Results 21 to 30 of about 166,709,059 (292)

Cluster-counterpart Voids: Void Identification from Galaxy Density Field

The Astrophysical Journal, 2023
We identify cosmic voids from galaxy density fields under the theory of void–cluster correspondence. We extend the previous novel void-identification method developed for the matter density field to the galaxy density field for practical applications ...
Junsup Shim, Changbom Park, Juhan Kim, Sungwook E. Hong   +3 more
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The Density Parity Model for the Evolution of the Subhalo Inner Spin Alignments with the Cosmic Web

The Astrophysical Journal, 2023
We develop a new model within which the radius-dependent transition of the subhalo inner spins with respect to the cosmic web and the variation of the transition threshold radius ( r _th ) with subhalo mass ( M _vir ), smoothing scale ( r _f ), and ...
Jun-Sung Moon, Jounghun Lee
doaj   +1 more source

Scalar–Tensor–Vector Modified Gravity in Light of the Planck 2018 Data

Universe, 2021
The recent data release by the Planck satellite collaboration presents a renewed challenge for modified theories of gravitation. Such theories must be capable of reproducing the observed angular power spectrum of the cosmic microwave background radiation.
John W. Moffat, Viktor Toth
doaj   +1 more source

Regularity of the Large-Scale Structure of the Universe [PDF]

Symposium - International Astronomical Union, 1999
The observed structure of the Universe is hierarchical. Galaxies and clusters of galaxies are concentrated within elongated filamentary chains of various richness. High-density regions of the Universe form superclusters consisting of one or several clusters of galaxies and chains of galaxies surrounding and joining clusters. The space between filaments
openaire   +3 more sources

Galaxy Clustering in the Mira-Titan Universe. I. Emulators for the Redshift Space Galaxy Correlation Function and Galaxy–Galaxy Lensing

The Astrophysical Journal, 2023
We construct accurate emulators for the projected and redshift space galaxy correlation functions and excess surface density as measured by galaxy–galaxy lensing, based on halo occupation distribution modeling.
Juliana Kwan, Shun Saito, Alexie Leauthaud, Katrin Heitmann, Salman Habib, Nicholas Frontiere, Hong Guo, Song Huang, Adrian Pope, Sergio Rodriguéz-Torres   +9 more
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Euclid preparation

