Browsing Institutt for teoretisk astrofysikk by Title

Now showing items 229-248 of 1258

  • Cosmological perturbations from statistical thermal fluctuations 
    Biswas, T.; Brandenberger, R.; Koivisto, Tomi Sebastian; Mazumdar, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Cosmological perturbations due to statistical thermal fluctuations in a single fluid characterized by an arbitrary equation of state are computed. Formulas to predict the scalar and tensor perturbation spectra and ...
  • Cosmological Probes of Modified Gravity 
    Winther, Hans Arnold (Doctoral thesis / Doktoravhandling, 2013)
  • Cosmological shocks around galaxy clusters: a coherent investigation with DES, SPT, and ACT 
    Anbajagane, D.; Chang, C.; Baxter, E. J.; Charney, S.; Lokken, M.; Aguena, M.; Allam, Sahar; Alves, O.; Amon, A.; An, R.; Andrade-Oliveira, F.; Bacon, D.; Battaglia, N.; Bechtol, K.; Becker, M. R.; Benson, B. A.; Bernstein, Gary M.; Bleem, L.; Bocquet, S.; Bond, J. Richard; Brooks, D.; Carnero Rosell, Aurelio; Carrasco Kind, Matias; Chen, R.; Choi, A.; Costanzi, M.; Crawford, Thomas M.; Crocce, M.; da Costa, Luiz N.; Pereira, M. E. S.; Davis, Tamara M.; De Vicente, J.; Desai, S.; Devlin, M. J.; Diehl, H. T.; Doel, P.; Doux, C.; Drlica-Wagner, A.; Elvin-Poole, J.; Ferrero, Ismael; Ferté, A.; Flaugher, B.; Fosalba, P.; Friedel, D.; Frieman, J.; García-Bellido, J.; Gatti, M.; Giannini, G.; Grandis, S.; Gruen, D.; Gruendl, Robert A.; Gutierrez, G.; Harrison, I.; Hill, J. C.; Hilton, M.; Hinton, S. R.; Hollowood, Devon L.; Honscheid, K.; Jain, Bhuvnesh; James, D. J.; Jarvis, M.; Kuehn, Kyler; Lin, M.; MacCrann, Niall; Marshall, J. L.; McCullough, J.; McMahon, J. J.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Moodley, K.; Mroczkowski, T.; Myles, J.; Næss, Sigurd Kirkevold; Navarro-Alsina, A.; Ogando, Ricardo L. C.; Page, Lyman A.; Palmese, A.; Pandey, S.; Partridge, Bruce; Pieres, A.; Plazas Malagón, Andrés A.; Porredon, A.; Prat, J.; Reichardt, C.; Reil, K.; Rodríguez-Monroy, M.; Rollins, R. P.; Romer, A. K.; Rykoff, Eli S.; Sanchez, E.; Sánchez, C.; Sanchez Cid, D.; Schaan, E.; Schubnell, M.; Secco, Lucas Frozza; Sevilla-Noarbe, Ignacio; Sheldon, E.; Shin, T.; Sifón, Cristóbal; Smith, M.; Staggs, Suzanne T.; Suchyta, E.; Swanson, Molly E. C.; Tarlé, G.; To, C.; Troxel, M. A.; Tutusaus, I.; Vavagiakis, Eve M.; Weaverdyck, N.; Weller, Jochen; Wiseman, P.; Wollack, E. J.; Yanny, B. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
  • Cosmological simulations of dwarfs: the need for ISM physics beyond SN feedback alone 
    Smith, Matthew C.; Sijacki, Debora; Shen, Sijing (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The dominant feedback mechanism in low-mass haloes is usually assumed to take the form of massive stars exploding as supernovae (SNe). We perform very high resolution cosmological zoom-in simulations of five dwarf galaxies ...
  • Cosmological simulations of screened modified gravity out of the static approximation: Effects on matter distribution 
    Llinares, Claudio; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    In the context of scalar tensor theories for gravity, there is a universally adopted hypothesis when running N-body simulations that time derivatives in the equation of motion for the scalar field are negligible. In this ...
  • Cosmological simulations of self-interacting Bose-Einstein condensate dark matter 
    Hartman, Stian Thomas Heimdal; Winther, Hans Arnold; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Fully 3D cosmological simulations of scalar field dark matter with self-interactions, also known as Bose-Einstein condensate dark matter, are performed using a set of effective hydrodynamic equations. These are derived ...
  • Cosmological simulations with disformally coupled symmetron fields 
    Hagala, Robert (Master thesis / Masteroppgave, 2015)
    In this thesis, we investigate statistical properties of the redshift zero matter distribution in disformal gravity through N-body simulations. The disformal model studied here is a conformally coupled field in a symmetron ...
