Now showing items 1203-1222 of 1243

  • Mas Ribas, Lluis; Mauland-Hus, Renate (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Observational evidence revealing the main mechanisms that accelerate quasar outflows has proven difficult to obtain due to the complexity of the absorption features that this gas produces in the spectra of the emission ...
  • Cheng, X.; Priest, E.R.; Li, H.T.; Chen, J.; Aulanier, Guillaume; Chitta, L.P.; Wang, Y.L.; Peter, H.; Zhu, X.S.; Xing, C.; Ding, M.D.; Solanki, S.K.; Berghmans, D.; Teriaca, L.; Aznar Cuadrado, R.; Zhukov, A.N.; Guo, Y.; Long, D.; Harra, L.; Smith, P.J.; Rodriguez, L.; Verbeeck, C.; Barczynski, K.; Parenti, S. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Magnetic reconnection is a key mechanism involved in solar eruptions and is also a prime possibility to heat the low corona to millions of degrees. Here, we present ultra-high-resolution extreme ultraviolet ...
  • Rouppe van der Voort, Luc; Van Noort, Michiel; de la Cruz Rodriguez, Jaime (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Context. Magnetic reconnection in the deep solar atmosphere can give rise to enhanced emission in the Balmer hydrogen lines, a phenomenon referred to as Ellerman bombs. Aims. To effectively trace magnetic reconnection ...
  • dal Ponte, M.; Santiago, B.; Carnero Rosell, A.; De Paris, L.; Pace, A.B.; Bechtol, K.; Abbott, T.M.C.; Aguena, M.; Allam, S.; Alves, O.; Bacon, D.; Bertin, E.; Bocquet, S.; Brooks, D.; Burke, D.L.; Carrasco Kind, M.; Carretero, J.; Conselice, C.; Costanzi, M.; Desai, S.; De Vicente, J.; Doel, P.; Everett, S.; Ferrero, Ismael; Flaugher, B.; Frieman, J.; García-Bellido, J.; Gerdes, D.W.; Gruendl, R.A.; Gruen, D.; Gutierrez, G.; Hinton, S.R.; Hollowood, D.L.; James, D.J.; Kuehn, K.; Kuropatkin, N.; Marshall, J.L.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Ogando, R.L.C.; Palmese, A.; Paz-Chinchón, F.; Pereira, M.E.S.; Plazas Malagón, A.A.; Pieres, A.; Raveri, M.; Rodriguez-Monroy, M.; Sanchez, E.; Scarpine, V.; Schubnell, M.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Swanson, M.E.C.; Tarle, G.; Thomas, D.; To, C.; Weaverdyck, N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    ABSTRACT We present a sample of 19 583 ultracool dwarf candidates brighter than z ≤23 selected from the Dark Energy Survey DR2 coadd data matched to VHS DR6, VIKING DR5, and AllWISE covering ∼ 480 deg2. The ...
  • de Jorge Henriques, Vasco Manuel; Nelson, Chris J.; Rouppe van der Voort, Luc; Mathioudakis, Mihalis (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Context. The chromosphere of the umbra of sunspots features an assortment of dynamic fine structures that are poorly understood and often studied separately. Small-scale umbral brightenings (SSUBs), umbral microjets, spikes ...
