Browsing Institutt for teoretisk astrofysikk by Title

Now showing items 56-75 of 1279

  • Analysis of the Evolution of a Multi-Ribbon Flare and Failed Filament Eruption 
    Joshi, Reetika; Mandrini, Cristina H.; Chandra, Ramesh; Schmieder, Birgitte; Cristiani, Germán D.; Mac Cormack, Cecilia; Démoulin, Pascal; Cremades, Hebe (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract How filaments form and erupt are topics about which solar researchers have wondered for more than a century and they are still open to debate. We present observations of a filament formation, its failed eruption, ...
  • Analysis on foreground cleaning methods for the CMB:Locating the residuals by correlation 
    Sharma, Saurav (Master thesis / Masteroppgave, 2016)
  • Andromeda’s Parachute: Time Delays and Hubble Constant 
    Shalyapin, Vyacheslav N.; Goicoechea, Luis J.; Dyrland, Karianne; Dahle, Håkon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The gravitational lens system PS J0147+4630 (Andromeda’s Parachute) consists of four quasar images ABCD and a lensing galaxy. We obtained r -band light curves of ABCD in the 2017−2022 period from monitoring with two 2 m ...
  • Anomalous transport due to large coherent structures in a magnetized toroidal plasma 
    Fredriksen, Åshild; Pécseli, Hans L; Trulsen, Jan Karsten (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
  • Another X-ray UFO without a momentum-boosted molecular outflow: ALMA CO(1–0) observations of the galaxy pair IRAS 05054+1718 
    Bonanomi, Francesca; Cicone, Claudia; Severgnini, Paola; Braito, Valentina; Vignali, Cristian; Reeves, James N.; Sirressi, Mattia; Montoya Arroyave, Isabel; Ceca, Roberto Della; Ballo, Lucia; Dotti, Massimo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We present Atacama Large Millimetre/submillimetre Array (ALMA) CO(1–0) observations of the nearby infrared luminous (LIRG) galaxy pair IRAS 05054+1718 (also known as CGCG 468-002), as well as a new analysis of X-ray data ...
  • The Appearance of Spicules in High Resolution Observations of Ca II H and Hα 
    Mendes Domingos Pereira, Tiago; Rouppe, Van Der Voort Luc; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    Solar spicules are chromospheric fibrils that appear everywhere on the Sun, yet their origin is not understood. Using high resolution observations of spicules obtained with the Swedish 1 m Solar Telescope, we aim to ...
  • Applications of Grid-Based Likelihood Methods to CMB Analysis 
    Mikkelsen, Kristin (Doctoral thesis / Doktoravhandling, 2014)
  • Applications of the Gaussian kinematic formula to CMB data analysis 
    Fantaye, Yabebal Tadesse; Marinucci, Domenico; Hansen, Frode Kristian; Maino, Davide (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    The Gaussian kinematic formula (GKF) [R. J. Adler and J. E. Taylor, Random Fields and Geometry (Springer, New York, 2007).] is an extremely powerful tool allowing for explicit analytic predictions of expected values of ...
  • Asevolution: a relativistic N-body implementation of the (a)symmetron 
    Christiansen, Øyvind; Hassani, Farbod; Jalilvand, Mona; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    We present asevolution, a cosmological N-body code developed based on gevolution, which consistently solves for the (a)symmetron scalar field and metric potentials within the weak-field approximation. In asevolution, the ...
