Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Riccardo Valdarnini"'
Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds
Autor:
Paolo Salucci, Giampiero Esposito, Gaetano Lambiase, Emmanuele Battista, Micol Benetti, Donato Bini, Lumen Boco, Gauri Sharma, Valerio Bozza, Luca Buoninfante, Antonio Capolupo, Salvatore Capozziello, Giovanni Covone, Rocco D’Agostino, Mariafelicia De Laurentis, Ivan De Martino, Giulia De Somma, Elisabetta Di Grezia, Chiara Di Paolo, Lorenzo Fatibene, Viviana Gammaldi, Andrea Geralico, Lorenzo Ingoglia, Andrea Lapi, Giuseppe G. Luciano, Leonardo Mastrototaro, Adele Naddeo, Lara Pantoni, Luciano Petruzziello, Ester Piedipalumbo, Silvia Pietroni, Aniello Quaranta, Paolo Rota, Giuseppe Sarracino, Francesco Sorge, Antonio Stabile, Cosimo Stornaiolo, Antonio Tedesco, Riccardo Valdarnini, Stefano Viaggiu, Andy A. V. Yunge
Publikováno v:
Frontiers in Physics, Vol 8 (2021)
In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of? that, even after 40 years from the Vera Rubin seminal discovery [1] does
Externí odkaz:
https://doaj.org/article/4fa357e39b4244298153f4c9ef9a5ab2
Autor:
Craig L. Sarazin, Riccardo Valdarnini
We present results from a suite of binary merging cluster simulations. The hydrodynamical cluster simulations are performed employing a smoothed particle hydrodynamics (SPH) formulation in which gradient errors are strongly reduced by means of an int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c961d81b54e6b865b26c1f8c39f46c81
http://arxiv.org/abs/2104.08358
http://arxiv.org/abs/2104.08358
Autor:
Riccardo Valdarnini
We present results from a large set of N-body/SPH hydrodynamical cluster simulations aimed at studying the statistical properties of turbulence in the ICM. The numerical hydrodynamical scheme employs a SPH formulation in which gradient errors are str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22249604655fa9cf48ff2f6a3b21e504
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 453:1608-1618
The main challenge for understanding the fuelling of supermassive black holes in active galactic nuclei is not to account for the source of fuel, but rather to explain its delivery from the boundaries of the black hole sphere of influence (10-100 pc)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb2f3fb2d76e727981f7b4423039e6fd
https://doi.org/10.1093/mnras/stv1749
https://doi.org/10.1093/mnras/stv1749
Autor:
Veronica Biffi, Riccardo Valdarnini
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 446:2802-2822
We study the thermal structure of the intra-cluster medium (ICM) in a set of cosmological hydrodynamical cluster simulations performed with an SPH numerical scheme employing an artificial conductivity (AC) term. We explore the effects of this term on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da1174b2f41d56f58bb3aac3487c7d86
https://doi.org/10.1093/mnras/stu2278
https://doi.org/10.1093/mnras/stu2278
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 438:1698-1713
One of the greatest issues in modelling black hole fuelling is our lack of understanding of the processes by which gas loses angular momentum and falls from galactic scales down to the nuclear region where an accretion disc forms, subsequently guidin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5f830dd2d2df72c168961a5d05d7d80
https://doi.org/10.1093/mnras/stt2316
https://doi.org/10.1093/mnras/stt2316
Autor:
Riccardo Valdarnini
Publikováno v:
New Astronomy. 12:71-93
Results from a large sample of hydrodynamical/N-body simulations of galaxy clusters in a LCDM cosmology are used to simulate cluster X-ray observations as expected from Chandra observations. The physical modeling of the gas includes radiative cooling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd710af0f00ad00a45ed0080a6752d92
https://doi.org/10.1016/j.newast.2006.06.005
https://doi.org/10.1016/j.newast.2006.06.005
Autor:
Federico Sembolini, Riccardo Valdarnini, M. De Petris, Veronica Biffi, Gustavo Yepes, Stefan Gottlöber
We present the X-ray properties and scaling relations of a large sample of clusters extracted from the Marenostrum MUltidark SImulations of galaxy Clusters (MUSIC) dataset. We focus on a sub-sample of 179 clusters at redshift z~0.11, with 3.2e14M_sun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4fb1d11e18edc01b12a1e7fc1708363
Publikováno v:
Astronomy & Astrophysics. 379:412-425
We explore the morphological and dynamical evolution of galaxy clusters in simulations using scalar and vector-valued Minkowski valuations and the concept of fundamental plane relations. In this context, three questions are of fundamental interest: 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe313c429d4f96aee3a29927cce588f7
https://doi.org/10.1051/0004-6361:20011319
https://doi.org/10.1051/0004-6361:20011319
Autor:
Riccardo Valdarnini
Publikováno v:
The Astrophysical Journal. 831:103
In this paper we present results from a series of hydrodynamical tests aimed at validating the performance of a smoothed particle hydrodynamics (SPH) formulation in which gradients are derived from an integral approach. We specifically investigate th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::471259f565565790592a0669fa4aa663
https://doi.org/10.3847/0004-637x/831/1/103
https://doi.org/10.3847/0004-637x/831/1/103