Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Roodman, Aaron"'
Autor:
Demirbozan, Umut, Nadathur, Seshadri, Ferrero, Ismael, Fosalba, Pablo, Kovacs, Andras, Miquel, Ramon, Davies, Christopher T., Pandey, Shivam, Adamow, Monika, Bechtol, Keith, Drlica-Wagner, Alex, Gruendl, Robert, Hartley, Will, Pieres, Adriano, Ross, Ashley, Rykoff, Eli, Sheldon, Erin, Yanny, Brian, Abbott, Tim, Aguena, Michel, Allam, Sahar, Alves, Otavio, Bacon, David, Bertin, Emmanuel, Bocquet, Sebastian, Brooks, David, Rosell, Aurelio Carnero, Carretero, Jorge, Cawthon, Ross, da Costa, Luiz, Pereira, Maria Elidaiana da Silva, De Vicente, Juan, Desai, Shantanu, Doel, Peter, Everett, Spencer, Flaugher, Brenna, Friedel, Douglas, Frieman, Josh, Gatti, Marco, Gaztanaga, Enrique, Giannini, Giulia, Gutierrez, Gaston, Hinton, Samuel, Hollowood, Devon L., James, David, Jeffrey, Niall, Kuehn, Kyler, Lahav, Ofer, Lee, Sujeong, Marshall, Jennifer, Mena-Fernández, Juan, Mohr, Joe, Myles, Justin, Ogando, Ricardo, Malagón, Andrés Plazas, Roodman, Aaron, Sanchez, Eusebio, Sevilla, Ignacio, Smith, Mathew, Soares-Santos, Marcelle, Suchyta, Eric, Swanson, Molly, Tarle, Gregory, Weaverdyck, Noah, Weller, Jochen, Wiseman, Philip
$ $Low density cosmic voids gravitationally lens the cosmic microwave background (CMB), leaving a negative imprint on the CMB convergence $\kappa$. This effect provides insight into the distribution of matter within voids, and can also be used to stu
Externí odkaz:
http://arxiv.org/abs/2404.18278
Autor:
Broughton, Alex, Utsumi, Yousuke, Malagón, Andrés Plazas, Waters, Christopher, Lage, Craig, Snyder, Adam, Rasmussen, Andrew, Marshall, Stuart, Chiang, Jim, Murgia, Simona, Roodman, Aaron
Thick, fully depleted charge-coupled devices (CCDs) are known to exhibit non-linear behavior at high signal levels due to the dynamic behavior of charges collecting in the potential wells of pixels, called the brighter-fatter effect (BFE). This parti
Externí odkaz:
http://arxiv.org/abs/2312.03115
Autor:
Esteves, Johnny H., Utsumi, Yousuke, Snyder, Adam, Schutt, Theo, Broughton, Alex, Trbalic, Bahrudin, Mau, Sidney, Rasmussen, Andrew, Malagón, Andrés A. Plazas, Bradshaw, Andrew, Marshall, Stuart, Digel, Seth, Chiang, James, Soares-Santos, Marcelle, Roodman, Aaron
The Vera C. Rubin Observatory's LSST Camera (LSSTCam) pixel response has been characterized using laboratory measurements with a grid of artificial stars. We quantify the contributions to photometry, centroid, point-spread function size, and shape me
Externí odkaz:
http://arxiv.org/abs/2308.00919
Autor:
Park, Ji Won, Birrer, Simon, Ueland, Madison, Cranmer, Miles, Agnello, Adriano, Wagner-Carena, Sebastian, Marshall, Philip J., Roodman, Aaron, Collaboration, the LSST Dark Energy Science
We present a Bayesian graph neural network (BGNN) that can estimate the weak lensing convergence ($\kappa$) from photometric measurements of galaxies along a given line of sight. The method is of particular interest in strong gravitational time delay
Externí odkaz:
http://arxiv.org/abs/2211.07807
Autor:
Blum, Bob, Digel, Seth W., Drlica-Wagner, Alex, Habib, Salman, Heitmann, Katrin, Ishak, Mustapha, Jha, Saurabh W., Kahn, Steven M., Mandelbaum, Rachel, Marshall, Phil, Newman, Jeffrey A., Roodman, Aaron, Stubbs, Christopher W.
