Now showing items 1222-1241 of 1243

  • 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. ...
  • Poirier, Nicolas Aurelien Corentin; Réville, Victor; Rouillard, Alexis P.; Kouloumvakos, Athanasios; Valette, Emeline (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Aims. We analyse the signature and origin of transient structures embedded in the slow solar wind, and observed by the Wide-Field Imager for Parker Solar Probe (WISPR) during its first ten passages close to the Sun. WISPR ...
  • Wetzell, V.; Jeltema, T.E.; Hegland, B.; Everett, S.; Giles, P.A.; Wilkinson, R.; Farahi, A.; Costanzi, M.; Hollowood, D.L.; Upsdell, E.; Saro, A.; Myles, J.; Bermeo, A.; Bhargava, S.; Collins, C.A.; Cross, D.; Eiger, O.; Gardner, G.; Hilton, M.; Jobel, J.; Kelly, P.; Laubner, D.; Liddle, A.R.; Mann, R.G.; Martinez, V.; Mayers, J.; McDaniel, A.; Romer, A.K.; Rooney, P.; Sahlen, M.; Stott, J.; Swart, A.; Turner, D.J.; Viana, P. T. P; Abbott, T. M. C; Aguena, M.; Allam, S.; Andrade-Oliveira, F.; Annis, J.; Asorey, J.; Bertin, E.; Burke, D.L.; Calcino, J.; Carnero Rosell, A.; Carollo, D.; Carrasco Kind, M.; Carretero, J.; Choi, A.; Crocce, M.; da Costa, L.N.; Pereira, M. E. S; Davis, T.M.; De Vicente, J.; Desai, S.; Diehl, H.T.; Dietrich, J.P.; Doel, P.; Evrard, A.E.; Ferrero, Ismael; Fosalba, P.; Frieman, J.; García-Bellido, J.; Gaztanaga, E.; Glazebrook, K.; Gruen, D.; Gruendl, R.A.; Gschwend, J.; Gutierrez, G.; Hinton, S.R.; Honscheid, K.; James, D.J.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; Lewis, G.F.; Lidman, C.; Lima, M.; Maia, M. A. G; Marshall, J.L.; Melchior, P.; Menanteau, F.; Miquel, R.; Morgan, R.; Palmese, A.; Paz-Chinchón, F.; Plazas Malagón, A.A:; Sanchez, E.; Scarpine, V.; Serrano, S.; Sevilla-Noarbe, I.; Smith, M.; Soares-Santos, M.; Suchyta, E.; Tarle, G.; Thomas, D.; Tucker, B.E.; Tucker, D.L.; Varga, T.N.; Weller, J. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    ABSTRACT We measure the velocity dispersions of clusters of galaxies selected by the red-sequence Matched-filter Probabilistic Percolation (redMaPPer) algorithm in the first three years of data from the Dark ...
  • Massara, Elena; Percival, Will J.; Dalal, Neal; Nadathur, Seshadri; Radinovic, Sladana; Winther, Hans Arnold; Woodfinden, Alex (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    ABSTRACT The velocity profile of galaxies around voids is a key ingredient for redshift space distortion (RSD) measurements made using the void–galaxy correlation function. In this paper, we use simulations to ...
  • Dahal, Sumit; Brewer, Michael K.; Appel, John W.; Ali, Aamir; Bennett, Charles L.; Bustos, Ricardo; Chan, Manwei; Chuss, David T.; Cleary, Joseph; Couto, Jullianna Denes; Datta, Rahul; Denis, Kevin L.; Eimer, Joseph; Espinoza, Francisco; Essinger-Hileman, Thomas; Gothe, Dominik; Harrington, Kathleen; Iuliano, Jeffrey; Karakla, John; Marriage, Tobias A.; Novack, Sasha; Núñez, Carolina; Padilla, Ivan L.; Parker, Lucas; Petroff, Matthew A.; Reeves, Rodrigo; Rhoades, Gary; Rostem, Karwan; Valle, Deniz A. N.; Watts, Duncan; Weiland, Janet L.; Wollack, Edward J.; Xu, Zhilei (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract Using the Cosmology Large Angular Scale Surveyor, we measure the disk-averaged absolute Venus brightness temperature to be 432.3 ± 2.8 K and 355.6 ± 1.3 K in the Q and W frequency bands centered at 38.8 ...
