Results 51 to 60 of about 2,712 (226)

oMEGACat. VII. Tracing Interstellar and Intracluster Medium of ω Centauri Using Sodium Absorptions

The Astrophysical Journal
We investigate the foreground interstellar medium along the line of sight and intracluster medium of ω Centauri ( ω Cen) by measuring the equivalent width of Na I D absorptions from MUSE observations. The large line-of-sight velocity difference between ω
Z. Wang, A. C. Seth, M. Latour, J. Strader, M. Häberle, N. Neumayer, C. Clontz, S. Kamann, M. S. Nitschai, M. Alfaro-Cuello, A. Bellini, A. Feldmeier-Krause, M. Libralato, A. P. Milone, P. J. Smith, S. O. Souza, G. van de Ven   +16 more
doaj   +1 more source

Enrichment of the Intracluster Medium [PDF]

, 1999
The relevance of galaxies of different luminosity and mass for the chemical enrichment of the intracluster medium (ICM) is analysed. For this purpose, I adopt the composite luminosity function of cluster galaxies from Trentham (1998), which exhibits a significant rise at the very faint end.
openaire   +2 more sources

A Two‐Temperature Model of the Intracluster Medium [PDF]

The Astrophysical Journal, 1998
We investigate evolution of the intracluster medium (ICM), considering the relaxation process between the ions and electrons. According to the standard scenario of structure formation, ICM is heated by the shock in the accretion flow to the gravitational potential well of the dark halo.
openaire   +2 more sources

A Generative Model for Realistic Galaxy Cluster X-Ray Morphologies

The Astrophysical Journal
The X-ray morphologies of clusters of galaxies display significant variations, reflecting their dynamical histories and the nonlinear dependence of X-ray emissivity on the density of the intracluster gas. Qualitative and quantitative assessments of X-ray
Maya Benyas, Jordan Pfeifer, Adam B. Mantz, Steven W. Allen, Elise Darragh-Ford   +4 more
doaj   +1 more source

Observational Predictions for the Survival of Atomic Hydrogen in Simulated Fornax-like Galaxy Clusters

The Astrophysical Journal
The presence of dense, neutral hydrogen clouds in the hot, diffuse intragroup and intracluster (IC) medium is an important clue to the physical processes controlling the survival of cold gas and sheds light on cosmological baryon flows in massive halos ...
Avinash Chaturvedi, Stephanie Tonnesen, Greg L. Bryan, Gergö Popping, Michael Hilker, Paolo Serra, Shy Genel   +6 more
doaj   +1 more source

Light Up a Nanocluster

Aggregate, Volume 7, Issue 1, January 2026.
Atomically precise metal nanoclusters are ultrasmall aggregates of metal atoms with finely tunable structures. They exhibit broad PL across visible to NIR wavelengths by tuning size, structure, and composition. The review addresses fundamental emission mechanisms and structure–property correlations, evaluating enhancement strategies (ligand ...
Xiuling Guo, Kaiyue Liu, Chaoqun Zheng, Along Ma, Shuxin Wang   +4 more
wiley   +1 more source

Surface Brightness Fluctuations in Two SPT Clusters: A Pilot Study

The Astrophysical Journal
Studies of surface brightness fluctuations in the intracluster medium present an indirect probe of turbulent properties such as the turbulent velocities, injection scales, and the slope of the power spectrum of fluctuations toward smaller scales.
Charles E. Romero, Massimo Gaspari, Gerrit Schellenberger, Bradford A. Benson, Lindsey E. Bleem, Esra Bulbul, Matthias Klein, Ralph Kraft, Paul Nulsen, Christian L. Reichardt, Laura Salvati, Taweewat Somboonpanyakul, Yuanyuan Su   +12 more
doaj   +1 more source

Quasar Feedback on the Intracluster Medium

The Astrophysical Journal, 2002
Galaxy groups are quite underluminous in X-rays compared to clusters, so the intracluster medium (ICM) has to be considerably underdense in the former. We consider this to be due to substantial energy fed back into the ICM when the baryons in the member galaxies condense into stars ending up in supernovae (SNe) or accrete onto central supermassive ...
Cavaliere, A., Lapi, A., Menci, N.
openaire   +5 more sources

Fuzzy‐Based Optimized Cluster Head Selection With Energy Prediction for Unequal Clustering in Wireless Sensor Networks

International Journal of Distributed Sensor Networks, Volume 2026, Issue 1, 2026.
The sensor network consists of several low‐powered electronic sensing devices that are strategically deployed in a predefined area to gather important information. The sensors have low computing capacity, constrained battery energy, and limited storage. Therefore, the sensed data should be communicated to the sink efficiently for further processing. In
Shivendra Kumar Pandey, Adwitiya Sinha, Buddha Singh, Wenling Li   +3 more
wiley   +1 more source

Iterative Optimization of the Maximum Directional Distance Function Model for Chinese Airline Transportation Efficiency Evaluations

Journal of Engineering, Volume 2026, Issue 1, 2026.
The maximum directional distance function (MDDF) model has been utilized extensively in diverse fields. However, due to practical constraints such as geographical factors, infrastructure limitations, and network scale, the theoretically improved projection paths derived from this model are often infeasible in real‐world applications.
Shenzi Yang, Fan Li, Arpan Hazra
wiley   +1 more source