Browsing Institutt for teoretisk astrofysikk by Author "Næss, Sigurd Kirkevold"

Now showing items 1-12 of 12

  • 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 ...
  • 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)
  • Kinematic Sunyaev-Zel'dovich effect with ACT, DES, and BOSS: A novel hybrid estimator 
    Mallaby-Kay, M.; Amodeo, S.; Hill, J.C.; Aguena, M.; Allam, S.; Alves, O.; Annis, J.; Battaglia, N.; Battistelli, E.S.; Baxter, E.J.; Bechtol, K.; Becker, M.R.; Bertin, E.; Bond, J.R.; Brooks, D.; Calabrese, E.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Choi, A.; Crocce, M.; da Costa, L.N.; Pereira, M.E.S.; De Vicente, J.; Desai, S.; Dietrich, J.P.; Doel, P.; Doux, C.; Drlica-Wagner, A.; Dunkley, J.; Elvin-Poole, J.; Everett, S.; Ferraro, S.; Ferrero, Ismael; Frieman, J.; Gallardo, P.A.; García-Bellido, J.; Giannini, G.; Gruen, D.; Gruendl, R.A.; Gutierrez, G.; Hinton, S.R.; Hollowood, D.L.; James, D.J.; Kosowsky, A.; Kuehn, K.; Lokken, M.; Louis, T.; Marshall, J.L.; McMahon, J.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Moodley, K.; Mroczkowski, T.; Næss, Sigurd Kirkevold; Niemack, M.D.; Ogando, R.L.C.; Page, L.; Pandey, S.; Pieres, A.; Plazas Malagón, A.A.; Raveri, M.; Rodriguez-Monroy, M.; Rykoff, E.S.; Samuroff, S.; Sanchez, E.; Schaan, E.; Sevilla-Noarbe, I.; Sheldon, E.; Sifón, C.; Smith, M.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Tarle, G.; To, C.; Vargas, C.; Vavagiakis, E.M.; Weaverdyck, N.; Weller, J.; Wiseman, P.; Yanny, B. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The kinematic and thermal Sunyaev-Zel’dovich (kSZ and tSZ) effects probe the abundance and thermodynamics of ionized gas in galaxies and clusters. We present a new hybrid estimator to measure the kSZ effect by combining ...
  • Maximum likelihood analysis with the Q/U Imaging ExperimenT 
    Næss, Sigurd Kirkevold (Doctoral thesis / Doktoravhandling, 2012)
  • THE Q/U IMAGING EXPERIMENT: POLARIZATION MEASUREMENTS of the GALACTIC PLANE at 43 and 95 GHz 
    Ruud, Tone Melvær; Fuskeland, Unni; Wehus, Ingunn Kathrine; Vidal, M.; Araujo, D.; Bischoff, C.; Buder, I.; Chinone, Y.; Cleary, K.; Dumoulin, R. N.; Kusaka, A.; Monsalve, R.; Næss, Sigurd Kirkevold; Newburgh, L. B.; Reeves, R. A.; Zwart, J. T. L.; Bronfman, L.; Davies, R. D.; Davis, R.; Dickinson, C.; Eriksen, Hans Kristian Kamfjord; Gaier, T.; Gundersen, J. O.; Hasegawa, M.; Hazumi, M.; Huffenberger, K. M.; Jones, M. E.; Lawrence, C. R.; Leitch, E. M.; Limon, M.; Miller, A. D.; Pearson, T. J.; Piccirillo, L.; Radford, S. J. E.; Readhead, A. C. S.; Samtleben, D.; Seiffert, M.; Shepherd, M. C.; Staggs, S. T.; Tajima, O.; Thompson, K. L. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present polarization observations of two Galactic plane fields centered on Galactic coordinates (l, b) = (0°, 0°) and (329°, 0°) at both Q (43 GHz) and W bands (95 GHz), covering between 301 and 539 square degrees ...
  • SPATIAL VARIATIONS IN THE SPECTRAL INDEX OF POLARIZED SYNCHROTRON EMISSION IN THE 9 yr WMAP SKY MAPS 
    Fuskeland, Unni; Wehus, Ingunn Kathrine; Eriksen, Hans Kristian Kamfjord; Næss, Sigurd Kirkevold (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
    We estimate the spectral index, β, of polarized synchrotron emission as observed in the 9 yr Wilkinson Microwave Anisotropy Probe sky maps using two methods, linear regression ("T-T plot") and maximum likelihood. We partition ...
  • The Atacama Cosmology Telescope: Galactic Dust Structure and the Cosmic PAH Background in Cross-correlation with WISE 
    Córdova Rosado, Rodrigo; Hensley, Brandon S.; Clark, Susan E.; Duivenvoorden, Adriaan J.; Atkins, Zachary; Battistelli, Elia Stefano; Choi, Steve K.; Dunkley, Jo; Hervías-Caimapo, Carlos; Li, Zack; Louis, Thibaut; Næss, Sigurd Kirkevold; Page, Lyman A.; Partridge, Bruce; Sifón, Cristóbal; Staggs, Suzanne T.; Vargas, Cristian; Wollack, Edward J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    We present a cross-correlation analysis between 1´resolution total intensity and polarization observations from the Atacama Cosmology Telescope (ACT) at 150 and 220 GHz and 15'' mid-infrared photometry from the Wide-field ...
