectrum from the WiggleZ Dark Energy ...
  • Schmit, D.; Sukhorukov, A. V.; De Pontieu, Bart Walter; Leenaarts, Jorrit; Bethge, C.; Winebarger, A.; Auchère, F.; Bando, T.; Ishikawa, R.; Kano, R.; Kobayashi, K.; Narukage, N.; Trujillo Bueno, J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The Chromospheric Lyman Alpha Spectropolarimeter (CLASP) observed the Sun in H i Lyα during a suborbital rocket flight on 2015 September 3. The Interface Region Imaging Telescope (IRIS) coordinated with the CLASP observations ...
  • Perrott, Y. C.; Olamaie, M.; Rumsey, C; Brown, M. L.; Feroz, F.; Grainge, K. J. B.; Hobson, M. P.; Lasenby, A. N.; MacTavish, C. J.; Pooley, G. G.; Saunders, R. D. E.; Schammel, M. P.; Scott, P. F.; Shimwell, T. W.; Titterington, D. J.; Waldram, E. M.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aussel, H; Barrena, R.; Bikmaev, I; Böhringer, H.; Burenin, R; Carvalho, P.; Chon, G.; Comis, B; Dahle, Håkon; Démoclès, J.; Douspis, M.; Harrison, D.; Hempel, A; Hurier, G.; Khamitov, I; Kneissl, R.; Macías-Pérez, J. F.; Melin, J.-B.; Pointecouteau, E.; Pratt, G. W.; Rubiño-Martín, J. A.; Stolyarov, V.; Sutton, D (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present observations and analysis of a sample of 123 galaxy clusters from the 2013 Planck catalogue of Sunyaev-Zel’dovich sources with the Arcminute Microkelvin Imager (AMI), a ground-based radio interferometer. AMI ...
  • Sokołowska, A.; Babul, A.; Mayer, L.; Shen, Sijing; Madau, Piero (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We use high-resolution cosmological hydrodynamical simulations of Milky-Way-sized galaxies with varying supernova feedback strengths and merger histories to investigate the formation of their gaseous halos and especially ...
  • Osnes, Andreas Nygård; Vartdal, Magnus; Omang, Marianne Gjestvold; Reif, Bjørn Anders Pettersson (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    We investigate the shock-induced flow through random particle arrays using particle-resolved Large Eddy Simulations for different incident shock wave Mach numbers, particle volume fractions and particle sizes. We analyze ...
  • Seljebotn, Dag Sverre (Doctoral thesis / Doktoravhandling, 2017)
  • Sekimoto, Yutaro; Ade, P; Arnold, K; Aumont, J; Austermann, J; Baccigalupi, C; Banday, A; Banerji, Ranajoy; Basak, S; Beckman, S; Bersanelli, M; Borrill, J; Boulanger, F; Brown, ML; Bucher, M; Calabrese, E; Challinor, A; Chinone, Y; Columbro, F; Cukierman, A; Curtis, D; de Bernardis, P; de Petris, M; Dobbs, M; Dotani, T; Duband, L; Ducout, A; Ebisawa, K; Elleflot, T; Eriksen, Hans Kristian Kamfjord; Errard, J; Flauger, R; Franceschet, C; Fuskeland, Unni; Ganga, K; Gao, RJ; Ghigna, T; Grain, J; Gruppuso, A; Halverson, N; Hargrave, P; Hasebe, T; Hasegawa, M; Hattori, M; Hazumi, M; Henrot-Versille, S; Hill, C; Hirota, Y; Hivon, E; Hoang, TD; Hubmayr, J; Ichiki, K; Imada, H; Ishino, H; Jaehnig, G; Kanai, H; Kashima, S; Kataoka, Y; Katayama, N; Kawasaki, T; Keskitalo, R; Kibayashi, A; Kikuchi, T; Kimura, K; Kisner, T; Kobayashi, Y; Kogiso, N; Kohri, K; Komatsu, E; Komatsu, K; Konishi, K; Krachmalnicoff, N; Kuo, LC; Kurinsky, N; Kushino, A; Lamagna, L; Lee, TA; Linder, E; Maffei, B; Maki, M; Mangilli, A; Martinez-Gonzalez, E; Masi, S; Matsumura, T; Mennella, A; Minami