Navegação Ciências Exatas e da Terra por Assunto "Gravitational lensing: strong"

Resultados 1-6 de 6

    • Discovery of two gravitationally lensed quasars in the Dark Energy Survey 

      Agnello, Adriano; Treu, Tommaso; Ostrovski, F.; Schechter, Paul L.; Buckley-Geer, Elizabeth; Lin, H.; Auger, Matthew W.; Courbin, Frederic Y. M.; Fassnacht, Christopher D.; Frieman, Joshua A.; Kuropatkin, Nikolay P.; Marshall, Phillip J.; McMahon, Richard G.; Meylan, Georges; More, Andrew Mills; Suyu, Sherry; Rusu, Cristian Eduard; Finley, David A.; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Annis, James T.; Banerji, M.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Costa, Luiz N. da; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Doel, Peter; Eifler, Tim; Estrada, Juan; Fausti Neto, Angelo; Flaugher, Brenna; Fosalba Vela, Pablo; Gerdes, David W.; Gruen, Daniel; Gutierrez, Gaston R.; Honscheid, K.; James, David J.; Kent, Stephen M.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Lima, Marcos Vinicius Borges Teixeira; Maia, Marcio Antonio Geimba; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Melchior, Peter M.; Miller, Christopher J.; Miquel, Ramon; Nichol, Robert C.; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Reil, Kevin; Romer, Anita K.; Roodman, Aaron; Sako, Masao; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Tucker, Douglas L.; Walker, Alistair; Wechsler, Risa H.; Zhang, Yuanyuan (2015) [Artigo de periódico]
      We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey Explorer (WISE) based on their multiband photometry and extended ...

    • On the accuracy of the perturbative approach for strong lensing : local distortion for pseudo-elliptical models 

      Dúmet-Montoya, Habib S.; Caminha, Gabriel Bartosch; Moraes, Bruno Azevedo Lemos; Makler, Martín; Gill, Mandeep S. S.; Santiago, Basilio Xavier (2013) [Artigo de periódico]
      The perturbative approach (PA) introduced by Alard provides analytic solutions for gravitational arcs by solving the lens equation linearized around the Einstein ring solution. This is a powerful method for lens inversion ...

    • A simple prescription for simulating and characterizing gravitational arcs 

      Furlanetto, Cristina; Santiago, Basilio Xavier; Makler, Martín; De Bom, Clécio Roque; Brandt, Carlos Henrique; Fausti Neto, Angelo; Ferreira, Pedro da Cunha; Costa, Luiz N. da; Maia, Marcio Antonio Geimba (2013) [Artigo de periódico]
      Simple models of gravitational arcs are crucial for simulating large samples of these objects with full control of the input parameters. These models also provide approximate and automated estimates of the shape and structure ...

    • The DES Bright Arcs Survey : hundreds of candidate strongly lensed galaxy systems from the Dark Energy Survey Science Verification and Year 1 observations 

      Diehl, H. Thomas; Santiago, Basilio Xavier; Walker, Alistair; DES Collaboration (2017) [Artigo de periódico]
      We report the results of searches for strong gravitational lens systems in the Dark Energy Survey (DES) Science Verification and Year 1 observations. The Science Verification data span approximately 250 sq. deg. with a ...

    • The SDSS-III BOSS quasar lens survey : discovery of 13 gravitationally lensed quasars 

      More, Anupreeta; Oguri, Masamune; Kayo, Issha; Zinn, Joel C.; Strauss, Michael A.; Santiago, Basilio Xavier; Mosquera, Ana Maria; Inada, Naohisa; Kochanek, C.S.; Rusu, Cristian Eduard; Brownstein, Joel R.; Costa, Luiz N. da; Kneib, J.P.; Maia, Marcio Antonio Geimba; Quimby, Robert M.; Schneider, D.P.; Streblyanska, Alina; York, Donald G. (2016) [Artigo de periódico]
      We report the discovery of 13 confirmed two-image quasar lenses from a systematic search for gravitationally lensed quasars in the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS). We adopted a methodology similar ...

    • The SOAR Gravitational Arc Survey – I. Survey overview and photometric catalogues 

      Furlanetto, Cristina; Santiago, Basilio Xavier; Makler, Martín; Cypriano, Eduardo Serra; Caminha, Gabriel Bartosch; Pereira, Maria Elidaiana da Silva; Fausti Neto, Angelo; Estrada, Juan; Lin, H.; Hao, Jiangang; McKay, Timothy A.; Costa, Luiz N. da; Maia, Marcio Antonio Geimba (2013) [Artigo de periódico]
      We present the first results of the SOAR (Southern Astrophysical Research) Gravitational Arc Survey (SOGRAS). The survey imaged 47 clusters in two redshift intervals centred at z = 0.27 and z = 0.55, targeting the richest ...