Results 51 to 60 of about 1,833,333 (166)

THE DARK ENERGY CAMERA [PDF]

The Astronomical Journal, 2015
submitted to AJ Corresponding Authors H. T. Diehl (diehl@fnal.gov)
Flaugher, B., Diehl, H. T., Honscheid, K., Abbott, T. M. C., Alvarez, O., Angstadt, R., Annis, J. T., Antonik, M., Ballester, O., Beaufore, L., Bernstein, G. M., Bernstein, R. A., Bigelow, B., Bonati, M., Boprie, D., Brooks, D., Buckley-Geer, E. J., Campa, J., Cardiel-Sas, L., Castander, F. J., Castilla, J., Cease, H., Cela-Ruiz, J. M., Chappa, S., Chi, E., Cooper, C., Costa, L. N. da, Dede, E., Derylo, G., DePoy, D. L., Vicente, J. de, Doel, P., Drlica-Wagner, A., Eiting, J., Elliott, A. E., Emes, J., Estrada, J., Neto, A. Fausti, Finley, D. A., Flores, R., Frieman, J., Gerdes, D., Gladders, M. D., Gregory, B., Gutierrez, G. R., Hao, J., Holland, S. E., Holm, S., Huffman, D., Jackson, C., James, D. J., Jonas, M., Karcher, A., Karliner, I., Kent, S., Kessler, R., Kozlovsky, M., Kron, R. G., Kubik, D., Kuehn, K., Kuhlmann, S., Kuk, K., Lahav, O., Lathrop, A., Lee, J., Levi, M. E., Lewis, P., Li, T. S., Mandrichenko, I., Marshall, J. L., Martinez, Gustavo, Merritt, K. W., Miquel, R., Munoz, F., Neilsen, E. H., Nichol, R. C., Nord, B., Ogando, R., Olsen, J., Palio, N., Patton, K., Peoples, J., Plazas, A. A., Rauch, J., Reil, K., Rheault, J. -P., Roe, N. A., Rogers, H., Roodman, A., Sanchez, E., Scarpine, V., Schindler, R. H., Schmidt, R., Schmitt, R., Schubnell, M., Schultz, K., Schurter, P., Scott, L., Serrano, S., Shaw, T. M., Smith, R. C., Soares-Santos, M., Stefanik, A., Stuermer, W., Suchyta, E., Sypniewski, A., Tarle, G., Thaler, J., Tighe, R., Tran, C., Tucker, D., Walker, A. R., Wang, G., Watson, M., Weaverdyck, C., Wester, W., Woods, R., Yanny, B., The DES Collaboration   +118 more
openaire   +4 more sources

Neural Posterior Estimation for Cataloging Astronomical Images from the Legacy Survey of Space and Time

The Astronomical Journal
The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will commence full-scale operations in 2026, yielding an unprecedented volume of astronomical images.
Yicun Duan, Xinyue Li, Camille Avestruz, Jeffrey Regier, LSST Dark Energy Science Collaboration   +4 more
doaj   +1 more source

Metastable dark energy

Physics Letters B, 2017
We build a model of metastable dark energy, in which the observed vacuum energy is the value of the scalar potential at the false vacuum. The scalar potential is given by a sum of even self-interactions up to order six.
Ricardo G. Landim, Elcio Abdalla
doaj   +1 more source

Higgs dark energy [PDF]

Classical and Quantum Gravity, 2015
We study the classical dynamics of a non-abelian Higgs theory coupled to gravity in an isotropic and homogeneous Universe. For non-minimal coupling, this theory leads to a model of cosmic inflation that is very attractive due to its simplicity and consistency with the latest experimental data.
openaire   +2 more sources

Neural Posterior Estimation for Cataloging Astronomical Images with Spatially Varying Backgrounds and Point Spread Functions

The Astronomical Journal
Neural posterior estimation (NPE), a type of amortized variational inference, is a computationally efficient means of constructing probabilistic catalogs of light sources from astronomical images.
Aakash Patel, Tianqing Zhang, Camille Avestruz, Jeffrey Regier, The LSST Dark Energy Science Collaboration   +4 more
doaj   +1 more source

Chameleon Dark Energy

, 2004
Chameleons are scalar fields whose mass depends on the environment, specifically on the ambient matter density. While nearly massless in the cosmos, where the matter density is tiny, their mass is of order of an inverse millimeter on Earth, where the ...
Brax, Ph., Davis, A. C., Khoury, J., van de Bruck, C., Weltman, A.   +4 more
core   +2 more sources

Dark matter as dark energy

Physics Letters B, 2003
Velocity-dependent interactions in a fundamental-string dominated universe lead quite naturally, with reasonable assumptions on initial conditions, to an accelerating expanding universe without assuming the existence of a cosmological constant. This result also holds generically for a universe dominated by moving extremal black holes, owing to a ...
openaire   +2 more sources

Interacting Agegraphic Dark Energy

, 2009
A new dark energy model, named "agegraphic dark energy", has been proposed recently, based on the so-called K\'{a}rolyh\'{a}zy uncertainty relation, which arises from quantum mechanics together with general relativity.
A.A. Coley, A.G. Cohen, A.G. Riess, A.G. Riess, A.G. Riess, B. Gumjudpai, B. Wang, C.L. Bennett, D.N. Spergel, D.N. Spergel, E.J. Copeland, F. Károlyházy, F. Károlyházy, F. Károlyházy, G. Miknaitis, H. Kim, H. Wei, H. Wei, H. Wei, H. Wei, H. Wei, H. Wei, H. Wei, H. Wei, H. Wei, H. Wei, Hao Wei, I.P. Neupane, J. Wainwright, J.F. Zhang, J.M. Cline, J.P. Wu, J.Q. Xia, J.Q. Xia, K.Y. Kim, L. Amendola, L. Amendola, L. Amendola, L. Amendola, L.P. Chimento, M. Arzano, M. Li, M. Maziashvili, M. Maziashvili, M. Tegmark, M. Tegmark, M. Tegmark, N. Sasakura, P. Astier, R.G. Cai, R.G. Cai, R.R. Caldwell, Rong-Gen Cai, S. Lloyd, S. Perlmutter, S.D.H. Hsu, S.M. Carroll, S.W. Allen, S.W. Allen, U. Seljak, W. Zimdahl, W. Zimdahl, W.A. Christiansen, W.M. Wood-Vasey, X. Zhang, Y.J. Ng, Y.J. Ng, Y.J. Ng, Y.S. Myung, Z.K. Guo, Z.K. Guo, Z.K. Guo, Z.K. Guo   +72 more
core   +1 more source

Pixelated Dark Energy

Fortschritte der Physik, 2019
AbstractWe study the phenomenology of a recent string construction with a quantum mechanically stable dark energy. A mild supersymmetry protects the vacuum energy but also allows TeV scale superpartner masses. The construction is holographic in the sense that the 4D spacetime is generated from “spacetime pixels” originating from five‐branes wrapped ...
Heckman J. J., Lawrie C., Lin L., Sakstein J., Zoccarato G.   +4 more
openaire   +3 more sources

Improvement of airfoil trailing edge bluntness noise model

Advances in Mechanical Engineering, 2016
In this article, airfoil trailing edge bluntness noise is investigated using both computational aero-acoustic and semi-empirical approach. For engineering purposes, one of the most commonly used prediction tools for trailing edge noise are based on semi ...
Wei Jun Zhu, Wen Zhong Shen, Jens Nørkær Sørensen, Giorgos Leloudas   +3 more
doaj   +1 more source