Institution
IFAE
Other•Barcelona, Spain•
About: IFAE is a other organization based out in Barcelona, Spain. It is known for research contribution in the topics: Large Hadron Collider & Galaxy. The organization has 664 authors who have published 1270 publications receiving 51097 citations. The organization is also known as: Instituto de Fisica de Altas Energias & IFAE.
Topics: Large Hadron Collider, Galaxy, Higgs boson, Redshift, MAGIC (telescope)
Papers published on a yearly basis
Papers
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TL;DR: In this article, a catalog of 4195 optically confirmed galaxy clusters detected with signal-to-noise ratio >4 in 13,211 deg2 of sky surveyed by the Atacama Cosmology Telescope (ACT) is presented.
Abstract: We present a catalog of 4195 optically confirmed Sunyaev–Zel’dovich (SZ) selected galaxy clusters detected with signal-to-noise ratio >4 in 13,211 deg2 of sky surveyed by the Atacama Cosmology Telescope (ACT). Cluster candidates were selected by applying a multifrequency matched filter to 98 and 150 GHz maps constructed from ACT observations obtained from 2008 to 2018 and confirmed using deep, wide-area optical surveys. The clusters span the redshift range 0.04 1 clusters, and a total of 868 systems are new discoveries. Assuming an SZ signal versus mass-scaling relation calibrated from X-ray observations, the sample has a 90% completeness mass limit of M500c > 3.8 × 1014 Me, evaluated at z = 0.5, for clusters detected at signal-to-noise ratio >5 in maps filtered at an angular scale of 2 4. The survey has a large overlap with deep optical weak-lensing surveys that are being used to calibrate the SZ signal mass-scaling relation, such as the Dark Energy Survey (4566 deg2), the Hyper Suprime-Cam Subaru Strategic Program (469 deg2), and the Kilo Degree Survey (825 deg2). We highlight some noteworthy objects in the sample, including potentially projected systems, clusters with strong lensing features, clusters with active central galaxies or star formation, and systems of multiple clusters that may be physically associated. The cluster catalog will be a useful resource for future cosmological analyses and studying the evolution of the intracluster medium and galaxies in massive clusters over the past 10 Gyr.
100 citations
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University of Pennsylvania1, University of Chicago2, University of Queensland3, Lawrence Berkeley National Laboratory4, Australian National University5, University of Portsmouth6, University of Southampton7, University of Copenhagen8, Korea Astronomy and Space Science Institute9, Harvard University10, African Institute for Mathematical Sciences11, Texas A&M University12, Pontifical Catholic University of Chile13, University of California, Berkeley14, University of California, Santa Cruz15, University of Pittsburgh16, Swinburne University of Technology17, University of Namibia18, Gordon and Betty Moore Foundation19, Macquarie University20, Argonne National Laboratory21, University of Sydney22, University of Cambridge23, University of Arizona24, University of Illinois at Urbana–Champaign25, Fermilab26, Academia Sinica27, National Institutes of Natural Sciences, Japan28, Carnegie Institution for Science29, Institut d'Astrophysique de Paris30, University College London31, Stanford University32, SLAC National Accelerator Laboratory33, IFAE34, Spanish National Research Council35, Indian Institute of Technology, Hyderabad36, California Institute of Technology37, Autonomous University of Madrid38, ETH Zurich39, Ohio State University40, Ludwig Maximilian University of Munich41, Max Planck Society42, University of São Paulo43, University of Michigan44, University of Sussex45, Universidade Federal do Rio Grande do Sul46, Brandeis University47, State University of Campinas48, Oak Ridge National Laboratory49
TL;DR: In this paper, the analysis underpinning the measurement of cosmological parameters from 207 spectroscopically classified SNe Ia from the first 3 years of the DES-SN, spanning a redshift range of 0.017 < z < 0.849.
Abstract: We present the analysis underpinning the measurement of cosmological parameters from 207 spectroscopically classified SNe Ia from the first 3 years of the Dark Energy Survey Supernova Program (DES-SN), spanning a redshift range of 0.017 < z < 0.849. We combine the DES-SN sample with an external sample of 122 low-redshift (z < 0.1) SNe. Ia, resulting in a "DES-SN3YR" sample of 329 SNe Ia. Our cosmological analyses are blinded: after combining our DES-SN3YR distances with constraints from the Cosmic Microwave Background, our uncertainties in the measurement of the dark energy equation-of-state parameter, w, are 0.042. (stat) and 0.059 (stat+syst) at 68% confidence. We provide a detailed systematic uncertainty budget, which has nearly equal contributions from photometric calibration, astrophysical bias corrections, and instrumental bias corrections. We also include several new sources of systematic uncertainty. While our sample is less than one-third the size of the Pantheon sample, our constraints on w are only larger by 1.4x, showing the impact of the DES-SN. Ia light-curve quality. We find that the traditional stretch and color standardization parameters of the DES-SNe. Ia are in agreement with earlier SN. Ia samples such as Pan-STARRS1 and the Supernova Legacy Survey. However, we find smaller intrinsic scatter about the Hubble diagram (0.077 mag). Interestingly, we find no evidence for a Hubble residual step (0.007 +/- 0.018 mag) as a function of host-galaxy mass for the DES subset, in 2.4 sigma tension with previous measurements. We also present novel validation methods of our sample using simulated SNe. Ia inserted in DECam images and using large catalog-level simulations to test for biases in our analysis pipelines.