  • Grayling, Matthew; Gutiérrez, Claudia P.; Sullivan, Mark; Wiseman, Philip; Vincenzi, Maria; González-Gaitán, Santiago; Tucker, B. E.; Galbany, Lluís; Kelsey, Lisa; Lidman, Chris; Swann, E.; Smith, Mathew; Frohmaier, Christopher; Carollo, Daniela; Glazebrook, K.; Lewis, Geraint F.; Möller, Anais; Hinton, Samuel R.; Uddin, S. A.; Abbott, Timothy M. C.; Aguena, Michel; Avila, Santiago; Bertin, Emmanuel; Bhargava, S.; Brooks, D.; Carnero Rosell, Aurelio; Carrasco Kind, Matias; Carretero, Jorge; Costanzi, Matteo; da Costa, Luiz N.; De Vicente, Juan; Desai, S.; Diehl, Herman T.; Doel, Peter; Everett, Spencer; Ferrero, Ismael; Fosalba, Pablo; Frieman, Josh; García-Bellido, Juan; Gaztañaga, Enrique; Gruen, Daniel; Gruendl, Robert A.; Gschwend, Julia; Gutierrez, G.; Hoyle, B.; Kuehn, Kyler; Kuropatkin, Nikolay; Lima, M.; MacCrann, Niall; Marshall, Jennifer L.; Martini, Paul; Miquel, Ramon; Morgan, R.; Palmese, Antonella; Paz-Chinchón, Francisco; Plazas, Andrés A.; Romer, A. K.; Sánchez, Carles; Sanchez, E.; Scarpine, Vic; Serrano, S.; Sevilla-Noarbe, Ignacio; Soares-Santos, Marcelle; Suchyta, Eric; Tarlé, Gregory; Thomas, Daniel; To, Chun-Hao; Varga, Tamas Norbert; Walker, Alistair R.; Wilkinson, Reese D. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    ABSTRACT We present DES14X2fna, a high-luminosity, fast-declining Type IIb supernova (SN IIb) at redshift z = 0.0453, detected by the Dark Energy Survey (DES). DES14X2fna is an unusual member of its class, with ...
  • Yalim, Mehmet Sarp; Zank, Gary; Beck, Christian; Choudhary, Debi Prasad; Prasad, Avijeet; Hu, Qiang; Frisse, Makayla (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Understanding the mechanisms underlying the heating of the solar atmosphere is a fundamental problem in solar physics. In this paper, we present an overview of our research on understanding the heating ...
  • Allred, Joel C.; Kowalski, Adam F.; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present a unified computational framework that can be used to describe impulsive flares on the Sun and on dMe stars. The models assume that the flare impulsive phase is caused by a beam of charged particles that is ...
  • Brax, P; Davis, A.-C.; Li, Baojiu; Winther, Hans Arnold (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    We consider modified gravity models driven by a scalar field whose effects are screened in high density regions due to the presence of nonlinearities in its interaction potential and/or its coupling to matter. Our approach ...
  • Salzano, Vincenzo; Mota, David; Capoziello, S.; Napolitano, N. R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    Aims: We investigated the gravitational effects of a scalar field within scalar-tensor gravity as an alternative to dark matter. Motivated by chameleon, symmetron, and f(R)-gravity models, we studied a phenomenological ...
  • Gronke, Max Balthasar; Mota, David; Winther, Hans Arnold (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Modified gravity models require a screening mechanism to be able to evade the stringent constraints from local gravity experiments and, at the same time, give rise to observable astrophysical and cosmological signatures. ...
  • Mason, Charlotte A.; Treu, Tommaso; Dijkstra, Mark; Mesinger, Andrei; Trenti, Michele; Pentericci, Laura; De Barros, Stephane; Vanzella, Eros (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We present a new flexible Bayesian framework for directly inferring the fraction of neutral hydrogen in the intergalactic medium (IGM) during the Epoch of Reionization (EoR, z ~ 6–10) from detections and non-detections of ...
  • Eide, Marius Berge; Gronke, Max Balthasar; Dijkstra, Mark; Hayes, Matthew (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Lyα is a powerful astrophysical probe. Not only is it ubiquitous at high redshifts, it is also a resonant line, making Lyα photons scatter. This scattering process depends on the physical conditions of the gas through which ...
  • Scullion, Eamon; Rouppe, Van Der Voort Luc; Wedemeyer-Böhm, Sven; Antolin, Patrick (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    New and advanced space-based observing facilities continue to lower the resolution limit and detect solar coronal loops in greater detail. We continue to discover even finer substructures within coronal loop cross-sections, ...
