Zobrazeno 1 - 10
of 122
pro vyhledávání: '"A. Vallinotto"'
Autor:
Rhodes, J., Allen, S., Benson, B. A., Chang, T., de Putter, R., Dodelson, S., Dore, O., Honscheid, K., Linder, E., Menard, B., Newman, J., Nord, B., Rozo, E., Vallinotto, A., Weinberg, D.
In this report, we present a wide variety of ways in which information from multiple probes of dark energy may be combined to obtain additional information not accessible when they are considered separately. Fundamentally, because all major probes ar
Externí odkaz:
http://arxiv.org/abs/1309.5388
Autor:
Vallinotto, Alberto, Linder, Eric V.
Redshift space distortions of the matter density power spectrum carry information on the growth rate of cosmic structure but require accurate modeling of nonlinear and velocity effects on the density field. We test and advance the reconstruction func
Externí odkaz:
http://arxiv.org/abs/1307.2906
Autor:
Vallinotto, Alberto
Publikováno v:
Astrophys.J.778:108,2013
The Dark Energy Survey (DES) has recently completed the Science Verification phase (SV), collecting data over 150 sq. deg. of sky. In this work we analyze to what extent it is beneficial to supplement the analysis of DES data with CMB lensing data. W
Externí odkaz:
http://arxiv.org/abs/1304.3474
Autor:
Bleem, L. E., van Engelen, A., Holder, G. P., Aird, K. A., Armstrong, R., Ashby, M. L. N., Becker, M. R., Benson, B. A., Biesiadzinski, T., Brodwin, M., Busha, M. T., Carlstrom, J. E., Chang, C. L., Cho, H. M., Crawford, T. M., Crites, A. T., de Haan, T., Desai, S., Dobbs, M. A., Doré, O., Dudley, J., Geach, J. E., George, E. M., Gladders, M. D., Gonzalez, A. H., Halverson, N. W., Harrington, N., High, F. W., Holden, B. P., Holzapfel, W. L., Hoover, S., Hrubes, J. D., Joy, M., Keisler, R., Knox, L., Lee, A. T., Leitch, E. M., Lueker, M., Luong-Van, D., Marrone, D. P., Martinez-Manso, J., McMahon, J. J., Mehl, J., Meyer, S. S., Mohr, J. J., Montroy, T. E., Natoli, T., Padin, S., Plagge, T., Pryke, C., Reichardt, C. L., Rest, A., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Shaw, L., Shirokoff, E., Spieler, H. G., Stalder, B., Stanford, S. A., Staniszewski, Z., Stark, A. A., Stern, D., Story, K., Vallinotto, A., Vanderlinde, K., Vieira, J. D., Wechsler, R. H., Williamson, R., Zahn, O.
Publikováno v:
Astrophysical Journal Letters 753 (2012) L9
We compare cosmic microwave background lensing convergence maps derived from South Pole Telescope (SPT) data with galaxy survey data from the Blanco Cosmology Survey, the Wide-field Infrared Survey Explorer, and a new large Spitzer/IRAC field designe
Externí odkaz:
http://arxiv.org/abs/1203.4808
Autor:
Vallinotto, Alberto
Publikováno v:
Astrophys.J.759:32,2012
Weak gravitational lensing is one of the key probes of cosmology. Cosmic shear surveys aimed at measuring the distribution of matter in the universe are currently being carried out (Pan-STARRS) or planned for the coming decade (DES, LSST, EUCLID, WFI
Externí odkaz:
http://arxiv.org/abs/1110.5339
Publikováno v:
Phys.Rev. D84 (2011) 103004
Weak lensing surveys exploit measurements of galaxy ellipticities. These measurements are subject to errors which degrade the cosmological information that can be extracted from the surveys. Here we propose a way of using the galaxy data themselves t
Externí odkaz:
http://arxiv.org/abs/1009.5590
Publikováno v:
JCAP 1203 (2012) 020
Indirect Dark Matter searches are based on the observation of secondary particles produced by the annihilation or decay of Dark Matter. Among them, gamma-rays are perhaps the most promising messengers, as they do not suffer deflection or absorption o
Externí odkaz:
http://arxiv.org/abs/1009.5107
Publikováno v:
JCAP 1011:003,2010
We perform a thorough computation of the one-loop corrections from both scalar and tensor degrees of freedom to the power spectrum of curvature fluctuations for non-canonical Lagrangians in single-field inflation. We consider models characterized by
Externí odkaz:
http://arxiv.org/abs/1006.0196
Publikováno v:
Phys.Rev.D81:103531,2010
Dark matter in the form of weakly interacting massive particles is predicted to become gravitationally captured and accumulate in stars. While the subsequent annihilations of such particles lead to the injection of energy into stellar cores, elastica
Externí odkaz:
http://arxiv.org/abs/1002.0005
Publikováno v:
Astrophys.J.718:972-980,2010
We present new analytical estimates of the large scale bias of neutral hydrogen (HI). We use a simple, non-parametric model which monotonically relates the total mass of a halo M_tot with its HI mass M_HI at zero redshift; for earlier times we assume
Externí odkaz:
http://arxiv.org/abs/0911.0041