%0 Generic %1 collaboration2015cosmology %A Collaboration, The Dark Energy Survey %A Abbott, T. %A Abdalla, F. B. %A Allam, S. %A Amara, A. %A Annis, J. %A Armstrong, R. %A Bacon, D. %A Banerji, M. %A Bauer, A. H. %A Baxter, E. %A Becker, M. R. %A Benoit-Lévy, A. %A Bernstein, R. A. %A Bernstein, G. M. %A Bertin, E. %A Blazek, J. %A Bonnett, C. %A Bridle, S. L. %A Brooks, D. %A Bruderer, C. %A Buckley-Geer, E. %A Burke, D. L. %A Busha, M. T. %A Capozzi, D. %A Rosell, A. Carnero %A Kind, M. Carrasco %A Carretero, J. %A Castander, F. J. %A Chang, C. %A Clampitt, J. %A Crocce, M. %A Cunha, C. E. %A D'Andrea, C. B. %A da Costa, L. N. %A Das, R. %A DePoy, D. L. %A Desai, S. %A Diehl, H. T. %A Dietrich, J. P. %A Dodelson, S. %A Doel, P. %A Drlica-Wagner, A. %A Efstathiou, G. %A Eifler, T. F. %A Erickson, B. %A Estrada, J. %A Evrard, A. E. %A Neto, A. Fausti %A Fernandez, E. %A Finley, D. A. %A Flaugher, B. %A Fosalba, P. %A Friedrich, O. %A Frieman, J. %A Gangkofner, C. %A Garcia-Bellido, J. %A Gaztanaga, E. %A Gerdes, D. W. %A Gruen, D. %A Gruendl, R. A. %A Gutierrez, G. %A Hartley, W. %A Hirsch, M. %A Honscheid, K. %A Huff, E. M. %A Jain, B. %A James, D. J. %A Jarvis, M. %A Kacprzak, T. %A Kent, S. %A Kirk, D. %A Krause, E. %A Kravtsov, A. %A Kuehn, K. %A Kuropatkin, N. %A Kwan, J. %A Lahav, O. %A Leistedt, B. %A Li, T. S. %A Lima, M. %A Lin, H. %A MacCrann, N. %A March, M. %A Marshall, J. L. %A Martini, P. %A McMahon, R. G. %A Melchior, P. %A Miller, C. J. %A Miquel, R. %A Mohr, J. J. %A Neilsen, E. %A Nichol, R. C. %A Nicola, A. %A Nord, B. %A Ogando, R. %A Palmese, A. %A Peiris, H. V. %A Plazas, A. A. %A Refregier, A. %A Roe, N. %A Romer, A. K. %A Roodman, A. %A Rowe, B. %A Rykoff, E. S. %A Sabiu, C. %A Sadeh, I. %A Sako, M. %A Samuroff, S. %A Sánchez, C. %A Sanchez, E. %A Seo, H. %A Sevilla-Noarbe, I. %A Sheldon, E. %A Smith, R. C. %A Soares-Santos, M. %A Sobreira, F. %A Suchyta, E. %A Swanson, M. E. C. %A Tarle, G. %A Thaler, J. %A Thomas, D. %A Troxel, M. A. %A Vikram, V. %A Walker, A. R. %A Wechsler, R. H. %A Weller, J. %A Zhang, Y. %A Zuntz, J. %D 2015 %K cosmic cosmology shear %T Cosmology from Cosmic Shear with DES Science Verification Data %U http://arxiv.org/abs/1507.05552 %X We present the first constraints on cosmology from the Dark Energy Survey (DES), using weak lensing measurements from the preliminary Science Verification (SV) data. We use 139 square degrees of SV data, which is less than 3\% of the full DES survey area. Using cosmic shear 2-point measurements over three redshift bins we find $\sigma_8 (Ømega_m/0.3)^0.5 = 0.81 0.06$ (68\% confidence), after marginalising over 7 systematics parameters and 3 other cosmological parameters. We examine the robustness of our results to the choice of data vector and systematics assumed, and find them to be stable. About $20$\% of our error bar comes from marginalising over shear and photometric redshift calibration uncertainties. The current state-of-the-art cosmic shear measurements from CFHTLenS are mildly discrepant with the cosmological constraints from Planck CMB data; our results are consistent with both datasets. Our uncertainties are $\sim$30\% larger than those from CFHTLenS when we carry out a comparable analysis of the two datasets, which we attribute largely to the lower number density of our shear catalogue. We investigate constraints on dark energy and find that, with this small fraction of the full survey, the DES SV constraints make negligible impact on the Planck constraints. The moderate disagreement between the CFHTLenS and Planck values of $\sigma_8 (Ømega_m/0.3)^0.5$ is present regardless of the value of $w$.