The Vera C. Rubin Observatory will begin the Legacy Survey of Space and Time (LSST) in 2024, spanning an area of 18,000 square degrees in six bands, with more than 800 observations of each field over ten years. The unprecedented data set will enable
Externí odkaz:
http://arxiv.org/abs/2203.07220
Autor:
Park, Ji Won, Villar, Ashley, Li, Yin, Jiang, Yan-Fei, Ho, Shirley, Lin, Joshua Yao-Yu, Marshall, Philip J., Roodman, Aaron
Among the most extreme objects in the Universe, active galactic nuclei (AGN) are luminous centers of galaxies where a black hole feeds on surrounding matter. The variability patterns of the light emitted by an AGN contain information about the physic
Externí odkaz:
http://arxiv.org/abs/2106.01450
Autor:
Snyder, Adam, Barrau, Aurelien, Bradshaw, Andrew, Bowdish, Boyd, Chiang, James, Combet, Celine, Digel, Seth, Dubois, Richard, Eraud, Ludovic, Juramy, Claire, Lage, Craig, Lange, Travis, Migliore, Myriam, Nomerotski, Andrei, O'Connor, Paul, Park, HyeYun, Rasmussen, Andrew, Reil, Kevin, Roodman, Aaron, Shestakov, Adrian, Utsumi, Yousuke, Wood, Duncan
Publikováno v:
Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX; 1145439 (2020)
Electro-optical testing and characterization of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) Camera focal plane, consisting of 205 charge-coupled devices (CCDs) arranged into 21 stand-alone Raft Tower Modules (RTMs) and 4 Corn
Externí odkaz:
http://arxiv.org/abs/2101.01281
Autor:
Park, Ji Won, Wagner-Carena, Sebastian, Birrer, Simon, Marshall, Philip J., Lin, Joshua Yao-Yu, Roodman, Aaron
Publikováno v:
ApJ 910 39 (2021)
We investigate the use of approximate Bayesian neural networks (BNNs) in modeling hundreds of time-delay gravitational lenses for Hubble constant ($H_0$) determination. Our BNN was trained on synthetic HST-quality images of strongly lensed active gal
Externí odkaz:
http://arxiv.org/abs/2012.00042
Autor:
Chen, Angela, Huterer, Dragan, Lee, Sujeong, Ferté, Agnès, Weaverdyck, Noah, Alves, Otavio Alonso, Leonard, C. Danielle, MacCrann, Niall, Raveri, Marco, Porredon, Anna, Di Valentino, Eleonora, Muir, Jessica, Lemos, Pablo, Liddle, Andrew, Blazek, Jonathan, Campos, Andresa, Cawthon, Ross, Choi, Ami, Dodelson, Scott, Elvin-Poole, Jack, Gruen, Daniel, Ross, Ashley, Secco, Lucas F., Sevilla, Ignacio, Sheldon, Erin, Troxel, Michael A., Zuntz, Joe, Abbott, Tim, Aguena, Michel, Allam, Sahar, Annis, James, Avila, Santiago, Bertin, Emmanuel, Bhargava, Sunayana, Bridle, Sarah, Brooks, David, Rosell, Aurelio Carnero, Kind, Matias Carrasco, Carretero, Jorge, Costanzi, Matteo, Crocce, Martin, da Costa, Luiz, Pereira, Maria Elidaiana da Silva, Davis, Tamara, Doel, Peter, Eifler, Tim, Ferrero, Ismael, Fosalba, Pablo, Frieman, Josh, Garcia-Bellido, Juan, Gaztanaga, Enrique, Gerdes, David, Gruendl, Robert, Gschwend, Julia, Gutierrez, Gaston, Hinton, Samuel, Hollowood, Devon L., Honscheid, Klaus, Hoyle, Ben, James, David, Jarvis, Mike, Kuehn, Kyler, Lahav, Ofer, Maia, Marcio, Marshall, Jennifer, Menanteau, Felipe, Miquel, Ramon, Morgan, Robert, Palmese, Antonella, Paz-Chinchon, Francisco, Malagón, Andrés Plazas, Roodman, Aaron, Sanchez, Eusebio, Scarpine, Vic, Schubnell, Michael, Serrano, Santiago, Smith, Mathew, Suchyta, Eric, Tarle, Gregory, Thomas, Daniel, To, Chun-Hao, Varga, Tamas Norbert, Weller, Jochen, Wilkinson, Reese
Publikováno v:
Phys. Rev. D 103, 123528 (2021)
We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution of comoving dark matter density with two extra parameters, and may be a
Externí odkaz:
http://arxiv.org/abs/2011.04606
Hierarchical Inference With Bayesian Neural Networks: An Application to Strong Gravitational Lensing
Autor:
Wagner-Carena, Sebastian, Park, Ji Won, Birrer, Simon, Marshall, Philip J., Roodman, Aaron, Wechsler, Risa H.
Publikováno v:
ApJ 909 187 (2021)
In the past few years, approximate Bayesian Neural Networks (BNNs) have demonstrated the ability to produce statistically consistent posteriors on a wide range of inference problems at unprecedented speed and scale. However, any disconnect between tr
Externí odkaz:
http://arxiv.org/abs/2010.13787