  • Assessing tension metrics with dark energy survey and Planck data 
    Lemos, Pablo; Raveri, Marco; Campos, A.; Park, Y.; Chang, C.; Weaverdyck, Noah; Huterer, Dragan; Liddle, A. R.; Blazek, J.; Cawthon, Ross; Choi, A.; DeRose, J.; Dodelson, Scott; Doux, Cyrille; Gatti, M.; Gruen, Daniel; Harrison, Ian; Krause, Elisabeth; Lahav, Ofer; MacCrann, Niall; Muir, J.; Prat, Judit; Rau, Markus Michael; Rollins, R. P.; Samuroff, Simon; Zuntz, Joseph; Aguena, Michel; Allam, Sahar; Annis, James; Avila, Santiago; Bacon, D.; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Burke, David L.; Carnero Rosell, Aurelio; Carrasco Kind, Matias; Carretero, Jorge; Castander, Francisco Javier; Conselice, Christopher; Costanzi, Matteo; Crocce, Martin; Pereira, Maria Elidaiana da Silva; Davis, Tamara M.; De Vicente, Juan; Desai, S.; Diehl, Herman T.; Doel, Peter; Eckert, Kathleen; Eifler, Tim F.; Elvin-Poole, J.; Everett, Spencer; Evrard, August E.; Ferrero, Ismael; Ferté, Agnès; Flaugher, Brenna; Fosalba, Pablo; Frieman, Josh; García-Bellido, Juan; Gaztañaga, Enrique; Gerdes, David W.; Giannantonio, Tommaso; Gruendl, Robert A.; Gschwend, Julia; Gutierrez, G.; Hartley, William G.; Hinton, Samuel R.; Hollowood, Devon L.; Honscheid, Klaus; Hoyle, Ben; Huff, Eric M.; James, David J.; Jarvis, M.; Lima, M.; Maia, Marcio A. G.; March, Marisa; Marshall, Jennifer L.; Martini, Paul; Melchior, Peter; Menanteau, Felipe; Miquel, Ramon; Mohr, Joseph J.; Morgan, R.; Myles, Justin; Ogando, Ricardo L. C.; Palmese, Antonella; Pandey, S.; Paz-Chinchón, Francisco; Plazas Malagón, Andrés A.; Rodriguez-Monroy, Martin; Roodman, Aaron; Sanchez, E.; Scarpine, Vic; Schubnell, M.; Secco, Lucas Frozza; Serrano, S.; Sevilla-Noarbe, Ignacio; Smith, Mathew; Soares-Santos, Marcelle; Suchyta, Eric; Swanson, Molly E. C.; Tarlé, Gregory; Thomas, D.; To, Chun-Hao; Troxel, Michael A.; Varga, Tamas Norbert; Weller, Jochen; Wester, W. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    ABSTRACT Quantifying tensions – inconsistencies amongst measurements of cosmological parameters by different experiments – has emerged as a crucial part of modern cosmological data analysis. Statistically significant ...
  • Astrometry, Morphology, and Polarimetry of Comet Donati in 1858 
    Pettersen, Bjørn Ragnvald (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present unpublished observations of Comet Donati 1858 V recently recovered in an old storage facility at the University Observatory in Oslo. Carefully-made drawings reveal temporal changes in the appearance of this ...
  • Astrophysical and cosmological axion bounds 
    Sivertsen, Sofie Vike (Master thesis / Masteroppgave, 2011)
    The existence of dark matter is a well established fact both due to galaxy rotation curves and also due to the CMB temperature anisotropies and the matter power spectra. According to the $\Lambda$CDM model, the so called ...
  • Astrophysical Archaeology: Reviving COBE–DIRBE for Next-Generation Global Analysis 
    Erikstad, Gustav Bredal (Master thesis / Masteroppgave, 2022)
    This thesis aims to revive the data gathered by the Diffuse Infrared Background Experiment (DIRBE) aboard the COsmic Background Explorer (COBE ) satellite, and, through modernizing this dataset, make it available for future ...
  • Astrophysical Simulations for Uncovering Signatures of Gravity 
    Hagala, Robert (Doctoral thesis / Doktoravhandling, 2019)
    Einstein's theory of general relativity is currently our best model for how gravity works. It can be used to predict motions of planets, the speed-up of clocks on GPS satellites, and gravitational waves. General relativity ...