  • Cosmological simulations with hydrodynamics of screened scalar-tensor gravity with non-universal coupling 
    Hammami, Amir; Mota, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Aims: We study the effects of letting dark matter and gas in the Universe couple to the scalar field of the symmetron model, a modified gravity theory, with varying coupling strength. We also search for a way to distinguish ...
  • Cosmological supersymmetric model of dark energy 
    Brax, P; Davis, A.-C.; Winther, Hans Arnold (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    Recently, a supersymmetric model of dark energy coupled to cold dark matter, the supersymmetron, has been proposed. In the absence of cold dark matter, the supersymmetron field converges to a supersymmetric minimum with a ...
  • Cosmology and fundamental physics with the Euclid satellite 
    Amendola, Luca; Appleby, Stephen; Avgoustidis, Anastasios; Bacon, David; Baker, Tessa; Baldi, Marco; Bartolo, Nicola; Blanchard, Alain; Bonvin, Camille; Borgani, Stefano; Branchini, Enzo; Burrage, Clare; Camera, Stefano; Carbone, Carmelita; Casarini, Luciano; Cropper, Mark; de Rham, Claudia; Dietrich, Jörg P.; Di Porto, Cinzia; Durrer, Ruth; Ealet, Anne; Ferreira, Pedro G.; Finelli, Fabio; García-Bellido, Juan; Giannantonio, Tommaso; Guzzo, Luigi; Heavens, Alan; Heisenberg, Lavinia; Heymans, Catherine; Hoekstra, Henk; Hollenstein, Lukas; Holmes, Rory; Hwang, Zhiqi; Jahnke, Knud; Kitching, Thomas D.; Koivisto, Tomi; Kunz, Martin; La Vacca, Giuseppe; Linder, Eric; March, Marisa; Marra, Valerio; Martins, Carlos; Majerotto, Elisabetta; Markovic, Dida; Marsh, David; Marulli, Federico; Massey, Richard; Mellier, Yannick; Montanari, Francesco; Mota, David; Nunes, Nelson J.; Percival, Will; Pettorino, Valeria; Porciani, Cristiano; Quercellini, Claudia; Read, Justin; Rinaldi, Massimiliano; Sapone, Domenico; Sawicki, Ignacy; Scaramella, Roberto; Skordis, Constantinos; Simpson, Fergus; Taylor, Andy; Thomas, Shaun; Trotta, Roberto; Verde, Licia; Vernizzi, Filippo; Vollmer, Adrian; Wang, Yun; Weller, Jochen; Zlosnik, Tom (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Euclid is a European Space Agency medium-class mission selected for launch in 2020 within the cosmic vision 2015–2025 program. The main goal of Euclid is to understand the origin of the accelerated expansion of the universe. ...
  • Cosmology at small scales: ultra-light dark matter and baryon cycles in galaxies 
    Mina, Mattia (Doctoral thesis / Doktoravhandling, 2020)
    The standard model of cosmology has been quite successful in describing how baryonic matter and dark matter cluster by means of gravity, forming the structures we can see today while looking at the sky, and it can reproduce ...
  • Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies 
    Abdalla, Elcio; Abellán, Guillermo Franco; Aboubrahim, Amin; Agnello, Adriano; Akarsu, Özgür; Akrami, Yashar; Alestas, George; Aloni, Daniel; Amendola, Luca; Anchordoqui, Luis A.; Anderson, Richard I.; Arendse, Nikki; Asgari, Marika; Ballardini, Mario; Barger, Vernon; Basilakos, Spyros; Batista, Ronaldo C.; Battistelli, Elia S.; Battye, Richard; Benetti, Micol; Benisty, David; Berlin, Asher; de Bernardis, Paolo; Berti, Emanuele; Bidenko, Bohdan; Birrer, Simon; Blakeslee, John P.; Boddy, Kimberly K.; Bom, Clecio R.; Bonilla, Alexander; Borghi, Nicola; Bouchet, François R.; Braglia, Matteo; Buchert, Thomas; Buckley-Geer, Elizabeth; Calabrese, Erminia; Caldwell, Robert R.; Camarena, David; Capozziello, Salvatore; Casertano, Stefano; Chen, Geoff C.