  • Hartoog, O. E.; Malesani, D; Fynbo, J.P.U.; Goto, T; Krühler, T.; Vreeswijk, P. M.; De Cia, A.; Xu, D.; Møller, P.; Covino, S; D'Elia, V; Flores, H; Goldoni, P.; Hjorth, Jens; Jakobsson, P.; Krogager, J.-K.; Kaper, L.; Ledoux, C.; Levan, A. J.; Milvang-Jensen, B; Sollerman, J.; Sparre, M.; Tagliaferri, G; Tanvir, N. R.; de Ugarte Postigo, A.; Vergani, S. D.; Wiersema, K; Datson, J.; Salinas, R; Mikkelsen, Kristin; Aghanim, N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Context: The reionisation of the Universe is a process that is thought to have ended around z ~ 6, as inferred from spectroscopy of distant bright background sources, such as quasars (QSO) and gamma-ray burst (GRB) afterglows. ...
  • Kato, Yoshiaki; Wedemeyer, Sven (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Solar “magnetic tornadoes” are produced by rotating magnetic field structures that extend from the upper convection zone and the photosphere to the corona of the Sun. Recent studies show that these kinds of rotating features ...
  • Tziotziou, K.; Scullion, Eamon; Shelyag, S.; Steiner, O.; Khomenko, E.; Tsiropoula, G.; Canivete Cuissa, S.; Wedemeyer, Sven; Kontogiannis, I.; Yadav, N.; Kitiashvili, I.N.; Skirvin, S.J.; Dakanalis, I.; Kosovichev, A.G.; Fedun, V. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Vortex flows, related to solar convective turbulent dynamics at granular scales and their interplay with magnetic fields within intergranular lanes, occur abundantly on the solar surface and in the atmosphere above. Their ...
  • Maharana, Siddharth; Anche, Ranya M.; Ramaprakash, Anamparambu N.; Joshi, Bhushan; Basyrov, Artem; Blinov, Dmitry; Casadio, Carolina; Deka, Kishan; Eriksen, Hans Kristian Kamfjord; Gosh, Tuhin; Gjerløw, Eirik; Kypriotakis, John A.; Kiehlmann, Sebastian; Mandarakas, Nikolaos; Panopoulou, Georgia V.; Papadaki, Katerina; Pavlidou, Vasiliki; Pearson, Timothy J.; Pelgrims, Vincent; Potter, Stephen B.; Readhead, Anthony C. S.; Skalidis, Raphael; Svalheim, Trygve Leithe; Tassis, Konstantinos; Wehus, Ingunn Kathrine (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    The Wide-Area Linear Optical Polarimeter (WALOP)-South instrument is an upcoming wide-field and high accuracy optical polarimeter to be used as a survey instrument for carrying out the Polar-Areas Stellar Imaging in ...
  • Maharana, Siddharth; Kypriotakis, John A.; Ramaprakash, Anamparambu N.; Rajarshi, Chaitanya; Anche, Ranya M.; Shrish, Shrish; Blinov, Dmitry; Eriksen, Hans Kristian Kamfjord; Ghosh, Tuhin; Gjerløw, Eirik; Mandarakas, Nikolaos; Panopoulou, Georgia V.; Pavlidou, Vasiliki; Pearson, Timothy J.; Pelgrims, Vincent; Potter, Stephen B.; Readhead, Anthony C. S.; Skalidis, Raphael; Tassis, Konstantinos; Wehus, Ingunn Kathrine (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
    The Wide-Area Linear Optical Polarimeter (WALOP)-South instrument will be mounted on the 1-m South African Astronomical Observatory telescope in South Africa as part of the Polar-Areas Stellar Imaging Polarization High ...