  • Astrophysics with the Laser Interferometer Space Antenna 
    Amaro-Seoane, Pau; Andrews, Jeff; Arca Sedda, Manuel; Askar, Abbas; Baghi, Quentin; Balasov, Razvan; Bartos, Imre; Bavera, Simone S.; Bellovary, Jillian; Berry, Christopher P. L.; Berti, Emanuele; Bianchi, Stefano; Blecha, Laura; Blondin, Stéphane; Bogdanović, Tamara; Boissier, Samuel; Bonetti, Matteo; Bonoli, Silvia; Bortolas, Elisa; Breivik, Katelyn; Capelo, Pedro R.; Caramete, Laurentiu; Cattorini, Federico; Charisi, Maria; Chaty, Sylvain; Chen, Xian; Chruślińska, Martyna; Chua, Alvin J. K.; Church, Ross; Colpi, Monica; D’Orazio, Daniel; Danielski, Camilla; Davies, Melvyn B.; Dayal, Pratika; De Rosa, Alessandra; Derdzinski, Andrea; Destounis, Kyriakos; Dotti, Massimo; Duţan, Ioana; Dvorkin, Irina; Fabj, Gaia; Foglizzo, Thierry; Ford, Saavik; Fouvry, Jean-Baptiste; Franchini, Alessia; Fragos, Tassos; Fryer, Chris; Gaspari, Massimo; Gerosa, Davide; Graziani, Luca; Groot, Paul; Habouzit, Melanie; Haggard, Daryl; Haiman, Zoltan; Han, Wen-Biao; Istrate, Alina; Johansson, Peter H.; Khan, Fazeel M.; Kimpson, Tomas; Kokkotas, Kostas; Kong, Albert; Korol, Valeriya; Kremer, Kyle; Kupfer, Thomas; Lamberts, Astrid; Larson, Shane; Lau, Mike; Liu, Dongliang; Lloyd-Ronning, Nicole; Lodato, Giuseppe; Lupi, Alessandro; Ma, Chung-Pei; Maccarone, Tomas; Mandel, Ilya; Mangiagli, Alberto; Mapelli, Michela; Mathis, Stéphane; Mayer, Lucio; McGee, Sean; McKernan, Berry; Miller, M. C.; Mota, David F.; Mumpower, Matthew; Nasim, Syeda S.; Nelemans, Gijs; Noble, Scott; Pacucci, Fabio; Panessa, Francesca; Paschalidis, Vasileios; Pfister, Hugo; Porquet, Delphine; Quenby, John; Ricarte, Angelo; Röpke, Friedrich K.; Regan, John; Rosswog, Stephan; Ruiter, Ashley; Ruiz, Milton; Runnoe, Jessie; Schneider, Raffaella; Schnittman, Jeremy; Secunda, Amy; Sesana, Alberto; Seto, Naoki; Shao, Lijing; Shapiro, Stuart; Sopuerta, Carlos; Stone, Nicholas C.; Suvorov, Arthur; Tamanini, Nicola; Tamfal, Tomas; Tauris, Thomas; Temmink, Karel; Tomsick, John; Toonen, Silvia; Torres-Orjuela, Alejandro; Toscani, Martina; Tsokaros, Antonios; Unal, Caner; Vázquez-Aceves, Verónica; Valiante, Rosa; van Putten, Maurice; van Roestel, Jan; Vignali, Christian; Volonteri, Marta; Wu, Kinwah; Younsi, Ziri; Yu, Shenghua; Zane, Silvia; Zwick, Lorenz; Antonini, Fabio; Baibhav, Vishal; Barausse, Enrico; Bonilla Rivera, Alexander; Branchesi, Marica; Branduardi-Raymont, Graziella; Burdge, Kevin; Chakraborty, Srija; Cuadra, Jorge; Dage, Kristen; Davis, Benjamin; de Mink, Selma E.; Decarli, Roberto; Doneva, Daniela; Escoffier, Stephanie; Gandhi, Poshak; Haardt, Francesco; Lousto, Carlos O.; Nissanke, Samaya; Nordhaus, Jason; O’Shaughnessy, Richard; Portegies Zwart, Simon; Pound, Adam; Schussler, Fabian; Sergijenko, Olga; Spallicci, Alessandro; Vernieri, Daniele; Vigna-Gómez, Alejandro (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely ...
  • Atacama Cosmology Telescope: High-resolution component-separated maps across one third of the sky 
    Coulton, William; Madhavacheril, Mathew S.; Duivenvoorden, Adriaan J.; Hill, J. Colin; Abril-Cabezas, Irene; Ade, Peter A. R.; Aiola, Simone; Alford, Tommy; Amiri, Mandana; Amodeo, Stefania; An, Rui; Atkins, Zachary; Austermann, Jason E.; Battaglia, Nicholas; Battistelli, Elia Stefano; Beall, James A.; Bean, Rachel; Beringue, Benjamin; Bhandarkar, Tanay; Biermann, Emily; Bolliet, Boris; Bond, J. Richard; Cai, Hongbo; Calabrese, Erminia; Calafut, Victoria; Capalbo, Valentina; Carrero, Felipe; Chesmore, Grace E.; Cho, Hsiao-Mei; Choi, Steve K.; Clark, Susan E.; Córdova Rosado, Rodrigo; Cothard, Nicholas F.; Coughlin, Kevin; Crowley, Kevin T.; Devlin, Mark J.; Dicker, Simon; Doze, Peter; Duell, Cody J.; Duff, Shannon M.; Dunkley, Jo; Dünner, Rolando; Fanfani, Valentina; Fankhanel, Max; Farren, Gerrit; Ferraro, Simone; Freundt, Rodrigo; Fuzia, Brittany; Gallardo, Patricio