100 citations
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TL;DR: In this article, the authors reported the detection of very high energy (VHE, E>100 GeV) gamma-ray emission from NGC 1275, the central radio galaxy of the Perseus cluster of galaxies.
Abstract: We report on the detection of very-high energy (VHE, E>100 GeV) gamma-ray emission from NGC 1275, the central radio galaxy of the Perseus cluster of galaxies. The source has been detected by the MAGIC telescopes with a statistical significance of 6.6 sigma above 100 GeV in 46 hr of stereo observations carried out between August 2010 and February 2011. The measured differential energy spectrum between 70 GeV and 500 GeV can be described by a power law with a steep spectral index of \Gamma=-4.1+/-0.7stat+/-0.3syst, and the average flux above 100 GeV is F_{gamma}=(1.3+/-0.2stat+/-0.3syst) x 10^-11 cm^-2 s^-1. These results, combined with the power-law spectrum measured in the first two years of observations by the Fermi-LAT above 100 MeV, with a spectral index of Gamma ~ -2.1, strongly suggest the presence of a break or cut-off around tens of GeV in the NGC 1275 spectrum. The light curve of the source above 100 GeV does not show hints of variability on a month time scale. Finally, we report on the nondetection in the present data of the radio galaxy IC 310, previously discovered by the Fermi-LAT and MAGIC. The derived flux upper limit F^{U.L.}_{gamma} (>300 GeV)=1.2 x 10^-12 cm^-2 s^-1 is a factor ~ 3 lower than the mean flux measured by MAGIC between October 2009 and February 2010, thus confirming the year time-scale variability of the source at VHE.
100 citations
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TL;DR: In this article, a search for the decay of the Standard Model Higgs boson into a b (b) over bar pair when produced in association with a W or Z boson is performed with the ATLAS detector.
Abstract: A search for the decay of the Standard Model Higgs boson into a b (b) over bar pair when produced in association with a W or Z boson is performed with the ATLAS detector. The analysed data, corresp ...
99 citations
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IFAE1, University of Pennsylvania2, Institute of Cosmology and Gravitation, University of Portsmouth3, SLAC National Accelerator Laboratory4, Stanford University5, Ludwig Maximilian University of Munich6, University of Michigan7, ETH Zurich8, University College London9, Catalan Institution for Research and Advanced Studies10, University of Arizona11, Brookhaven National Laboratory12, University of Manchester13, Rhodes University14, Fermilab15, Institut d'Astrophysique de Paris16, Carnegie Learning17, University of Illinois at Urbana–Champaign18, National Center for Supercomputing Applications19, Institut de Ciències de l'Espai20, University of Southampton21, University of Chicago22, Ohio State University23, Australian Astronomical Observatory24, University of São Paulo25, Texas A&M University26, Princeton University27, California Institute of Technology28, University of Sussex29, Spanish National Research Council30, Oak Ridge National Laboratory31, Max Planck Society32
TL;DR: In this article, a new void finder for photometric surveys was proposed by projecting galaxies into 2D slices and finding voids in the smoothed 2D galaxy density field of the slice Fixing the line-of-sight size of the slices to be at least twice the photo-z scatter, the number of voids found in these projected slices of simulated spectroscopic and photometric galaxy catalogs is within 20% for all transverse void sizes.
Abstract: Galaxies and their dark matter halos populate a complicated filamentary network around large, nearly empty regions known as cosmic voids Cosmic voids are usually identified in spectroscopic galaxy surveys, where 3D information about the large-scale structure of the Universe is available Although an increasing amount of photometric data is being produced, its potential for void studies is limited since photometric redshifts induce line-of-sight position errors of ∼50 Mpc/h or more that can render many voids undetectable In this paper we present a new void finder designed for photometric surveys, validate it using simulations, and apply it to the high-quality photo-z redMaGiC galaxy sample of the Dark Energy Survey Science Verification (DES-SV) data The algorithm works by projecting galaxies into 2D slices and finding voids in the smoothed 2D galaxy density field of the slice Fixing the line-of-sight size of the slices to be at least twice the photo-z scatter, the number of voids found in these projected slices of simulated spectroscopic and photometric galaxy catalogs is within 20% for all transverse void sizes, and indistinguishable for the largest voids of radius ∼70 Mpc/h and larger The positions, radii, and projected galaxy profiles of photometric voids also accurately match the spectroscopic void sample Applying the algorithm to the DES-SV data in the redshift range 02
98 citations
Authors
Showing all 672 results
Name | H-index | Papers | Citations |
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J. S. Lange | 160 | 2083 | 145919 |
Diego F. Torres | 137 | 948 | 72180 |
M. I. Martínez | 134 | 1251 | 79885 |
Jose Flix | 133 | 1257 | 90626 |
Matteo Cavalli-Sforza | 129 | 1273 | 89442 |
Ilya Korolkov | 128 | 884 | 75312 |
Martine Bosman | 128 | 942 | 73848 |
Maria Pilar Casado | 128 | 981 | 78550 |
Clement Helsens | 128 | 870 | 74899 |
Imma Riu | 128 | 954 | 73842 |
Sebastian Grinstein | 128 | 1222 | 79158 |
Remi Zaidan | 126 | 744 | 71647 |
Arely Cortes-Gonzalez | 124 | 774 | 68755 |
Trisha Farooque | 124 | 841 | 69620 |
Martin Tripiana | 124 | 716 | 69652 |