Astronomy & Astrophysics
We investigated the accuracy and range of validity of the perturbative model for the two-point (2PCF) and three-point (3PCF) correlation functions in real space in view of the forthcoming analysis of the Euclid mission spectroscopic sample.
Guidi M., Veropalumbo A., Pugno A., Moresco M., Sefusatti E., Porciani C., Branchini E., Breton M.-A., Camacho Quevedo B., Crocce M., de la Torre S., Desjacques V., Eggemeier A., Farina A., Kärcher M., Linde D., Marinucci M., Moradinezhad Dizgah A., Moretti C., Pardede K., Pezzotta A., Sarpa E., Amara A., Andreon S., Auricchio N., Baccigalupi C., Bagot D., Baldi M., Bardelli S., Battaglia P., Biviano A., Brescia M., Camera S., Cañas-Herrera G., Capobianco V., Carbone C., Cardone V. F., Carretero J., Castellano M., Castignani G., Cavuoti S., Chambers K. C., Cimatti A., Colodro-Conde C., Congedo G., Conversi L., Copin Y., Courbin F., Courtois H. M., Da Silva A., Degaudenzi H., De Lucia G., Dole H., Douspis M., Dubath F., Dupac X., Dusini S., Escoffier S., Farina M., Farinelli R., Faustini F., Ferriol S., Finelli F., Fosalba P., Fotopoulou S., Frailis M., Franceschi E., Fumana M., Galeotta S., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Guzzo L., Haugan S. V. H., Holmes W., Hormuth F., Hornstrup A., Jahnke K., Jhabvala M., Joachimi B., Keihänen E., Kermiche S., Kiessling A., Kubik B., Kümmel M., Kunz M., Kurki-Suonio H., Le Brun A. M. C., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marcin S., Marggraf O., Markovic K., Martinelli M., Martinet N., Marulli F., Massey R., Medinaceli E., Mei S., Melchior M., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mora A., Morin B., Moscardini L., Munari E., Neissner C., Niemi S.-M., Padilla C., Paltani S., Pasian F., Pedersen K., Percival W. J., Pettorino V., Pires S., Polenta G., Poncet M., Popa L. A., Raison F., Rebolo R., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Saglia R., Sakr Z., Sánchez A. G., Sapone D., Sartoris B., Schewtschenko J. A., Schneider P., Schrabback T., Scodeggio M., Secroun A., Seidel G., Seiffert M., Serrano S., Simon P., Sirignano C., Sirri G., Spurio Mancini A., Stanco L., Steinwagner J., Tallada-Crespí P., Tavagnacco D., Taylor A. N., Tereno I., Tessore N., Toft S., Toledo-Moreo R., Torradeflot F., Tsyganov A., Tutusaus I., Valenziano L., Valiviita J., Vassallo T., Verdoes Kleijn G., Wang Y., Weller J., Zamorani G., Zerbi F. M., Zucca E., Allevato V., Ballardini M., Bolzonella M., Bozzo E., Burigana C., Cabanac R., Calabrese M., Cappi A., Di Ferdinando D., Escartin Vigo J. A., Gabarra L., Martín-Fleitas J., Matthew S., Maturi M., Mauri N., Metcalf R. B., Nucita A. A., Pöntinen M., Risso I., Scottez V., Sereno M., Tenti M., Viel M., Wiesmann M., Akrami Y., Andika I. T., Anselmi S., Archidiacono M., Atrio-Barandela F., Balaguera-Antolinez A., Bertacca D., Bethermin M., Blot L., Böhringer H., Borgani S., Brown M. L., Bruton S., Calabro A., Caro F., Carvalho C. S., Castro T., Cogato F., Conseil S., Contarini S., Cooray A. R., Cucciati O., Davini S., De Paolis F., Desprez G., Díaz-Sánchez A., Diaz J. J., Di Domizio S., Diego J. M., Dimauro P., Enia A., Fang Y., Ferrari A. G., Ferreira P. G., Finoguenov A., Franco A., Ganga K., García-Bellido J., Gasparetto T., Gautard V., Gaztanaga E., Giacomini F., Gianotti F., Gozaliasl G., Gutierrez C. M., Hernández-Monteagudo C., Hildebrandt H., Hjorth J., Joudaki S., Kajava J. J. E., Kang Y., Kansal V., Karagiannis D., Kiiveri K., Kirkpatrick C. C., Kruk S., Lattanzi M., Legrand L., Lembo M., Lepori F., Leroy G., Lesci G. F., Lesgourgues J., Leuzzi L., Liaudat T. I., Loureiro A., Macias-Perez J., Maggio G., Magliocchetti M., Mannucci F., Maoli R., Martins C. J. A. P., Maurin L., Miluzio M., Monaco P., Morgante G., Nadathur S., Naidoo K., Navarro-Alsina A., Nesseris S., Pagano L., Passalacqua F., Paterson K., Patrizii L., Pisani A., Potter D., Quai S., Radovich M., Reimberg P., Rocci P.-F., Rodighiero G., Sacquegna S., Sahlén M., Sanders D. B., Schneider A., Sciotti D., Sellentin E., Smith L. C., Sorce J. G., Tanidis K., Tao C., Testera G., Teyssier R., Tosi S., Troja A., Tucci M., Valieri C., Venhola A., Vergani D., Vernizzi F., Verza G., Vielzeuf P., Walton N. A.   +309 more
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No very large scale structure in an open universe

Physical Review D, 1995
We study the effects of negative spatial curvature on the statistics of inhomogeneities in open cosmological models. In particular we examine the suppression of large-separation correlations in density and gravitational potential fluctuations and the resulting suppression of large-angle correlations in the anisotropy of the microwave background ...
Stebbins, Albert, Caldwell, R. R.
openaire   +3 more sources

The Large-Scale Structure of the Universe [PDF]

, 2013
Galaxies are not uniformly distributed in space. On large scales the Universe displays coherent structure, with galaxies residing in groups and clusters on scales of ~1-3 Mpc/h, which lie at the intersections of long filaments of galaxies that are >10 Mpc/h in length.
openaire   +2 more sources

Objective-prism and slit-spectra redshifts in a study of the distribution of galaxies [PDF]

, 2014
A thorough and detailed investigation into the accuracy, reliability and consistency of the objective-prism redshift technique with changes in plate material, measuring machine and reduction techniques has been undertaken.
Parker, Quentin Andrew
core   +2 more sources

The Galaxy Number Density Profile of Halos

The Astrophysical Journal, 2023
More precise measurements of galaxy clustering will be provided by the next generation of galaxy surveys, such as DESI, WALLABY, and the Square Kilometre Array.
Fei Qin, David Parkinson, Adam R. H. Stevens, Cullan Howlett   +3 more
doaj   +1 more source