@misc{collaboration2015cosmology, abstract = {We present the first constraints on cosmology from the Dark Energy Survey (DES), using weak lensing measurements from the preliminary Science Verification (SV) data. We use 139 square degrees of SV data, which is less than 3\% of the full DES survey area. Using cosmic shear 2-point measurements over three redshift bins we find $\sigma_8 (\Omega_{\rm m}/0.3)^{0.5} = 0.81 \pm 0.06$ (68\% confidence), after marginalising over 7 systematics parameters and 3 other cosmological parameters. We examine the robustness of our results to the choice of data vector and systematics assumed, and find them to be stable. About $20$\% of our error bar comes from marginalising over shear and photometric redshift calibration uncertainties. The current state-of-the-art cosmic shear measurements from CFHTLenS are mildly discrepant with the cosmological constraints from Planck CMB data; our results are consistent with both datasets. Our uncertainties are $\sim$30\% larger than those from CFHTLenS when we carry out a comparable analysis of the two datasets, which we attribute largely to the lower number density of our shear catalogue. We investigate constraints on dark energy and find that, with this small fraction of the full survey, the DES SV constraints make negligible impact on the Planck constraints. The moderate disagreement between the CFHTLenS and Planck values of $\sigma_8 (\Omega_{\rm m}/0.3)^{0.5}$ is present regardless of the value of $w$.}, added-at = {2015-07-21T09:52:39.000+0200}, author = {Collaboration, The Dark Energy Survey and Abbott, T. and Abdalla, F. B. and Allam, S. and Amara, A. and Annis, J. and Armstrong, R. and Bacon, D. and Banerji, M. and Bauer, A. H. and Baxter, E. and Becker, M. R. and Benoit-Lévy, A. and Bernstein, R. A. and Bernstein, G. M. and Bertin, E. and Blazek, J. and Bonnett, C. and Bridle, S. L. and Brooks, D. and Bruderer, C. and Buckley-Geer, E. and Burke, D. L. and Busha, M. T. and Capozzi, D. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and Castander, F. J. and Chang, C. and Clampitt, J. and Crocce, M. and Cunha, C. E. and D'Andrea, C. B. and da Costa, L. N. and Das, R. and DePoy, D. L. and Desai, S. and Diehl, H. T. and Dietrich, J. P. and Dodelson, S. and Doel, P. and Drlica-Wagner, A. and Efstathiou, G. and Eifler, T. F. and Erickson, B. and Estrada, J. and Evrard, A. E. and Neto, A. Fausti and Fernandez, E. and Finley, D. A. and Flaugher, B. and Fosalba, P. and Friedrich, O. and Frieman, J. and Gangkofner, C. and Garcia-Bellido, J. and Gaztanaga, E. and Gerdes, D. W. and Gruen, D. and Gruendl, R. A. and Gutierrez, G. and Hartley, W. and Hirsch, M. and Honscheid, K. and Huff, E. M. and Jain, B. and James, D. J. and Jarvis, M. and Kacprzak, T. and Kent, S. and Kirk, D. and Krause, E. and Kravtsov, A. and Kuehn, K. and Kuropatkin, N. and Kwan, J. and Lahav, O. and Leistedt, B. and Li, T. S. and Lima, M. and Lin, H. and MacCrann, N. and March, M. and Marshall, J. L. and Martini, P. and McMahon, R. G. and Melchior, P. and Miller, C. J. and Miquel, R. and Mohr, J. J. and Neilsen, E. and Nichol, R. C. and Nicola, A. and Nord, B. and Ogando, R. and Palmese, A. and Peiris, H. V. and Plazas, A. A. and Refregier, A. and Roe, N. and Romer, A. K. and Roodman, A. and Rowe, B. and Rykoff, E. S. and Sabiu, C. and Sadeh, I. and Sako, M. and Samuroff, S. and Sánchez, C. and Sanchez, E. and Seo, H. and Sevilla-Noarbe, I. and Sheldon, E. and Smith, R. C. and Soares-Santos, M. and Sobreira, F. and Suchyta, E. and Swanson, M. E. C. and Tarle, G. and Thaler, J. and Thomas, D. and Troxel, M. A. and Vikram, V. and Walker, A. R. and Wechsler, R. H. and Weller, J. and Zhang, Y. and Zuntz, J.}, biburl = {https://www.bibsonomy.org/bibtex/29aeae4d2ecb3f20c643b7d21d6074f39/miki}, description = {[1507.05552] Cosmology from Cosmic Shear with DES Science Verification Data}, interhash = {b96d550fa57d9336b0d3512dd2ef514e}, intrahash = {9aeae4d2ecb3f20c643b7d21d6074f39}, keywords = {cosmic cosmology shear}, note = {cite arxiv:1507.05552Comment: 20 pages, 12 figures. Additional information at http://deswl.github.io/}, timestamp = {2015-07-21T09:52:39.000+0200}, title = {Cosmology from Cosmic Shear with DES Science Verification Data}, url = {http://arxiv.org/abs/1507.05552}, year = 2015 }