Now showing items 1-20 of 735

  • Tremblay, G. R.; Gladders, M. D.; Baum, S. A.; O'Dea, C. P.; Bayliss, M. B.; Cooke, K. C.; Dahle, Håkon; Davis, T. A.; Florian, M.; Rigby, J. R.; Sharon, K.; Soto, E; Wuyts, E (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    New Hubble Space Telescope ultraviolet and optical imaging of the strong-lensing galaxy cluster SDSS J1531+3414 (z = 0.335) reveals two centrally dominant elliptical galaxies participating in an ongoing major merger. The ...
  • Wang, Deng; Mota, David (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
  • Armstrong, John A.; Fletcher, Lyndsay (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    ABSTRACT Current post-processing techniques for the correction of atmospheric seeing in solar observations – such as Speckle interferometry and Phase Diversity methods – have limitations when it comes to their ...
  • Thommesen, Harald; Andersen, Kristian Joten; Aurlien, Ragnhild; Banerji, Ranajoy; Brilenkov, Maksym; Fuskeland, Unni; Eriksen, Hans Kristian Kamfjord; Galloway, Mathew; Mocanu, Laura-Monica; Svalheim, Trygve Leithe; Wehus, Ingunn Kathrine (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    We review and compare two different cosmic microwave background (CMB) dipole estimators discussed in the literature and assess their performances through Monte Carlo simulations. The first method amounts to simple template ...
  • Drews, Ainar; Rouppe van der Voort, Luc (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Penumbral microjets (PMJs) are short-lived, jet-like objects found in the penumbra of sunspots. They were first discovered in chromospheric lines and have later also been shown to exhibit signals in transition ...
  • Wissing, Robert; Hobbs, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    We present a new analytical equation of state (EOS), which correctly models high pressure theory and fits well to the experimental data of ɛ-Fe, SiO2, Mg2, and the Earth. The cold part of the EOS is modeled after the Varpoly ...
  • Wissing, Robert; Hobbs, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Observed FeO/MgO ratios in the Moon and Earth are inconsistent with simulations done with a single homogeneous silicate layer. In this paper we use a newly developed equation of state to perform smoothed particle hydrodynamics ...
  • Patel, Ritesh; Pant, Vaibhav; Kalugodu, Chandrashekhar; Banerjee, Dipankar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Coronal mass ejections (CMEs) are often observed to be accompanied by flare, current sheets, and plasmoids/plasma blobs. 2D and 3D numerical simulations and observations reported plasmoids moving upward as well ...
  • Bobra, Monica G; Mumford, Stuart J; Hewett, Russell J; Christe, Steven D; Reardon, Kevin P.; Savage, Sabrina L.; Ireland, Jack; Mendes Domingos Pereira, Tiago; Chen, Bin; Pérez-Suárez, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The SunPy Project developed a 13-question survey to understand the software and hardware usage of the solar-physics community. Of the solar-physics community, 364 members across 35 countries responded to our survey. We ...
  • Frogner, Lars; Gudiksen, Boris Vilhelm; Bakke, Helle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Observational and theoretical evidence suggest that beams of accelerated particles are produced in flaring events of all sizes in the solar atmosphere, from X-class flares to nanoflares. Current models of these ...
  • Bakke, Helle Merethe (Master thesis / Masteroppgave, 2018)
  • Chisholm, John; Gazagnes, S; Schaerer, Daniel; Verhamme, Anne; Rigby, Jane R.; Bayliss, Matthew B.; Sharon, Keren; Gladders, Michael D.; Dahle, Håkon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The fraction of ionizing photons that escape high-redshift galaxies sensitively determines whether galaxies reionized the early Universe. However, this escape fraction cannot be measured from high-redshift galaxies because ...
  • Al-Janabi, Khalid; Antolin, Patrick; Baker, Deborah; Bellot Rubio, Luis R.; Bradley, Louisa; Brooks, David H.; Centeno, Rebecca; Culhane, J. Leonard; Del Zanna, Giulio; Doschek, George A.; Fletcher, Lyndsay; Hara, Hirohiso; Harra, Louise K.; Hillier, Andrew S.; Imada, Shinsuke; Klimchuk, James A.; Mariska, John T.; Mendes Domingos Pereira, Tiago; Reeves, Katharine K.; Sakao, Taro; Sakurai, Takashi; Shimizu, Toshifumi; Shimojo, Masumi; Shiota, Daikou; Solanki, Sami K.; Sterling, Alphonse C.; Su, Yingna; Suematsu, Yoshinori; Tarbell, Theodore D.; Tiwari, Sanjiv K.; Toriumi, Shin; Ugarte-Urra, Ignacio; Warren, Harry P.; Watanabe, Tetsuya; Young, Peter R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Hinode is Japan’s third solar mission following Hinotori (1981–1982) and Yohkoh (1991–2001): it was launched on 2006 September 22 and is in operation currently. Hinode carries three instruments: the Solar Optical Telescope, ...
  • Fleck, Bernhard; Carlsson, Mats; Khomenko, Elena; Rempel, M.; Steiner, Oskar; Vigeesh, G. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    There has been tremendous progress in the degree of realism of three-dimensional radiation magneto-hydrodynamic simulations of the solar atmosphere in the past decades. Four of the most frequently used numerical codes are ...
  • de Moortel, Ineke; Falconer, Isobel; Stack, Robert (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Abstract Ineke De Moortel, Isobel Falconer and Robert Stack explore the achievements and influence of Hannes Alfvén, in particular his seminal Monthly Notices paper of 1947 on the heating of the solar corona.
  • Bradač, Maruša; Garcia-Appadoo, Diego; Huang, Kuang-Han; Vallini, Livia; Finney, Emily Quinn; Hoag, Austin; Lemaux, Brian C.; Schmidt, Kasper B.; Treu, Tommaso; Carilli, Chris; Dijkstra, Mark; Ferrara, Andrea; Fontana, Adriano; Jones, Tucker; Ryan, Russell; Wagg, Jeff; Gonzalez, Anthony H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017. The American Astronomical Society. All rights reserved.
  • Nguyen, Nathen H.; Lira, Paulina; Trakhtenbrot, Benny; Netzer, Hagai; Cicone, Claudia; Maiolino, Roberto; Shemmer, Ohad (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    We present ALMA Band 7 data of the[CII]lm157.74memission line and underlying far-IR(FIR)continuum for12 luminous quasars atz4.8powered by fast-growing supermassive black holes(SMBHs). Our totalsample consists of 18 ...
  • da Silva Santos, João Manuel; de la Cruz Rodriguez, Jaime; White, S. M.; Leenaarts, Jorrit; Vissers, Gregal Joan Maria; Hansteen, Viggo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Aims. We aim to investigate the temperature enhancements and formation heights of solar active-region brightenings such as Ellerman bombs (EBs), ultraviolet bursts (UVBs), and flaring active-region fibrils (FAFs) using ...
  • Arbey, Alexandre; Auffinger, Jérémy; Hickerson, KP; Jenssen, Espen Sem (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    We present the version 2 of AlterBBN, an open public code for the calculation of the abundance of the elements from Big-Bang nucleosynthesis. It does not rely on any closed external library or program, aims at being ...
  • Nóbrega Siverio, Daniel Elias; Martinez-Sykora, Juan; Moreno-Insertis, Fernando; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. Ambipolar diffusion is a physical mechanism related to the drift between charged and neutral particles in a partially ionized plasma that is key to many different astrophysical systems. However, understanding its ...