Now showing items 25-44 of 518

  • Rigby, J. R.; Bayliss, M. B.; Gladders, M. D.; Sharon, K.; Wuyts, E; Dahle, Håkon; Johnson, T.; Peña-Guerrero, M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We measure [C iii] 1907, C iii] 1909 Å emission lines in 11 gravitationally lensed star-forming galaxies at z ~ 1.6–3, finding much lower equivalent widths than previously reported for fainter lensed galaxies. While it is ...
  • Leenaarts, Jorrit; Golding, Thomas Peter; Carlsson, Mats; Libbrecht, Tine; Joshi, Jayant (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    Context. The He i 1083 nm is a powerful diagnostic for inferring properties of the upper solar chromosphere, in particular for the magnetic field. The basic formation of the line in one-dimensional models is well understood, ...
  • Ninive, Per Harald (Master thesis / Masteroppgave, 2009)
    En mulig forklaring på at universet gikk inn i en fase av akselerert ekspansjon for 5-6 milliarder år siden, er at energitettheten i universet inneholder et bidrag fra et dynamisk skalarfelt. Problemet med denne forklaringen ...
  • Winther, Hans Arnold (Master thesis / Masteroppgave, 2010)
    We investigate scalar-field theories with a field-dependent coupling to matter and show the existence of a chameleon mechanism. The thin-shell solutions for a spherical body are found, and used to investigate the consequences ...
  • Zhang, B; David, L. P.; Jones, C.; Andrade-Santos, F.; O'Sullivan, E.; Dahle, Håkon; Nulsen, P. E. J.; Clarke, T. E.; Pointecouteau, E; Pratt, G. W.; Arnaud, M.; Vrtilek, J. M.; Ji, L.; van Weeren, R. J.; Kraft, R. P.; Kong, X. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present Chandra and XMM-Newton observations of PLCK G036.7+14.9 from the Chandra–Planck Legacy Program. The high resolution X-ray observations reveal two close (~72'' = 193 kpc in projection) subclusters, G036N and ...
  • Giles, P. A.; Maughan, B. J.; Dahle, Håkon; Bonamente, M.; Landry, D.; Jones, C.; Joy, M.; Murray, S. S.; van der Pyl, N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We present the results of work involving a statistically complete sample of 34 galaxy clusters, in the redshift range 0.15 ≤ z ≤ 0.3 observed with Chandra. We investigate the luminosity–mass (LM) relation for the cluster ...
  • Shen, Sijing; Kulkarni, Girish; Madau, Piero; Mayer, Lucio (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Using the Eris zoom-in cosmological simulation of assembly of a Milky Way analogue, we study the chemical enrichment of stars due to accretion of metal-enriched gas from the interstellar medium (ISM) during the Galaxy's ...
  • Mendes Domingos Pereira, Tiago; Rouppe van der Voort, Luc; Hansteen, Viggo; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Low-lying loops have been discovered at the solar limb in transition region temperatures by the Interface Region Imaging Spectrograph (IRIS). They do not appear to reach coronal temperatures, and it has been suggested that ...
  • Gošić, Milan; de la Cruz Rodriguez, Jaime; De Pontieu, Bart Walter; Bellot Rubio, L. R.; Carlsson, Mats; Esteban Pozuelo, S.; Ortiz, Ada; Polito, Vanessa (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The heating of the solar chromosphere remains one of the most important questions in solar physics. Our current understanding is that small-scale internetwork (IN) magnetic fields play an important role as a heating agent. ...
  • Leenarts, Jorrit; de la Cruz Rodriguez, Jaime; Danilovic, Sanja; Scharmer, Göran B.; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Context: The radiative losses in the solar chromosphere vary from 4 kW m−2 in the quiet Sun, to 20 kW m−2 in active regions. The mechanisms that transport non-thermal energy to and deposit it in the chromosphere are still ...
  • Reid, A.; de Jorge Henriques, Vasco Manuel; Mathioudakis, M.; Doyle, J. G.; Ray, T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We use spectropolarimetric observations of the Ca ii 8542 Å line, taken from the Swedish 1 m Solar Telescope, in an attempt to recover dynamic activity in a micro-flaring region near a sunspot via inversions. These inversions ...
  • Drews, Ainar (Master thesis / Masteroppgave, 2014)
    In this thesis chromospheric features called Penumbral Microjets (PMJs) are investigated in a sunspot. Observations of high resolution in space, time and wavelength from the Swedish 1-meter Solar Telescope (SST) are used ...