-F.; Chluba, Jens; Chen, Angela; Chen, Hsin-Yu; Chudaykin, Anton; Cicoli, Michele; Copi, Craig J.; Courbin, Fred; Cyr-Racine, Francis-Yan; Czerny, Bożena; Dainotti, Maria; D'Amico, Guido; Davis, Anne-Christine; de Cruz Pérez, Javier; de Haro, Jaume; Delabrouille, Jacques; Denton, Peter B.; Dhawan, Suhail; Dienes, Keith R.; Di Valentino, Eleonora; Du, Pu; Eckert, Dominique; Escamilla-Rivera, Celia; Ferté, Agnès; Finelli, Fabio; Fosalba, Pablo; Freedman, Wendy L.; Frusciante, Noemi; Gaztañaga, Enrique; Giarè, William; Giusarma, Elena; Gómez-Valent, Adrià; Handley, Will; Harrison, Ian; Hart, Luke; Hazra, Dhiraj Kumar; Heavens, Alan; Heinesen, Asta; Hildebrandt, Hendrik; Hill, J. Colin; Hogg, Natalie B.; Holz, Daniel E.; Hooper, Deanna C.; Hosseininejad, Nikoo; Huterer, Dragan; Ishak, Mustapha; Ivanov, Mikhail M.; Jaffe, Andrew H.; Jang, In Sung; Jedamzik, Karsten; Jimenez, Raul; Joseph, Melissa; Joudaki, Shahab; Kamionkowski, Marc; Karwal, Tanvi; Kazantzidis, Lavrentios; Keeley, Ryan E.; Klasen, Michael; Komatsu, Eiichiro; Koopmans, Léon V.E.; Kumar, Suresh; Lamagna, Luca; Lazkoz, Ruth; Lee, Chung-Chi; Lesgourgues, Julien; Levi Said, Jackson; Lewis, Tiffany R.; L'Huillier, Benjamin; Lucca, Matteo; Maartens, Roy; Macri, Lucas M.; Marfatia, Danny; Marra, Valerio; Martins, Carlos Jose Amaro Parente; Masi, Silvia; Matarrese, Sabino; Mazumdar, Arindam; Melchiorri, Alessandro; Mena, Olga; Mersini-Houghton, Laura; Mertens, James; Milaković, Dinko; Minami, Yuto; Miranda, Vivian; Moreno-Pulido, Cristian; Moresco, Michele; Mota, David; Mottola, Emil; Mozzon, Simone; Muir, Jessica; Mukherjee, Ankan; Mukherjee, Suvodip; Naselsky, Pavel; Nath, Pran; Nesseris, Savvas; Niedermann, Florian; Notari, Alessio; Nunes, Rafael C.; Ó Colgáin, Eoin; Owens, Kayla A.; Özülker, Emre; Pace, Francesco; Paliathanasis, Andronikos; Palmese, Antonella; Pan, Supriya; Paoletti, Daniela; Perez Bergliaffa, Santiago E.; Perivolaropoulos, Leandros; Pesce, Dominic W.; Pettorino, Valeria; Philcox, Oliver H.E.; Pogosian, Levon; Poulin, Vivian; Poulot, Gaspard; Raveri, Marco; Reid, Mark J.; Renzi, Fabrizio; Riess, Adam G.; Sabla, Vivian I.; Salucci, Paolo; Salzano, Vincenzo; Saridakis, Emmanuel N.; Sathyaprakash, Bangalore S.; Schmaltz, Martin; Schöneberg, Nils; Scolnic, Dan; Sen, Anjan A.; Sehgal, Neelima; Shafieloo, Arman; Sheikh-Jabbari, M.M.; Silk, Joseph; Silvestri, Alessandra; Skara, Foteini; Sloth, Martin S.; Soares-Santos, Marcelle; Solà Peracaula, Joan; Songsheng, Yu-Yang; Soriano, Jorge F.; Staicova, Denitsa; Starkman, Glenn D.; Szapudi, István; Teixeira, Elsa M.; Thomas, Brooks; Treu, Tommaso; Trott, Emery; van de Bruck, Carsten; Vazquez, J. Alberto; Verde, Licia; Visinelli, Luca; Wang, Deng; Wang, Jian-Min; Wang, Shao-Jiang; Watkins, Richard; Watson, Scott; Webb, John K.; Weiner, Neal; Weltman, Amanda; Witte, Samuel J.; Wojtak, Radosław; Yadav, Anil Kumar; Yang, Weiqiang; Zhao, Gong-Bo; Zumalacárregui, Miguel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
  • Cosmology Large Angular Scale Surveyor (CLASS): pointing stability and beam measurements at 90, 150, and 220 GHz 
    Datta, Rahul; Brewer, Michael K.; Couto, Jullianna D.; Eimer, Joseph R.; Li, Yunyang; Xu, Zhilei; Appel, John W.; Bustos, Ricardo; Chuss, David T.; Cleary, Joseph; Dahal, Sumit; Essinger-Hileman, Thomas; Iuliano, Jeffrey; Marriage, Tobias A.; Núñez, Carolina; Petroff, Matthew A.; Rostem, Karwan; Watts, Duncan; Wollack, Edward J. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    The Cosmology Large Angular Scale Surveyor (CLASS) telescope array surveys 75% of the sky from the Atacama desert in Chile at frequency bands centered near 40, 90, 150, and 220 GHz. CLASS measures the largest-angular scale ...
