Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Elena Rasia"'
Autor:
Elena Rasia, Gustavo Yepes, Klaus Dolag, S. Ansarifard, Stefano Ettori, S. M. S. Movahed, Weiguang Cui, Giuseppe Murante, M. De Petris, Stefano Borgani, Veronica Biffi
Publikováno v:
Astronomy & Astrophysics
Accurate and precise measurements of masses of galaxy clusters are key to derive robust constraints on cosmological parameters. Rising evidence from observations, however, confirms that X-ray masses, obtained under the assumption of hydrostatic equil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38a737659b386a2f9201e69af0c4d5e4
https://www.aanda.org/articles/aa/full_html/2020/02/aa36742-19/aa36742-19.html
https://www.aanda.org/articles/aa/full_html/2020/02/aa36742-19/aa36742-19.html
Autor:
Mariachiara Rossetti, S. De Grandi, Simona Ghizzardi, Silvano Molendi, Stefano Ettori, Etienne Pointecouteau, Dominique Eckert, V. Ghirardini, Franco Vazza, Veronica Biffi, Massimo Gaspari, Hervé Bourdin, Mauro Roncarelli, Fabio Gastaldello, Elena Rasia, C. Tchernin
Publikováno v:
Astronomy & Astrophysics
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 621, pp.A40. ⟨10.1051/0004-6361/201833324⟩
arXiv.org e-Print Archive
Astronomy and Astrophysics-A&A, 2019, 621, pp.A40. ⟨10.1051/0004-6361/201833324⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 621, pp.A40. ⟨10.1051/0004-6361/201833324⟩
arXiv.org e-Print Archive
Astronomy and Astrophysics-A&A, 2019, 621, pp.A40. ⟨10.1051/0004-6361/201833324⟩
Galaxy clusters are the endpoints of structure formation and are continuously growing through the merging and accretion of smaller structures. Numerical simulations predict that a fraction of their energy content is not yet thermalized, mainly in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0419e14774a067c0e200ba6e0a8809f
Autor:
Giuseppe Murante, Gian Luigi Granato, Alexander M. Beck, Veronica Biffi, Klaus Dolag, Cinthia Ragone-Figueroa, Elena Rasia, Susana Planelles, Stefano Borgani, Massimo Gaspari
In this paper we investigate the level of hydrostatic equilibrium (HE) in the intra-cluster medium of simulated galaxy clusters, extracted from state-of-the-art cosmological hydrodynamical simulations performed with the Smoothed-Particle-Hydrodynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1aab7581d1b11a1393a13fa468ef5770
http://hdl.handle.net/11368/2891475
http://hdl.handle.net/11368/2891475
Autor:
Stefano Ettori, L.-M. Cheng, Stefano Borgani, Giuseppe Tormen, Elena Rasia, Lauro Moscardini, Pasquale Mazzotta, Klaus Dolag, Antonaldo Diaferio
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 369:2013-2024
We examine the systematics affecting the X-ray mass estimators applied to a set of five simulated galaxy clusters. They have been processed through the X-ray Map Simulator, X-MAS, to provide Chandra-like long exposures that are analyzed to reconstruc
Autor:
Daisuke Nagai, Kaylea Nelson, Erwin T. Lau, Pasquale Mazzotta, Camille Avestruz, Klaus Dolag, C. Ragone-Figueroa, Gian Luigi Granato, Elena Rasia, Giuseppe Murante, Stefano Borgani
Analyses of cosmological hydrodynamic simulations of galaxy clusters suggest that X-ray masses can be underestimated by 10%-30%. The largest bias originates from both violation of hydrostatic equilibrium (HE) and an additional temperature bias caused
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5469186972b3dd132bbf857fe4027c1a
http://hdl.handle.net/2108/177433
http://hdl.handle.net/2108/177433
Autor:
Hervé Bourdin, Stefano Ettori, Stefano Borgani, Luca Tornatore, Pasquale Mazzotta, Lauro Moscardini, Elena Rasia, Klaus Dolag
(Abridged)The X-ray measurements of the ICM metallicity are becoming more frequent due to the availability of powerful X-ray telescope with excellent spatial and spectral resolutions. The information which can be extracted from the measurements of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a77c5b5665366c74ed834b4d53923d55
https://hdl.handle.net/11368/1925928
https://hdl.handle.net/11368/1925928
Autor:
Giuseppe Murante, Elena Rasia, Giuseppe Tormen, Klaus Dolag, Lauro Moscardini, Antonaldo Diaferio, Pasquale Mazzotta, Stefano Borgani
The thermal properties of hydrodynamical simulations of galaxy clusters are usually compared to observations by relying on the emission-weighted temperature T_ew, instead of on the spectroscopic X-ray temperature T_spec, which is obtained by actual o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3be82769efcd4dc977b55223effb6190
http://hdl.handle.net/11585/2001
http://hdl.handle.net/11585/2001
Autor:
Giuseppe Tormen, Massimo Meneghetti, Elena Torri, Elena Rasia, Lauro Moscardini, Matthias Bartelmann
We study the impact of merger events on the strong lensing properties of galaxy clusters. Previous lensing simulations were not able to resolve dynamical time scales of cluster lenses, which arise on time scales which are of order a Gyr. In this case
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c8c1a4d48480aefb466982a4f85f689
http://arxiv.org/abs/astro-ph/0310898
http://arxiv.org/abs/astro-ph/0310898
Using high-resolution non-radiative hydrodynamic simulations of galaxy clusters we obtain simple analytic formulae for DM and gas distribution in the spherical approximation. We derive fits for the DM density, velocity dispersion and velocity anisotr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21fc1e7099bc9465e55c1b70277176fb
http://arxiv.org/abs/astro-ph/0309405
http://arxiv.org/abs/astro-ph/0309405