Results 51 to 60 of about 442,368 (316)

Galaxy transformation across the cosmic web: The influence zone of filaments

Astronomy & Astrophysics
Context. The matter distribution in the Universe exhibits a rich variety of structures, and they form the so-called cosmic web. These structures arise from the anisotropic gravitational collapse of primordial density fluctuations and define the pathways ...
Alfonso L. Aguerri J., Zarattini Stefano
doaj   +1 more source

Shock-heated Gas in the Large-Scale Structure of the Universe [PDF]

, 2004
Cosmological shock waves are a ubiquitous consequence of cosmic structure formation. They play a major role in heating baryonic gas in the large-scale structure of the universe. In this contribution we study the shock-heated gas in connection with shocks
Hyesung Kang, D. Ryu, R. Cen, D. Song
semanticscholar   +1 more source

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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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

Density perturbations in an Universe dominated by the Chaplygin gas [PDF]

, 2001
We study the fate of density perturbations in an Universe dominate by the Chaplygin gas, which exhibit negative pressure. We show that it is possible to obtain the value for the density contrast observed in large scale structure of the Universe by fixing
A. Vilenkin, J. C. Fabris, J. C. Fabris, J.C. Fabris, M. Bordemann, N. Ogawa, P. Brax, P. J. E. Peebles, P.E. de Souza, R. R. Caldwell, S. Permutter, S. Weinberg, S.V.B. Gonçalves, V. F. Mukhanov   +13 more
core   +2 more sources

Cosmic voids and the kinetic analysis

Astronomy & Astrophysics
We study the appearance and specific properties of the structures in the local Universe by means of the Vlasov kinetic technique. We consider the role of the cosmological constant in local structure formation via the theorem on the general function that ...
Gurzadyan V. G., Fimin N. N., Chechetkin V. M.   +2 more
doaj   +1 more source

Reoriented Memory of Galaxy Spins for the Early Universe

The Astrophysical Journal, 2023
Galaxy spins are believed to retain the initially acquired tendency of being aligned with the intermediate principal axis of the linear tidal field, which disseminates the prospect of using them as a probe of early universe physics. This roseate prospect,
Jun-Sung Moon, Jounghun Lee
doaj   +1 more source

Unclustered tracers remain unclustered

Astronomy & Astrophysics
Constraining primordial non-Gaussianities (PNGs) is one of the main goals of new-generation large-scale galaxy surveys. It had been proposed that unclustered tracers (with bias b1 = 0) could be optimal for PNG studies, and that these could be found by ...
Merino C., Avila S., Adame A. G., Anguren A., Gonzalez-Perez V., Meneses-Rizo J.   +5 more
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An Observed Transition of Galaxy Spins on Void Surfaces

The Astrophysical Journal Letters, 2023
In linear theory, the galaxy angular momentum vectors that originate from initial tidal interactions with surrounding matter distribution intrinsically develop perpendicular alignments with the directions of maximum matter compression, regardless of ...
Jounghun Lee, Jun-Sung Moon
doaj   +1 more source

Symmetries and consistency relations in the large scale structure of the universe [PDF]

, 2013
We study the symmetries enjoyed by the Newtonian equations of motion of the non-relativistic dark matter fluid coupled to gravity which give rise to the phenomenon of gravitational instability.
A. Kehagias, A. Riotto
semanticscholar   +1 more source