  • The Atacama Cosmology Telescope: map-based noise simulations for DR6 
    Atkins, Zachary; Duivenvoorden, Adriaan J.; Coulton, William R.; Qu, Frank J.; Aiola, Simone; Calabrese, Erminia; Chesmore, Grace E.; Choi, Steve K.; Devlin, Mark J.; Dunkley, Jo; Hervías-Caimapo, Carlos; Guan, Yilun; La Posta, Adrien; Li, Zack; Louis, Thibaut; Madhavacheril, Mathew S.; Moodley, Kavilan; Næss, Sigurd Kirkevold (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract The increasing statistical power of cosmic microwave background (CMB) datasets requires a commensurate effort in understanding their noise properties. The noise in maps from ground-based instruments is ...
  • The Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids 
    Orlowski-Scherer, John; Venterea, Ricco C.; Battaglia, Nicholas; Næss, Sigurd Kirkevold; Bhandarkar, Tanay; Biermann, Emily; Calabrese, Erminia; Devlin, Mark; Dunkley, Jo; Hervías-Caimapo, Carlos; Gallardo, Patricio A.; Hilton, Matt; Hincks, Adam D.; Knowles, Kenda; Li, Yaqiong; McMahon, Jeffrey J; Niemack, Michael D.; Page, Lyman A.; Partridge, Bruce; Salatino, Maria; Sievers, Jonathan; Sifón, Cristóbal; Staggs, Suzanne; van Engelen, Alexander; Vargas, Cristian; Vavagiakis, Eve M.; Wollack, Edward J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Abstract We present fluxes and light curves for a population of asteroids at millimeter wavelengths, detected by the Atacama Cosmology Telescope (ACT) over 18,000 deg 2 of the sky using data from 2017 to 2021. ...
  • The Atacama Cosmology Telescope: Systematic Transient Search of 3 Day Maps 
    Li, Yaqiong; Biermann, Emily; Næss, Sigurd Kirkevold; Aiola, Simone; An, Rui; Battaglia, Nicholas; Bhandarkar, Tanay; Calabrese, Erminia; Choi, Steve K.; Crowley, Kevin T.; Devlin, Mark; Duell, Cody J.; Duff, Shannon M.; Dunkley, Jo; Dünner, Rolando; Gallardo, Patricio A.; Guan, Yilun; Hervías-Caimapo, Carlos; Hincks, Adam D.; Hubmayr, Johannes; Huffenberger, Kevin M.; Hughes, John P.; Kosowsky, Arthur; Louis, Thibaut; Mallaby-Kay, Maya; McMahon, Jeff; Nati, Federico; Niemack, Michael D.; Orlowski-Scherer, John; Page, Lyman; Salatino, Maria; Sifón, Cristóbal; Staggs, Suzanne T.; Vargas, Cristian; Vavagiakis, Eve M.; Wang, Yuhan; Wollack, Edward J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract We conduct a systematic search for transients in 3 yr of data (2017–2019) from the Atacama Cosmology Telescope (ACT). ACT covers 40% of the sky at three bands spanning from 77–277 GHz. Analysis of 3 day ...
  • The Simons Observatory: Beam Characterization for the Small Aperture Telescopes 
    Dachlythra, Nadia; Duivenvoorden, Adriaan J.; Gudmundsson, Jon E.; Hasselfield, Matthew; Coppi, Gabriele; Adler, Alexandre E.; Alonso, David; Azzoni, Susanna; Chesmore, Grace E.; Fabbian, Giulio; Ganga, Ken; Gerras, Remington G.; Jaffe, Andrew H.; Johnson, Bradley R.; Keating, Brian; Keskitalo, Reijo; Kisner, Theodore S.; Krachmalnicoff, Nicoletta; Lungu, Marius; Matsuda, Frederick; Næss, Sigurd Kirkevold; Page, Lyman; Puddu, Roberto; Puglisi, Giuseppe; Simon, Sara M.; Teply, Grant; Tsan, Tran; Wollack, Edward J.; Wolz, Kevin; Xu, Zhilei (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2024)
    Abstract We use time-domain simulations of Jupiter observations to test and develop a beam reconstruction pipeline for the Simons Observatory Small Aperture Telescopes. The method relies on a mapmaker that estimates ...
  • Wide field high cadence CMB survey designs for Chilean telescopes 
    Ebina, Haruki; Keskitalo, Reijo; Borrill, Julian; Choi, Steve K.; Kisner, Theodore S.; Næss, Sigurd Kirkevold; Niemack, Michael D.; Stevens, Jason R. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    We present new wide field survey strategies for Chilean Large Aperture Telescopes (LAT) measuring the Cosmic Microwave Background (CMB), which we call Sinusoidal Modulated High Cadence Survey Strategies. The strategies ...