Results 131 to 140 of about 2,213,777 (304)
Orbital Decay and Tidal Disruption of a Star Cluster: Analytical Calculation [PDF]
, 2002 The orbital decay and tidal disruption of a star cluster in a galaxy is studied in an analytical manner. Owing to dynamical friction, the star cluster spirals in toward the center of the galaxy.
Fall S. M. +4 more
core +2 more sources
Discovery of a Low-mass Strong-lens System in SMACS J0723.3−7327
The Astrophysical Journal LettersWe report the discovery of an intriguing, low-mass galaxy-scale strong-lens system in the SMACS J0723.3−7327 galaxy cluster. By modeling James Webb Space Telescope imaging and Very Large Telescope Multi-Unit Spectroscopic Explorer spectroscopic data, we ...
Limeng Deng +8 more
doaj +1 more source
DISCRETE X-RAY SOURCES IN GALAXY CLUSTERS
Odessa Astronomical Publications, 2020 Current studies of extragalactic X-ray sources using data from orbital observatory XMM- Newton are at the front line of X-ray astronomy. Resolution capacity of the observatory instruments enable to detect separate X-ray sources in the close galaxies.
A. V. Tugay +2 more
doaj +1 more source
REDSHIFTS, SAMPLE PURITY, AND BCG POSITIONS FOR THE GALAXY CLUSTER CATALOG FROM THE FIRST 720 SQUARE DEGREES OF THE SOUTH POLE TELESCOPE SURVEY [PDF]
, 2012 We present the results of the ground- and space-based optical and near-infrared (NIR) follow-up of 224 galaxy cluster candidates detected with the Sunyaev–Zel'dovich (SZ) effect in the 720 deg2 of the South Pole Telescope (SPT) survey completed in the ...
J. Song +85 more
semanticscholar +1 more source
The Shape of the Chameleon Fifth-Force on the Mass Components of Galaxy Clusters
UniverseIn the context of chameleon gravity, we present a semi-analytical solution of the chameleon field profile in an accurately modelled galaxy cluster’s mass components, namely the stellar mass of the Brightest Cluster Galaxy (BCG), the baryonic mass in ...
Lorenzo Pizzuti +3 more
doaj +1 more source
XMM-Newton observations of the merging galaxy cluster CIZA J2242.8+5301 [PDF]
, 2012 We studied the intracluster medium of the galaxy cluster CIZA J2242.8+5301 using deep XMM-Newton observations. The cluster hosts a remarkable 2-Mpc long, ~50-kpc wide radio relic that has been nicknamed the "Sausage".
G. Ogrean +6 more
semanticscholar +1 more source
MHD SIMULATIONS OF ACTIVE GALACTIC NUCLEUS JETS IN A DYNAMIC GALAXY CLUSTER MEDIUM [PDF]
, 2012 We present a pair of three-dimensional magnetohydrodynamical simulations of intermittent jets from a central active galactic nucleus (AGN) in a galaxy cluster extracted from a high-resolution cosmological simulation. The selected cluster was chosen as an
P. Mendygral, T. Jones, K. Dolag
semanticscholar +1 more source
, 2011 Massive galaxy clusters at intermediate redshifts act as gravitational lenses that can magnify supernovae (SNe) occurring in background galaxies. We assess the possibility to use lensed SNe to put constraints on the mass models of galaxy clusters and the
A. Goobar +46 more
core +3 more sources
Clustering of Mass and Galaxies [PDF]
, 2001 These lectures cover various aspects of the statistical description of cosmological density fields. Observationally, this consists of the point process defined by galaxies, and the challenge is to relate this to the continuous density field generated by gravitational instability in dark matter.
openaire +3 more sources
Accuracy of the Photometric Redshifts of Brightest Cluster Galaxies Identified in the CFHTLS-W1
Journal of Advanced Research in Natural and Applied SciencesWe determine the accuracy of photometric redshifts for the brightest cluster galaxies (BCGs) identified in the W1 field of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS).
Sinan Aliş
doaj +1 more source