Results 21 to 30 of about 1,031,806 (246)

Genome-Wide Identification and Structural Characterization of Secondary Metabolite Biosynthetic Gene Clusters in African Baobab (Adansonia digitata). [PDF]

open access: yesChem Biodivers
Genome‐wide computational analysis of the African baobab (Adansonia digitata) identifies 50 candidate biosynthetic gene clusters spanning terpene, polyketide, cyclopeptide, and lignan pathways, including nine BURP‐domain clusters linked to putative chemical defense.
Elshikh AA, Kabbashi AS, Musa IM.
europepmc   +2 more sources

ON THE DETERMINATION OF GALAXY STRUCTURE ELLIPTICITY

open access: yesOdessa Astronomical Publications, 2007
We discuss factors influencing the determination of the observed shape of galaxy clusters when the covariance ellipse method is involved. The analysis of 377 Abell clusters show that at greater distances from the cluster center the ellipticity is rather ...
M. Biernacka   +3 more
doaj   +1 more source

Cosmology with Clusters of Galaxies [PDF]

open access: yesParticle Physics and the Universe, 2000
I show that three independent methods utilizing clusters of galaxies - cluster dynamics and mass-to-light ratio, baryon fraction in clusters, and cluster evolution - all indicate the same robust result: the mass-density of the universe is low, Omega ~ 0.2, and the mass approximately traces light on large scales.
openaire   +4 more sources

Constraining Baryon Loading Efficiency of Active Galactic Nuclei with Diffuse Neutrino Flux from Galaxy Clusters

open access: yesThe Astrophysical Journal, 2023
Active galactic nuclei (AGNs) are widely believed to be one of the promising acceleration sites of ultrahigh-energy cosmic rays (CRs). Essentially, AGNs are powered by the gravitational energy of matter falling into supermassive black holes. However, the
Xin-Yue Shi   +3 more
doaj   +1 more source

THE PECULIARITIES IN O-TYPE GALAXY CLUSTERS

open access: yesOdessa Astronomical Publications, 2017
We present the results of analysis of 2D distribution of galaxies in galaxy cluster fields. The Catalogue of Galaxy Clusters and Groups PF (Panko & Flin) was used as input observational data set.
E. A. Panko, S. I. Emelyanov
doaj   +1 more source

Evolution of galaxies in clusters

open access: yesThe Astrophysical Journal, 1994
33 pages, normal ...
Charlot, S., Silk, J.
openaire   +2 more sources

Lensing by galaxy haloes in clusters of galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1997
17 pages, LaTeX file, MNRAS in ...
Natarajan, Priyamvada, Kneib, Jean-Paul
openaire   +2 more sources

Studying Cosmic Evolution with the XMM-Newton Distant Cluster Project [PDF]

open access: yes, 2007
Investigating X-ray luminous galaxy clusters at high redshift (z>~1) provides a challenging but fundamental constraint on evolutionary studies of the largest virialized structures in the Universe, the baryonic matter component in form of the hot ...
Fassbender, Rene
core   +1 more source

Early assembly of the most massive galaxies [PDF]

open access: yes, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins   +53 more
core   +1 more source

Deep Synoptic Array Science: Two Fast Radio Burst Sources in Massive Galaxy Clusters

open access: yesThe Astrophysical Journal Letters, 2023
The hot gas that constitutes the intracluster medium (ICM) has been studied at X-ray and millimeter/submillimeter wavelengths (Sunyaev–Zel’dovich effect) for decades.
Liam Connor   +24 more
doaj   +1 more source

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