Results 61 to 70 of about 1,031,806 (246)
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 +2 more sources
Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems
Astronomische Nachrichten, EarlyView.ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley +1 more source
Constrain the Hubble Constant from Extreme Mass Ratio Inspirals Dark Sirens Using Galaxy Clusters
The Astrophysical JournalExtreme mass ratio inspirals (EMRIs) are key observational targets for future space-based gravitational wave detectors and hold significant value in cosmological research.
Jian-Dong Liu, Wen-Biao Han, Qianyun Yun
doaj +1 more source
Form flows function: Learner‐centered game Re‐design in a STEM classroom
British Educational Research Journal, EarlyView.Abstract Re‐designing games facilitates interest‐driven learning and immerses learners in systems thinking. However, there are limited studies exploring how the form and function of tabletop games influence learners' design decisions and learning experiences. To address this gap, we conducted a mixed‐methods study in a STEM classroom in western Canada.
Farzan Baradaran Rahimi +2 more
wiley +1 more source
Equine Veterinary Journal, EarlyView.Abstract Background Force plates (FP) are considered the gold standard for quantitative equine gait evaluation but are limited to experimental use. An instrumented hoof boot (IHB) with pressure sensors and an inertial measurement unit would allow clinicians to objectively assess kinetic parameters and gait symmetry.
Jasmin Keller +3 more
wiley +1 more source
Constraining dark energy using real and mock galaxy surveys [PDF]
, 2009 In this thesis, we study how dark energy may be constrained by measurements of large-scale clustering in future galaxy surveys, and through the imprint of a time-varying large-scale potential on the CMB (the integrated Sachs-Wolfe effect).
CAI, YANCHUAN
core
The Astrophysical JournalWe present an algorithm designed to identify galaxy (proto)clusters in wide-area photometric surveys by first selecting their dominant galaxy—i.e., the brightest cluster galaxy (BCG) or protoBCG—through the local stellar mass density traced by massive ...
Marcelo C. Vicentin +3 more
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CCD Photometry of the Globular Cluster NGC 4372 [PDF]
Journal of Astronomy and Space Sciences, 1994 We present a deep (B, V) color-magnitude diagram (CMD) of the Galactic globular cluster NGC 4372. According to the recent inside-out picture of Galaxy formation, this cluster is predicted to be one of the oldest globular clusters in the Galaxy.
Hong-Suh Yim +2 more
doaj
DETAILED MORPHOLOGY OF THE RICH CONCENTRATED GALAXY CLUSTERS
Odessa Astronomical Publications, 2018 The results of the detailed analysis of the 2D distribution of galaxies in 28 rich galaxy clusters with significant concentration to the cluster center are present.
E. Panko, A. Sirginava, A. Stepaniuk
doaj +1 more source
The Hubble constant from galaxy cluster scaling-relation and SNe Ia observations: a consistency test
European Physical Journal C: Particles and Fields, 2023 In this paper, we propose a self-consistent test for a Hubble constant estimate using galaxy cluster and type Ia supernovae (SNe Ia) observations. The approach consists, in a first step, of obtaining the observational value of the galaxy cluster scaling ...
Kamal Bora, R. F. L. Holanda
doaj +1 more source