  • Quintero Noda, C.; Shimizu, T.; Katsukawa, Y.; de la Cruz Rodriguez, Jaime; Carlsson, Mats; Anan, T.; Oba, T.; Ichimoto, K.; Suematsu, Y. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Future solar missions and ground-based telescopes aim to understand the magnetism of the solar chromosphere. We performed a supporting study in Quintero Noda et al. focused on the infrared Ca ii 8542 Å line and we concluded ...
  • Quintero Noda, C.; Kato, Yoshiaki; Katsukawa, Y.; Oba, T.; de la Cruz Rodriguez, Jaime; Carlsson, Mats; Shimizu, T.; Orozco Suarez, D.; Ruiz Cobo, B.; Kubo, M.; Anan, T.; Ichimoto, K.; Suematsu, Y. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Future solar missions and ground-based telescopes aim to understand the magnetism of the solar chromosphere. We performed a supporting study in Quintero Noda et al. focused on the infrared Ca ii 8542 Å line and we concluded ...
  • Quintero Noda, Carlos; Iijima, H.; Katsukawa, Y.; Shimizu, T.; Carlsson, Mats; de la Cruz Rodriguez, Jaime; Ruiz Cobo, B.; Orozco Suarez, D.; Oba, T.; Anan, T.; Kubo, M.; Kawabata, Y.; Ichimoto, K.; Suematsu, Y. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    We investigate the diagnostic potential of the spectral lines at 850 nm for understanding the magnetism of the lower atmosphere. For that purpose, we use a newly developed 3D simulation of a chromospheric jet to check the ...
  • Trujillo Bueno, Javier; Stepan, Jiri; Belluzzi, Luca; Asensio Ramos, Andrés; Manso Sainz, Manso; del Pino Alemán, T.; Casini, Roberto; Ishikawa, Ryohko; Kano, Ryouhei; Winebarger, Amy R.; Auchère, Frédéric; Narukage, Noriyuki; Kobayashi, Ken; Bando, Takamasa; Katsukawa, Yukio; Kubo, Masahito; Ishikawa, Shin'nosuke; Giono, Gabriel; Hara, Hirohisa; Suematsu, Yoshinori; Shimizu, Toshifumi; Sakao, Taro; Tsuneta, Saku; Ichimoto, Kiyoshi; Cirtain, Jonathan W.; Champey, Patrick R.; De Pontieu, Bart Walter; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a suborbital rocket experiment that on 2015 September 3 measured the linear polarization produced by scattering processes in the hydrogen Lyα line of the solar ...
  • Alam, Shadab; Ata, Metin; Bailey, Stephen; Beutler, Florian; Bizyaev, Dmitry; Blazek, Jonathan A; Bolton, Adam S.; Brownstein, Joel R.; Burden, Angela; Chuang, Chia-Hsun; Comparat, Johan; Cuesta, Antonio J.; Dawson, Kyle S; Eisenstein, Daniel J.; Escoffier, Stephanie; Gil-Marin, Hector; Grieb, Jan Niklas; Hand, Nick; Ho, Shirley; Kinemuchi, Karen; Kirkby, David; Kitaura, Francisco; Malanushenko, Elena; Malanushenko, Viktor; Maraston, Claudia; McBride, Cameron K.; Nichol, Robert C.; Olmstead, Matthew D.; Oravetz, Daniel J; Padmanabhan, Nikhil; Palanque-Delabrouille, Nathalie; Pan, Kaike; Pellejero-Ibanez, M; Percival, Will J.; Petitjean, Patrick; Prada, Francisco; Price-Whelan, Adrian M; Reid, Beth A.; Rodríguez-Torres, Sergio A.; Roe, Natalie A; Ross, Ashley J.; Ross, Nicholas P.; Rossi, Graziano; Rubiño-Martín, J. A.; Saito, Shun; Salazar-Albornoz, Salvador; Samushia, Lado; Sanchez, Ariel G.; Satpathy, Siddharth; Schlegel, David J.; Schneider, Donald P; Scoccola, Claudia G; Seo, Hee-Jong; Sheldon, Erin S; Simmons, Audrey; Slosar, Anze; Strauss, Michael A; Swanson, Molly E C; Thomas, Daniel; Tinker, Jeremy L; Tojeiro, Rita; Magana, Mariana Vargas; Vazquez, Jose Alberto; Verde, Licia; Wake, David A; Wang, Yuting; Weinberg, David H; White, Martin; Wood-Vasey, W Michael; Yeche, Christophe; Zehavi, Idit; Zhai, Zhongxu; Zhao, Gong-Bo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    We present cosmological results from the final galaxy clustering data set of the Baryon Oscillation Spectroscopic Survey, part of the Sloan Digital Sky Survey III. Our combined galaxy sample comprises 1.2 million massive ...
  • 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 ...