Results 21 to 30 of about 136 (129)

How do atomic code uncertainties affect abundance measurements in the intracluster medium?

open access: yesAstronomische Nachrichten, Volume 341, Issue 2, Page 203-209, February 2020., 2020
Abstract Accurate chemical abundance measurements of X‐ray‐emitting atmospheres pervading massive galaxies, galaxy groups, and clusters provide essential information on the star formation and chemical enrichment histories of these large‐scale structures.
François Mernier   +8 more
wiley   +1 more source

A CHANDRA STUDY OF TEMPERATURE DISTRIBUTIONS OF THE INTRACLUSTER MEDIUM IN 50 GALAXY CLUSTERS [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT To investigate the spatial distribution of the intracluster medium temperature in galaxy clusters in a quantitative way and probe the physics behind it, we analyze the X-ray spectra from a sample of 50 clusters that were observed with the Chandra ACIS instrument over the past 15 years and measure the radial temperature profiles ...
Zhenghao Zhu   +12 more
openaire   +2 more sources

The chemical evolution of galaxy clusters: Dissecting the iron mass budget of the intracluster medium [PDF]

open access: yesAstronomy & Astrophysics, 2020
Aims. We study the chemical evolution of galaxy clusters by measuring the iron mass in the ICM after dissecting the abundance profiles into different components. Methods. We used Chandra archival observations of 186 morphologically regular clusters in the redshift range of [0.04, 1.07].
Liu A.   +6 more
openaire   +3 more sources

Two‐Temperature Intracluster Medium in Merging Clusters of Galaxies [PDF]

open access: yesThe Astrophysical Journal, 1999
We investigate the evolution of intracluster medium during a cluster merger, explicitly considering the relaxation process between the ions and electrons by N-body and hydrodynamical simulations. When two subclusters collide each other, a bow shock is formed between the centers of two substructures and propagate in both directions along the collision ...
openaire   +2 more sources

SUPPRESSION OF ELECTRON THERMAL CONDUCTION IN THE HIGH β INTRACLUSTER MEDIUM OF GALAXY CLUSTERS [PDF]

open access: yesThe Astrophysical Journal Letters, 2016
ABSTRACT Understanding the thermodynamic state of the hot intracluster medium (ICM) in a galaxy cluster requires knowledge of the plasma transport processes, especially thermal conduction. The basic physics of thermal conduction in plasmas with ICM-like conditions has yet to be elucidated, however. We use particle-in-cell simulations and
Roberg-Clark, GT   +3 more
openaire   +3 more sources

A Comparison of the Galaxy Populations in the Coma and Distant Clusters: The Evolution of k+a Galaxies and the Role of the Intracluster Medium [PDF]

open access: yesThe Astrophysical Journal, 2004
21 pages, 7 figures, to appear in ApJ, version after referee's ...
Poggianti, B. M.   +7 more
openaire   +2 more sources

Uncertainty in Mass Determination of Galaxy Clusters due to the Bulk Motion of Intracluster Medium [PDF]

open access: yesSymposium - International Astronomical Union, 1998
Determination of the mass of cluster of galaxies (CG) is very important mainly because it relates to determination of cosmological density parameter (Ω0).
M. Takizawa, S. Mineshige
openaire   +1 more source

Generation of internal waves by buoyant bubbles in galaxy clusters and heating of intracluster medium [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2018
15 pages, 13 figures, submitted to ...
Zhang, C, Churazov, E, Schekochihin, A
openaire   +3 more sources

The XMM Cluster Survey: The interplay between the brightest cluster galaxy and the intra-cluster medium via AGN feedback [PDF]

open access: yesRoyal Astronomical Society. Monthly Notices, 2012
Accepted for publication in MNRAS - replaced to match corrected ...
Stott, John P.   +18 more
  +9 more sources

Dark Matter and Dark Energy Induced by Condensates

open access: yesAdvances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016
It is shown that the vacuum condensate induced by many phenomena behaves as a perfect fluid which, under particular conditions, has zero or negative pressure. In particular, the condensates of thermal states of fields in curved space and of mixed particles have been analyzed.
Antonio Capolupo   +1 more
wiley   +1 more source

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