  • Sugai, Hajime; Ade, P. A. R.; Akiba, Y; Alonso, D; Arnold, K; Aumont, J.; Austermann, J; Baccigalupi, Carlo; Banday, Anthony J.; Banerji, Ranajoy; Barreiro, R. B.; Basak, S.; Beall, J.; Beckman, S; Bersanelli, Marco; Borrill, J.; Boulanger, F.; Brown, M. L.; Bucher, Martin; Buzzelli, A; Calabrese, E.; Casas, F. J.; Challinor, A.; Chan, V.; Chinone, Y.; Cliche, J.-F.; Columbro, F; Cukierman, A; Curtis, D; Danto, P.; de Bernardis, P.; de Haan, T; De Petris, M; Dickinson, C.; Dobbs, M; Dotani, T; Duband, L.; Ducout, A.; Duff, S.; Duivenvoorden, A.; Duval, J.-M.; Ebisawa, K; Elleflot, T; Enokida, H.; Eriksen, Hans Kristian Kamfjord; Errard, J; Essinger-Hileman, T.; Finelli, Fabio; Flauger, R; Franceschet, C; Fuskeland, Unni; Ganga, K.; Gao, J.-R.; Génova-Santos, R. T.; Ghigna, T; Gomez, A; Gradziel, M. L.; Grain, J.; Grupp, F.; Gruppuso, A.; Gudmundsson, Jon E.; Halverson, Nils W.; Hargrave, P; Hasebe, T; Hasegawa, M.; Hattori, M.; Hazumi, M.; Henrot-Versillé, S.; Herranz, D.; Hill, C; Hilton, G.; Hirota, Y; Hivon, E.; Hlozek, R.; Hoang, D.-T.; Hubmayr, J.; Ichiki, K; Iida, T; Imada, H; Ishimura, K.; Ishino, H; Jaehnig, G. C.; Jones, M; Kaga, T.; Kashima, S; Kataoka, Y; Katayama, N; Kawasaki, T; Keskitalo, R.; Kibayashi, A; Kikuchi, T; Kimura, K; Kisner, T; Kobayashi, Y; Kogiso, N; Kogut, A.; Kohri, K; Komatsu, E.; Komatsu, K; Konishi, K; Krachmalnicoff, Nicoletta; Kuo, C. L.; Kurinsky, N; Kushino, A; Kuwata-Gonokami, M.; Lamagna, L; Lattanzi, M; Lee, A. T.; Linder, Eric; Maffei, B; Maino, Davide; Maki, M; Mangilli, A; Martínez-González, E.; Masi, S; Mathon, R.; Matsumura, T; Mennella, A; Migliaccio, M.; Minami, Y; Mistuda, K; Molinari, D; Montier, L; Morgante, Gianluca; Mot, B; Murata, Y.; Murphy, J. A.; Nagai, M.; Nagata, R; Nakamura, S; Namikawa, T; Natoli, P; Nerval, S.; Nishibori, T; Nishino, H.; Nomura, Yoshiko; Noviello, F; O'Sullivan, C.; Ochi, H; Ogawa, H; Ohsaki, H; Ohta, I; Okada, N; Pagano, L.; Paiella, A; Paoletti, D.; Patanchon, G.; Piacentini, F; Pisano, G; Polenta, G.; Poletti, D; Prouvé, T.; Puglisi, G; Rambaud, D; Raum, C; Realini, S; Remazeilles, M.; Roudil, G.; Rubiño-Martín, J. A.; Russel, M; Sakurai, H.; Sakurai, Y; Sandri, M; Savini, G; Scott, Douglas; Sekimoto, Y; Sherwin, B. D.; Shinozaki, K; Shiraishi, M; Shirron, P.; Signorelli, G; Smecher, G.; Spizzi, P.; Stever, S. L.; Stompor, R.; Sugiyama, S.; Suzuki, A; Suzuki, J; Switzer, E.; Takaku, R; Takakura, H; Takakura, S; Takeda, Y.; Taylor, A.; Taylor, E.; Terao, Y; Thompson, K. L.; Thorne, B; Tomasi, M.; Tomida, H; Trappe, N; Tristram, M.; Tsuji, M; Tsujimoto, M; Tucker, C.; Ullom, J.; Uozumi, S.; Utsunomiya, S; Van Lanen, J.; Vermeulen, G; Vielva, P.; Villa, F.; Vissers, M.; Vittorio, N.; Voisin, F; Walker, I; Watanabe, N; Wehus, Ingunn Kathrine; Weller, J.; Westbrook, B; Winter, B; Wollack, E.; Yamamoto, R; Yamasaki, N. Y.; Yanagisawa, M; Yoshida, T.; Yumoto, J; Zannoni, M; Zonca, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Recent developments of transition-edge sensors (TESs), based on extensive experience in ground-based experiments, have been making the sensor techniques mature enough for their application on future satellite cosmic microwave ...