  • Cosmology of Scalar Field Dark Matter with Self-Interactions 
    Hartman, Stian Thomas Heimdal (Doctoral thesis / Doktoravhandling, 2022)
    In the standard model of the universe, the presence of a cold and dark form of matter is essential for explaining a wide range of observables, from the very largest scales such as the microwave background radiation, to ...
  • Cosmology of Symmetron Mass-Varying Neutrinos 
    Frontéri, Paul Anthony (Master thesis / Masteroppgave, 2014)
    In this thesis we investigate a dynamical cosmological constant called the quintessence. Quintessence is a scalar field varying in both space and time following a chosen potential. To explain the coincidence problem, e.g. ...
  • Cosmology with a continuous tower of scalar fields 
    Jimenez, Jose Beltran; Mota, David; Santos, Paulo Guilherme dos (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    We study the cosmological evolution for a universe in the presence of a continuous tower of massive scalar fields which can drive the current phase of accelerated expansion of the universe and, in addition, can contribute ...
  • Cosmology with the Einstein telescope: No Slip Gravity model and redshift specifications 
    Mitra, Ayan; Misfud, Jurgen; Mota, David; Parkinson, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The Einstein telescope and other third-generation interferometric detectors of gravitational waves are projected to be operational post 2030. The cosmological signatures of gravitational waves would undoubtedly shed light ...
  • Crash and recovery of the potential in a toroidal plasma column, as observed by generalized conditional sampling 
    Fredriksen, Åshild; Pecseli, Hans L.; Trulsen, Jan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2008)
    Conditional sampling methods are generalized by applying a matched-filter on the reference signal. This generalized method is illustrated by data obtained in a magnetized toroidal plasma without rotational transform. By ...
  • CRISPRED: A data pipeline for the CRISP imaging spectropolarimeter 
    de la Cruz Rodriguez, Jaime; Löfdahl, M.G.; Sütterlin, P.; Hillberg, T.; Rouppe, Van Der Voort Luc (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    The production of science-ready data from major solar telescopes requires expertise beyond that of the typical observer. This is a consequence of the increasing complexity of instruments and observing sequences, which ...
  • Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST) 
    Rast, Mark P.; Bello González, Nazaret; Bellot Rubio, Luis R.; Cao, Wenda; Cauzzi, Gianna; DeLuca, Edward; De Pontieu, Bart Walter; Fletcher, Lyndsay; Gibson, Sarah E.; Judge, Philip G.; Katsukawa, Yukio; Kazachenko, Maria D.; Khomenko, Elena; Landi, Enrico; Martínez Pillet, Valentín; Petrie, Gordon J. D.; Qiu, Jiong; Rachmeler, Laurel A.; Rempel, Matthias; Schmidt, Wolfgang; Scullion, Eamon; Sun, Xudong; Welsch, Brian T.; Andretta, Vincenzo; Antolin, Patrick; Ayres, Thomas R.; Balasubramaniam, K. S.; Ballai, Istvan; Berger, Thomas E.; Bradshaw, Stephen J.; Campbell, Ryan J.; Carlsson, Mats; Casini, Roberto; Centeno, Rebecca; Cranmer, Steven R.; Criscuoli, Serena; DeForest, Craig; Deng, Yuanyong; Erdélyi, Robertus; Fedun, Viktor; Fischer, Catherine E.; González Manrique, Sergio Javier; Hahn, Michael; Harra, Louise K.; de Jorge Henriques, Vasco Manuel; Hurlburt, Neal E.; Jaeggli, Sarah A.; Jafarzadeh, Shahin; Jain, Rekha; Jefferies, Stuart M.; Keys, Peter H.; Kowalski, Adam F.; Kuckein, Christoph; Kuhn, Jeffrey R.; Kuridze, David; Liu, Jiajia; Liu, Wei; Longcope, Dana; Mathioudakis, Mihalis; McAtee, R. T. James; McIntosh, Scott W.; McKenzie, David E.; Miralles, Mari Paz; Morton, Richard J.; Muglach, Karin; Nelson, Chris J.; Panesar, Navdeep K.; Parenti, Susanna; Parnell, Clare E.; Poduval, Bala; Reardon, Kevin P.; Reep, Jeffrey W.; Schad, Thomas A.; Schmit, Donald; Sharma, Rahul; Socas-Navarro, Hector; Srivastava, Abhishek Kumar; Sterling, Alphonse C.; Suematsu, Yoshinori; Tarr, Lucas A.; Tiwari, Sanjiv; Tritschler, Alexandra; Verth, Gary; Vourlidas, Angelos; Wang, Haimin; Wang, Yi-Ming (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    The National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand, and model the basic physical processes that control the structure and dynamics of the Sun ...