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The Figure of Merit Science Working Group (FoMSWG) recently forecast the constraints on dark energy that will be achieved prior to the Joint Dark Energy Mission (JDEM) by ground-based experiments that exploit baryon acoustic oscillations,…

Cosmology and Nongalactic Astrophysics · Physics 2009-10-29 Carlos Cunha , Dragan Huterer , Joshua A. Frieman

The Sloan Digital Sky Survey (SDSS) will provide a complete imaging and spectroscopic survey of the high-latitude northern sky. The 2D survey will image the sky in five colors and will contain nearly 5 x 107 galaxies to g ~ 23m. The…

Astrophysics · Physics 2009-10-28 Neta A. Bahcall

Number counts of galaxy clusters offer a very promising probe of the Dark Energy (DE) equation-of-state parameter, $w$. The basic goal is to measure abundances of these objects as a function of redshift, compare this to a theoretical…

Astrophysics · Physics 2009-09-29 M. Davis , B. F. Gerke , A. L. Coil , M. C. Cooper , R. Yan , J. A. Newman , S. M. Faber , D. Koo , P. Guhathakurta

We study future constraints on dark energy parameters determined from several combinations of CMB experiments, supernova data, and weak lensing surveys with and without tomography. In this analysis, we look in particular for combinations…

Astrophysics · Physics 2011-02-01 Mustapha Ishak

We report the combined results of eight searches for strong gravitational lens systems in the full 5,000 sq. deg. of Dark Energy Survey (DES) observations. The observations accumulated by the end of the third observing season fully covered…

Strong lensing has developed into an important astrophysical tool for probing both cosmology and galaxies (their structures, formations, and evolutions). Now several hundreds of strong lens systems produced by massive galaxies have been…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Shuo Cao , Zong-Hong Zhu

The Dark Energy Spectroscopic Instrument (DESI) will precisely constrain cosmic expansion and the growth of structure by collecting $\sim$40 million extra-galactic redshifts across $\sim$80\% of cosmic history and one third of the sky. The…

We present constraints on extensions of the minimal cosmological models dominated by dark matter and dark energy, $\Lambda$CDM and $w$CDM, by using a combined analysis of galaxy clustering and weak gravitational lensing from the first-year…

Cosmology and Nongalactic Astrophysics · Physics 2019-11-11 DES Collaboration , T. M. C. Abbott , F. B. Abdalla , S. Avila , M. Banerji , E. Baxter , K. Bechtol , M. R. Becker , E. Bertin , J. Blazek , S. L. Bridle , D. Brooks , D. Brout , D. L. Burke , A. Campos , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , C. Chang , A. Chen , M. Crocce , C. E. Cunha , L. N. da Costa , C. Davis , J. De Vicente , J. DeRose , S. Desai , E. Di Valentino , H. T. Diehl , J. P. Dietrich , S. Dodelson , P. Doel , A. Drlica-Wagner , T. F. Eifler , J. Elvin-Poole , A. E. Evrard , E. Fernandez , A. Ferté , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , B. Hoyle , D. Huterer , B. Jain , T. Jeltema , M. W. G. Johnson , M. D. Johnson , A. G. Kim , E. Krause , K. Kuehn , N. Kuropatkin , O. Lahav , S. Lee , P. Lemos , C. D. Leonard , T. S. Li , A. R. Liddle , M. Lima , H. Lin , M. A. G. Maia , J. L. Marshall , P. Martini , F. Menanteau , C. J. Miller , R. Miquel , V. Miranda , J. J. Mohr , J. Muir , R. C. Nichol , B. Nord , R. L. C. Ogando , A. A. Plazas , M. Raveri , R. P. Rollins , A. K. Romer , A. Roodman , R. Rosenfeld , S. Samuroff , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , D. Scolnic , L. F. Secco , S. Serrano , I. Sevilla-Noarbe , M. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , M. A. Troxel , V. Vikram , A. R. Walker , N. Weaverdyck , R. H. Wechsler , J. Weller , B. Yanny , Y. Zhang , J. Zuntz

Even though the Dark Energy Spectroscopic Instrument (DESI) mission does not exclude a dynamical dark energy evolution, the concordance paradigm, i.e., the $\Lambda$CDM model, remains statistically favored, as it depends on the fewest…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-08 Anna Chiara Alfano , Orlando Luongo , Marco Muccino

We describe the first public data release of the Dark Energy Survey, DES DR1, consisting of reduced single epoch images, coadded images, coadded source catalogs, and associated products and services assembled over the first three years of…