  • Dixon, M.; Lidman, C.; Mould, J.; Kelsey, L.; Brout, D.; Möller, A.; Wiseman, P.; Sullivan, M.; Galbany, L.; Davis, T.M.; Vincenzi, M.; Scolnic, D.; Lewis, G.F.; Smith, M.; Kessler, R.; Duffy, A.; Taylor, E.N.; Flynn, C.; Abbott, T.M.C.; Aguena, M.; Allam, S.; Andrade-Oliveira, F.; Annis, J.; Asorey, J.; Bertin, E.; Bocquet, S.; Brooks, D.; Burke, D.L.; Carnero Rosell, A.; Carollo, D.; Carrasco Kind, M.; Carretero, J.; Costanzi, M.; da Costa, Luiz N.; Pereira, M.E.S.; Doel, P.; Everett, S.; Ferrero, Ismael; Flaugher, B.; Friedel, D.; Frieman, J.; Garcia-Bellido, J.; Gatti, M.; Gerdes, D.W.; Glazebrook, K.; Gruen, D.; Gschwend, J.; Gutierrez, G.; Hinton, S.R.; Hollowood, D.L.; Honscheid, K.; Huterer, D.; James, D.J.; Kuehn, K.; Kuropatkin, N.; Malik, U.; March, M.; Menanteau, F.; Miquel, R.; Morgan, R.; Nichol, B.; Ogando, R.L.C.; Palmese, A.; Paz-Chinchón, F.; Pieres, A.; Plazas Malagón, A.A.; Rodriguez-Monroy, M.; Romer, A.K.; Sanchez, E.; Scarpine, V.; Sevilla-Noarbe, I.; Soares-Santos, M.; Suchyta, E.; Tarle, G.; To, C.; Tucker, B.E.; Tucker, D.L.; Varga, T.N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    ABSTRACT We use stacked spectra of the host galaxies of photometrically identified Type Ia supernovae (SNe Ia) from the Dark Energy Survey (DES) to search for correlations between Hubble diagram residuals and the ...
  • Ingebrigtsen, Tony Asle (Master thesis / Masteroppgave, 2010)
    The statistical analysis of the Cosmic Microwave Background radiation to make estimates of the Power Spectrum is a comutationally heavy operation, involving large covariance matrices. In this thesis I explore the possibility ...
  • Eklund, Henrik; Szydlarski, Mikolaj; Wedemeyer, Sven (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Context. The intensity of radiation from the solar atmosphere at millimetre wavelengths is closely related to the plasma temperature, and the formation height of the radiation is wavelength dependent. It follows from this ...
  • Falck, Bridget Lynn; Koyama, Kazuya; Zhao, Gong-Bo; Cautun, Marius (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The Vainshtein mechanism, present in many models of gravity, is very effective at screening dark matter haloes such that the fifth force is negligible and general relativity is recovered within their Vainshtein radii. ...
  • Hu, Qiang; Zhu, Chunming; He, Wen; Qiu, Jiong; Jian, Lan K.; Prasad, Avijeet (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract One strong magnetic cloud (MC) with a magnetic field magnitude reaching ∼40 nT at 1 au during 2012 June 16–17 is examined in association with a preexisting magnetic flux rope (MFR) identified on the Sun. ...