Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Vanderveld, R. Ali"'
Autor:
Kumar, Avishek, Rizvi, Syed Ali Asad, Brooks, Benjamin, Vanderveld, R. Ali, Wilson, Kevin H., Kenney, Chad, Edelstein, Sam, Finch, Adria, Maxwell, Andrew, Zuckerbraun, Joe, Ghani, Rayid
Water infrastructure in the United States is beginning to show its age, particularly through water main breaks. Main breaks cause major disruptions in everyday life for residents and businesses. Water main failures in Syracuse, N.Y. (as in most citie
Externí odkaz:
http://arxiv.org/abs/1805.03597
Publikováno v:
Phys. Rev. Lett. 112, 051302 (2014)
Current measurements of the low and high redshift Universe are in tension if we restrict ourselves to the standard six parameter model of flat $\Lambda$CDM. This tension has two parts. First, the Planck satellite data suggest a higher normalization o
Externí odkaz:
http://arxiv.org/abs/1307.7715
Autor:
Vanderveld, R. Ali, Hu, Wayne
Given recent indications of additional neutrino species and cosmologically significant neutrino masses, we analyze their signatures in the weak lensing shear power spectrum. We find that a shear deficit in the 20-40% range or excess in the 20-60% ran
Externí odkaz:
http://arxiv.org/abs/1212.3608
Autor:
Rhodes, Jason, Dobke, Benjamin, Booth, Jeffrey, Massey, Richard, Liewer, Kurt, Smith, Roger, Amara, Adam, Aldrich, Jack, Berge, Joel, Bezawada, Naidu, Brugarolas, Paul, Clark, Paul, Dubbeldam, Cornelis M., Ellis, Richard, Frenk, Carlos, Gallie, Angus, Heavens, Alan, Henry, David, Jullo, Eric, Kitching, Thomas, Lanzi, James, Lilly, Simon, Lunney, David, Miyazaki, Satoshi, Morris, David, Paine, Christopher, Peacock, John, Pellegrino, Sergio, Pittock, Roger, Pool, Peter, Refregier, Alexandre, Seiffert, Michael, Sharples, Ray, Smith, Alexandra, Stuchlik, David, Taylor, Andy, Teplitz, Harry, Vanderveld, R. Ali, Wu, James
We present a method for attaining sub-arcsecond pointing stability during sub- orbital balloon flights, as designed for in the High Altitude Lensing Observatory (HALO) concept. The pointing method presented here has the potential to perform near-spac
Externí odkaz:
http://arxiv.org/abs/1205.2957
Publikováno v:
Phys.Rev.D85:103518,2012
Any theory invoked to explain cosmic acceleration predicts consistency relations between the expansion history, structure growth, and all related observables. Currently there exist high-quality measurements of the expansion history from Type Ia super
Externí odkaz:
http://arxiv.org/abs/1203.3195
Publikováno v:
Phys.Rev.D84:123510,2011
We explore the sensitivity of weak gravitational lensing to second-order corrections to the spacetime metric within a cosmological adaptation of the parameterized post-Newtonian framework. Whereas one might expect nonlinearities of the gravitational
Externí odkaz:
http://arxiv.org/abs/1109.3189
Publikováno v:
Phys.Rev.D85:023510,2012
We study the fluctuations in luminosity distances due to gravitational lensing by large scale (> 35 Mpc) structures, specifically voids and sheets. We use a simplified "Swiss cheese" model consisting of a \Lambda -CDM Friedman-Robertson-Walker backgr
Externí odkaz:
http://arxiv.org/abs/1109.1873
Autor:
Vanderveld, R. Ali, Bernstein, Gary M., Stoughton, Chris, Rhodes, Jason, Massey, Richard, Johnston, David, Dobke, Benjamin M.
Publikováno v:
PASP 123 (2011) 996-1003
Future orbiting observatories will survey large areas of sky in order to constrain the physics of dark matter and dark energy using weak gravitational lensing and other methods. Lossy compression of the resultant data will improve the cost and feasib
Externí odkaz:
http://arxiv.org/abs/1106.5805
Autor:
Dobke, Benjamin M., Johnston, David E., Massey, Richard, High, F. William, Ferry, Matthew, Rhodes, Jason, Vanderveld, R. Ali
We present the 'simage' software suite for the simulation of artificial extragalactic images, based empirically around real observations of the Hubble Ultra Deep Field (UDF). The simulations reproduce galaxies with realistic and complex morphologies
Externí odkaz:
http://arxiv.org/abs/1008.4112
Autor:
Bernstein, Gary M., Bebek, Chris, Rhodes, Jason, Stoughton, Chris, Vanderveld, R. Ali, Yeh, Penshu
Publikováno v:
Publ.Astron.Soc.Pac.122:336-346,2010
We investigate data compression schemes for proposed all-sky diffraction-limited visible/NIR sky surveys aimed at the dark energy problem. We show that lossy square-root compression to 1 bit of noise per pixel, followed by standard lossless compressi
Externí odkaz:
http://arxiv.org/abs/0910.4571