, Y; Mistuda, K; Molinari, D; Montier, L; Morgante, G; Mot, B; Murata, Y; Murphy, A; Nagai, M; Nagata, R; Nakamura, S; Namikawa, T; Natoli, P; Nishibori, T; Nishino, H; Noviello, F; O'Sullivan, C; Ochi, H; Ogawa, H; Ohsaki, H; Ohta, I; Okada, N; Patanchon, G; Piacentini, F; Pisano, G; Polenta, G; Poletti, D; Puglisi, G; Raum, C; Realini, S; Remazeilles, M; Sakurai, H; Sakurai, Y; Savini, G; Sherwin, B; Shinozaki, K; Shiraishi, M; Signorelli, G; Smecher, G; Stompor, R; Sugai, H; Sugiyama, S; Suzuki, A; Suzuki, J; Takaku, R; Takakura, H; Takakura, S; Taylor, E; Terao, Y; Thompson, KL; Thorne, B; Tomasi, M; Tomida, H; Trappe, N; Tristram, M; Tsuji, M; Tsujimoto, M; Uozumi, S; Utsunomiya, S; Vittorio, N; Watanabe, N; Wehus, Ingunn Kathrine; Westbrook, B; Winter, B; Yamamoto, R; Yamasaki, N; Yanagisawa, M; Yoshida, T; Yumoto, J; Zannoni, M; Zonca, A (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    LiteBIRD is a candidate for JAXA’s strategic large mission to observe the cosmic microwave background (CMB) polarization over the full sky at large angular scales. It is planned to be launched in the 2020s with an H3 launch ...
  • Rizzo, Luca Alberto; Mota, David; Valageas, Patrick (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Consistency relations of large-scale structures provide exact nonperturbative results for cross-correlations of cosmic fields in the squeezed limit. They only depend on the equivalence principle and the assumption of ...
  • Chisholm, J.; Rigby, J. R.; Bayliss, M.; Berg, D. A.; Dahle, Håkon; Gladders, M.; Sharon, K. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We infer the properties of massive star populations using the far-ultraviolet stellar continua of 61 star-forming galaxies: 42 at low redshift observed with the Hubble Space Telescope and 19 at z ~ 2 from the MegaSaura ...
  • Rezaei, M.; Malekjani, M.; Basilakos, S.; Mehrabi, A.; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • Grav, Bjarne (Master thesis / Masteroppgave, 2016)
    Several decades ago it was discovered that the outer layers of the Sun are much hotter than the photosphere. The mechanism or mechanisms heating the outer solar layers are not known, so this is known as the coronal heating ...
  • Auchère, Frédéric; Froment, Clara; Soubrie, Elie; Antolin, Patrick; Oliver, Ramon; Pelouze, Gabriel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We report on the discovery of periodic coronal rain in an off-limb sequence of Solar Dynamics Observatory/Atmospheric Imaging Assembly images. The showers are co-spatial and in phase with periodic (6.6 hr) intensity ...
  • Koivisto, Tomi Sebastian; Urban, Federico (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    A completely new mechanism to generate the observed amount of large-scale cosmological magnetic fields is introduced in the context of three-form inflation. The amplification of the fields occurs via fourth order dynamics ...
  • Axelsson, Magnus; Hansen, Frode Kristian; Koivisto, Tomi Sebastian; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    We test anisotropic dark energy models with the 7-year WMAP temperature observation data. In the presence of imperfect sources, large-scale gradients or anisotropies in the dark energy mean that the CMB sky will be distorted ...