A.; Garrido, Xavier; Givans, Jahmour; Gluscevic, Vera; Golec, Joseph E.; Guan, Yilun; Halpern, Mark; Han, Dongwon; Hasselfield, Matthew; Healy, Erin; Henderson, Shawn; Hensley, Brandon; Hervías-Caimapo, Carlos; Hilton, Gene C.; Hilton, Matt; Hincks, Adam D.; Hložek, Renée; Ho, Shuay-Pwu Patty; Huber, Zachary B.; Hubmayr, Johannes; Huffenberger, Kevin M.; Hughes, John P.; Irwin, Kent; Isopi, Giovanni; Jense, Hidde T.; Keller, Ben; Kim, Joshua; Knowles, Kenda; Koopman, Brian J.; Kosowsky, Arthur; Kramer, Darby; Kusiak, Aleksandra; La Posta, Adrien; Lakey, Victoria; Lee, Eunseong; Li, Zack; Li, Yaqiong; Limon, Michele; Lokken, Martine; Louis, Thibaut; Lungu, Marius; MacCrann, Niall; MacInnis, Amanda; Maldonado, Diego; Maldonado, Felipe; Mallaby-Kay, Maya; Marques, Gabriela A.; Marrewijk, Joshiwa van; McCarthy, Fiona; McMahon, Jeff; Mehta, Yogesh; Menanteau, Felipe; Moodley, Kavilan; Morris, Thomas W.; Mroczkowski, Tony; Næss, Sigurd Kirkevold; Namikawa, Toshiya; Nati, Federico; Newburgh, Laura; Nicola, Andrina; Niemack, Michael D.; Nolta, Michael R.; Orlowski-Scherer, John; Page, Lyman A.; Pandey, Shivam; Partridge, Bruce; Prince, Heather; Puddu, Roberto; Qu, Frank J.; Radiconi, Federico; Robertson, Naomi; Rojas, Felipe; Sakuma, Tai; Salatino, Maria; Schaan, Emmanuel; Schmitt, Benjamin L.; Sehgal, Neelima; Shaikh, Shabbir; Sherwin, Blake D.; Sierra, Carlos; Sievers, Jon; Sifón, Cristóbal; Simon, Sara; Sonka, Rita; Spergel, David N.; Staggs, Suzanne T.; Storer, Emilie; Switzer, Eric R.; Tampier, Niklas; Thornton, Robert; Trac, Hy; Treu, Jesse; Tucker, Carole; Ullom, Joel; Vale, Leila R.; Van Engelen, Alexander; Van Lanen, Jeff; Vargas, Cristian; Vavagiakis, Eve M.; Wagoner, Kasey; Wang, Yuhan; Wenzl, Lukas; Wollack, Edward J.; Xu, Zhilei; Zago, Fernando; Zheng, Kaiwen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Observations of the millimeter sky contain valuable information on a number of signals, including the blackbody cosmic microwave background (CMB), Galactic emissions, and the Compton-y distortion due to the thermal ...
  • The atmospheric response to high nonthermal electron beam fluxes in solar flares. I. modeling the brightest NUV footpoints in the X1 solar flare of 2014 March 29 
    Kowalski, Adam F.; Allred, Joel C.; Daw, A.; Cauzzi, Gianna; Carlsson, Mats (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The 2014 March 29 X1 solar flare (SOL20140329T17:48) produced bright continuum emission in the far- and near-ultraviolet (NUV) and highly asymmetric chromospheric emission lines, providing long-sought constraints on the ...
  • Automated Detection of Rapid Variability of Moss Using SDO/AIA and Its Connection to the Solar Corona 
    Graham, David R.; De Pontieu, Bart Walter; Testa, Paola (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Active region moss—the upper transition region of hot loops—was observed exhibiting rapid intensity variability on timescales of order 15 s by Testa et al. in a short time series (~150 s) data set from Hi-C (High-resolution ...
  • Automating Ellerman bomb detection in ultraviolet continua 
    Vissers, Gregal Joan Maria; Rouppe van der Voort, Luc; Rutten, Robert (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Ellerman bombs are transient brightenings in the wings of Hα 6563 Å that pinpoint photospheric sites of magnetic reconnection in solar active regions. Their partial visibility in the 1600 Å and 1700 Å continua registered ...
  • Axisymmetric smoothed particle magnetohydrodynamics 
    García-Senz, Domingo; Wissing, Robert Bleckert Nils Håkan; Cabezón, R. M.; Vurgun, E.; Linares, Manuel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    ABSTRACT Many astrophysical and terrestrial scenarios involving magnetic fields can be approached in axial geometry. Although the smoothed particle hydrodynamics (SPH) technique has been successfully extended to ...