Instrumentation and Methods for Astrophysics · Physics 2019-04-24 T. M. C. Abbott , F. B. Abdalla , S. Allam , A. Amara , J. Annis , J. Asorey , S. Avila , O. Ballester , M. Banerji , W. Barkhouse , L. Baruah , M. Baumer , K. Bechtol , M . R. Becker , A. Benoit-Lévy , G. M. Bernstein , E. Bertin , J. Blazek , S. Bocquet , D. Brooks , D. Brout , E. Buckley-Geer , D. L. Burke , V. Busti , R. Campisano , L. Cardiel-Sas , A. C arnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , C. Chang , X. Chen , C. Conselice , G. Costa , M. Crocce , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , R. Das , G. Daues , T. M. Davis , C. Davis , J. De Vicente , D. L. DePoy , J. DeRose , S. Desai , H. T. Diehl , J. P. Dietrich , S. Dodelson , P. Doel , A. Drlica-Wagner , T. F. Eifler , A. E. Elliott , A. E. Evrard , A. Farahi , A. Fausti Neto , E. Fernandez , D. A. Finley , M. Fitzpatrick , B. Flaugher , R. J. Foley , P. Fosalba , D. N. Friedel , J. Frieman , J. García-Bellido , E. Gaz tanaga , D. W. Gerdes , T. Giannantonio , M. S. S. Gill , K. Glazebrook , D. A. Goldstein , M. Gower , D. Gruen , R. A. Gruendl , J. Gschwend , R. R. Gupta , G. Gutierrez , S. Hamilton , W. G. Hartley , S. R. Hinton , J. M. Hislop , D. Hollowood , K. Honscheid , B. Hoyle , D. Huterer , B. Jain , D. J. James , T. Jeltema , M. W. G. Johnson , M. D. Johnson , S. Juneau , T. Kacprzak , S. Kent , G. Khullar , M. Klein , A. Kovacs , A. M. G. Koziol , E. Krause , A. Kremin , R. Kron , K. Kuehn , S. Kuhlmann , N. Kuropatkin , O. Lahav , J. Lasker , T. S. Li , R. T. Li , A. R. Liddle , M. Lima , H. Lin , P. López-Reyes , N. MacCrann , M. A. G. Maia , J. D. Maloney , M. Manera , M. March , J. Marriner , J. L. Marshall , P. Martini , T. McClintock , T. McKay , R . G. McMahon , P. Melchior , F. Menanteau , C. J. Miller , R. Miquel , J. J. Mohr , E. Morganson , J. Mould , E. Neilsen , R. C. Nichol , D. Nidever , R. Nikutta , F. Nogueira , B. Nord , P. Nugent , L. Nunes , R. L. C. Ogando , L. Old , K. Olsen , A. B. Pace , A. Palmese , F. Paz-Chinchón , H. V. Peiris , W. J. Percival , D. Petravick , A. A. Plazas , J. Poh , C. Pond , A. Por redon , A. Pujol , A. Refregier , K. Reil , P. M. Ricker , R. P. Rollins , A. K. Romer , A. Roodman , P. Rooney , A. J. Ross , E. S. Rykoff , M. Sako , E. Sanchez , M. L. Sanchez , B. Santiago , A. Saro , V. Scarpine , D. Scolnic , A. Scott , S. Serrano , I. Sevilla-Noarbe , E. Sheldon , N. Shipp , M. L. Silveira , R. C. Smith , J. A. Smith , M. Smith , M. Soares-Santos , F. Sobre ira , J. Song , A. Stebbins , E. Suchyta , M. Sullivan , M. E. C. Swanson , G. Tarle , J. Thaler , D. Thomas , R. C. Thomas , M. A. Troxel , D. L. Tucker , V. Vikram , A. K. Vivas , A. R. Wal ker , R. H. Wechsler , J. Weller , W. Wester , R. C. Wolf , H. Wu , B. Yanny , A. Zenteno , Y. Zhang , J. Zuntz

We present weak lensing shear catalogues for 139 square degrees of data taken during the Science Verification (SV) time for the new Dark Energy Camera (DECam) being used for the Dark Energy Survey (DES). We describe our object selection,…

Combined survey analyses of galaxy clustering and weak gravitational lensing (3x2-pt studies) will allow new and accurate tests of the standard cosmological model. However, careful validation is necessary to ensure that these cosmological…

We present the full Hubble diagram of photometrically-classified Type Ia supernovae (SNe Ia) from the Dark Energy Survey supernova program (DES-SN). DES-SN discovered more than 20,000 SN candidates and obtained spectroscopic redshifts of…

We forecast the expected cosmological constraints from a combination of probes of both the universal expansion rate and matter perturbation growth, in the form of weak lensing tomography, galaxy tomography, supernovae, and the cosmic…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-10 Shahab Joudaki , Manoj Kaplinghat

Recent analyses joining data from the Cosmic Microwave Background (CMB), Baryon Acoustic Oscillations (BAO), and Type Ia Supernovae (SNIa) have provided strong evidence in favor of dynamical dark energy (DDE) over a simple cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-13 Miguel A. Sabogal , Rafael C. Nunes

Data-driven approaches using deep learning are emerging as powerful techniques to extract non-Gaussian information from cosmological large-scale structure. This work presents the first simulation-based inference (SBI) pipeline that combines…

The Chinese Space Station Survey Telescope (CSST) is a flagship space mission, designed to carry out a large-area sky survey to explore the nature of dark matter and dark energy in the Universe. The onboard multi-band imaging and slitless…

Instrumentation and Methods for Astrophysics · Physics 2025-11-17 Cheng-Liang Wei , Yu Luo , Hao Tian , Ming Li , Yi-Sheng Qiu , Guo-Liang Li , Yue-Dong Fang , Xin Zhang , De-Zi Liu , Nan Li , Ran Li , Huan-Yuan Shan , Lin Nie , Zizhao He , Lei Wang , Xi Kang , Dongwei Fan , Yang Chen , Xiaoting Fu , Chao Liu

The analysis of current and future cosmological surveys of type Ia supernovae (SNe Ia) at high-redshift depends on the accurate photometric classification of the SN events detected. Generating realistic simulations of photometric SN surveys…

Strong lensing by galaxy clusters can be used to significantly expand the survey reach, thus allowing observation of magnified high-redshift supernovae that otherwise would remain undetected. Strong lensing can also provide multiple images…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-01 T. Petrushevska