  • Maharana, Siddharth; Kypriotakis, John A.; Ramprakash, A. N.; Khodade, Pravin; Rajarshi, Chaitanya; Joshi, Bhushan; Chordia, Pravin; Anche, Ranya M.; Mishra, Shrish; Blinov, Dmitry; Eriksen, Hans Kristian Kamfjord; Ghosh, Tuhin Subhra; Gjerløw, Eirik; Mandarakas, Nikolaos; Panopoulou, Georgia V.; Pavlidou, Vasiliki; Pearson, Timothy J.; Pelgrims, Vincent; Potter, Stephen B.; Readhead, Anthony C. S.; Skalidis, Raphail; Tassis, Konstantinos; Wehus, Ingunn Kathrine (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
    WALOP (Wide-Area Linear Optical Polarimeter)-South, to be mounted on the 1m SAAO telescope in South Africa, is first of the two WALOP instruments currently under development for carrying out the PASIPHAE survey. Scheduled ...
  • Jess, David B.; Jafarzadeh, Shahin; Keys, Peter H.; Stangalini, Marco; Verth, Gary; Grant, Samuel D. T. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Waves and oscillations have been observed in the Sun’s atmosphere for over half a century. While such phenomena have readily been observed across the entire electromagnetic spectrum, spanning radio to gamma-ray sources, ...
  • Radovich, M.; Formicola, I.; Meneghetti, M.; Bartalucci, I.; Bourdin, H.; Mazzotta, P.; Moscardini, L.; Ettori, S.; Arnaud, M.; Pratt, G. W.; Aghanim, N.; Dahle, Håkon; Douspis, M.; Pointecouteau, E.; Grado, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We present a mass estimate of the Planck-discovered cluster PLCK G100.2-30.4, derived from a weak lensing analysis of deep Subaru griz images. We perform a careful selection of the background galaxies using the multi-band ...
  • Shaaban, Mohamed M.; Gill, Ajay S.; McCleary, Jacqueline; Massey, Richard; Benton, Steven J.; Brown, Anthony M.; Damaren, Christopher J.; Eifler, Tim; Fraisse, Aurelien A.; Everett, Spencer; Galloway, Mathew; Henderson, Michael; Holder, Bradley; Huff, Eric M.; Jauzac, Mathilde; Jones, William C.; Lagattuta, David; Leung, Jason S.-Y.; Li, Lun; Luu, Thuy Vy T.; Nagy, Johanna M.; Netterfield, C. Barth; Redmond, Susan F.; Rhodes, Jason D.; Robertson, Andrew; Schmoll, Jürgen; Sirks, Ellen; Sivanandam, Suresh (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract The statistical power of weak lensing measurements is principally driven by the number of high-redshift galaxies whose shapes are resolved. Conventional wisdom and physical intuition suggest this is ...
  • De Pontieu, Bart Walter; Martinez-Sykora, Juan; Chintzoglou, Georgios (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Spicules are the most ubuiquitous type of jets in the solar atmosphere. The advent of high-resolution imaging and spectroscopy from the Interface Region Imaging Spectrograph (IRIS) and ground-based observatories has revealed ...
  • Carlsson, Mats; Leenaarts, Jorrit; De Pontieu, Bart Walter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    We analyze observations from the Interface Region Imaging Spectrograph of the Mg ii k line, the Mg ii UV subordinate lines, and the O i 135.6 $\mathrm{nm}$ line to better understand the solar plage chromosphere. We also ...
  • de Moortel, Ineke; Howson, Thomas A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Why the atmosphere of the Sun is orders of magnitudes hotter than its surface is a long standing question in solar physics. Over the years, many studies have looked at the potential role of magnetohydrodynamic ...
  • De Pontieu, Bart Walter; McIntosh, Scott; Martinez-Sykora, Juan; Peter, Hardi; Mendes Domingos Pereira, Tiago (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    Spectral observations of the solar transition region (TR) and corona show broadening of spectral lines beyond what is expected from thermal and instrumental broadening. The remaining non-thermal broadening is significant ...
  • Zirker, Jack B.; Engvold, Oddbjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    © 2017 American Institute of Physics.
  • 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 ...