Improving statistical sensitivity of X-ray searches for axion-like particles by Conlon, J, Rummel, M

“…X-ray observations of bright AGNs in or behind galaxy clusters offer unique capabilities to constrain axion-like particles. …”

Molecular gas in the halo fuels the growth of a massive cluster galaxy at high redshift by Emonts, BHC, Lehnert, MD, Villar-Martin, M, Norris, RP, Ekers, RD, Van Moorsel, GA, Dannerbauer, H, Pentericci, L, Miley, GK, Allison, JR, Sadler, EM, Guillard, P, Carilli, CL, Mao, MY, Rottgering, HJA, De Breuck, C, Seymour, N, Gullberg, B, Ceverino, D, Jagannathan, P, Vernet, J, Indermuehle, BT

“…The largest galaxies in the universe reside in galaxy clusters. Using sensitive observations of carbon monoxide, we show that the Spiderweb galaxy—a massive galaxy in a distant protocluster—is forming from a large reservoir of molecular gas. …”

Jellyfish galaxies with the IllustrisTNG simulations: I. Gas-stripping phenomena in the full cosmological context by Yun, Kiyun, Pillepich, Annalisa, Zinger, Elad, Nelson, Dylan, Donnari, Martina, Joshi, Gandhali, Rodriguez-Gomez, Vicente, Genel, Shy, Weinberger, Rainer, Vogelsberger, Mark, Hernquist, Lars

“…Keywords: methods:numerical; galaxies:clusters:general; galaxies:clusters:intracluster medium; galaxies:evolution; galaxies:groups:general; cosmology:theory…”
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The Evolution of AGN Activity in Brightest Cluster Galaxies by McDonald, Michael

“…These results are consistent with previous studies in galaxy clusters as well as as in field galaxies. One way to explain this result is that member galaxies at high redshift tend to have more cold gas. …”
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The Clusters Hiding in Plain Sight (CHiPS) Survey: Complete Sample of Extreme BCG Clusters by Somboonpanyakul, Taweewat, McDonald, Michael, Gaspari, Massimo, Stalder, Brian, Stark, Antony A

“…Of the three new candidates, we confirm two newly discovered galaxy clusters: CHIPS 1356-3421 and CHIPS 1911+4455. …”
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The massive relic galaxy NGC 1277 is dark matter deficient : From dynamical models of integral-field stellar kinematics out to five effective radii by Comeron, S, Trujillo, I, Cappellari, M, Buitrago, F, Garduno, LE, Zaragoza-Cardiel, J, Zinchenko, IA, Lara-Lopez, MA, Ferre-Mateu, A, Dib, S

“…We speculate that the relative velocities of ≈2000 km s-1 required for the latter process to happen were possible in the progenitors of the present-day rich galaxy clusters.…”

High Frequency Cluster Radio Galaxies: Luminosity Functions and Implications for SZE Selected Cluster Samples by Gupta, N., Saro, A., Mohr, J. J., Benson, B. A., Bocquet, S., Capasso, R., Carlstrom, J. E., Chiu, I., Crawford, T. M., de Haan, T., Dietrich, J. P., Gangkofner, C., Holzapfel, W. L., McDonald, M., Rapetti, D., Reichardt, C. L.

“…We study the overdensity of point sources in the direction of X-ray-selected galaxy clusters from the meta-catalogue of X-ray-detected clusters of galaxies (MCXC; < z > = 0.14) at South Pole Telescope (SPT) and Sydney University Molonglo Sky Survey (SUMSS) frequencies. …”
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Heavy concerns about the light axino explanation of the 3.5 keV X-ray line by Stefano Colucci, Herbi K. Dreiner, Florian Staub, Lorenzo Ubaldi

“…An unidentified 3.5 keV line from X-ray observations of galaxy clusters has been reported recently. Although still under scrutiny, decaying dark matter could be responsible for this signal. …”
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Extended Gravity Constraints at Different Scales by Stanislav Alexeyev, Vyacheslav Prokopov

“…We review a set of the possible ways to constrain extended gravity models at Galaxy clusters scales (the regime of dark energy explanations and comparison with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mo>Λ</mo></semantics></math></inline-formula>CDM), for black hole shadows, gravitational wave astronomy, binary pulsars, the Solar system and a Large Hadron Collider (consequences for high-energy physics at TeV scale). …”
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Modifying gravity with the Aether: an alternative to Dark Matter by Zlosnik, T, Ferreira, P, Starkman, G

“…To be able to understand the properties of galaxies, clusters of galaxies and the universe on the whole it has become commonplace to invoke the presence of dark matter. …”

Conditions for the absence of infrared sensitivity in cosmological probes in any gravity theories by Matteo Magi, Jaiyul Yoo

“…Large-scale surveys allow us to construct cosmological probes such as galaxy clustering, weak gravitational lensing, the luminosity distance, and cosmic microwave background anisotropies. …”
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Dark matter in astrophysics/cosmology by Anne M. Green

“…Then we look at the observational evidence for dark matter, from observations of galaxies, galaxy clusters, the anisotropies in the cosmic microwave background radiation and large scale structure. …”
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The Evolution of Environmental Quenching Timescales to z ∼ 1.6: Evidence for Dynamically Driven Quenching of the Cluster Galaxy Population by Foltz, R., Wilson, G., Muzzin, A., Cooper, M. C., Nantais, J., van der Burg, R. F. J., Cerulo, P., Chan, J., Fillingham, S. P., Surace, J., Webb, T., Noble, A., Lacy, M., McDonald, Michael, Rudnick, G., Lidman, C., Demarco, R., Hlavacek-Larrondo, J., Yee, H. K. C., Perlmutter, S., Hayden, B.

“…Using a sample of four galaxy clusters at 1.35 < z < 1.65 and 10 galaxy clusters at 0.85 < z < 1.35, we measure the environmental quenching timescale, t Q, corresponding to the time required after a galaxy is accreted by a cluster for it to fully cease star formation. …”
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The Three Hundred project: Contrasting clusters optical and IR properties in hydrodynamical and dark matter only simulations by Muñoz A. Jiménez, Macías-Pérez J.F., Yepes G., Gómez J.S., Cui W., De Petris M., Ferragamo A.

“…In this paper, we use the galaxy clusters from The Three Hundred project to study this effect with their member galaxies. …”
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Lensing Effects in Retarded Gravity by Asher Yahalom

“…Here, we will show that considering general relativistic effects without neglecting retardation can explain the apparent excess matter leading to gravitational lensing in both galaxies and galaxy clusters.…”
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Planck and SPT cluster catalogs: A combined analysis by Salvati L.

“…The combination of these two experiments, with different resolution, mass and redshift range, allows to track the full cosmological evolution of galaxy clusters and the interplay between astrophysics and cosmology. …”
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Evidence for dark energy from the cosmic microwave background alone using the Atacama Cosmology Telescope lensing measurements. by Sherwin, B, Dunkley, J, Das, S, Appel, J, Bond, JR, Carvalho, C, Devlin, M, Dünner, R, Essinger-Hileman, T, Fowler, J, Hajian, A, Halpern, M, Hasselfield, M, Hincks, A, Hlozek, R, Hughes, J, Irwin, K, Klein, J, Kosowsky, A, Marriage, T, Marsden, D, Moodley, K, Menanteau, F, Niemack, MD, Nolta, MR

“…Our CMB-only measurement of the dark energy density Ω(Λ) confirms other measurements from supernovae, galaxy clusters, and baryon acoustic oscillations, and demonstrates the power of CMB lensing as a new cosmological tool.…”

Moffat MOdified Gravity (MOG) by Sreekanth Harikumar

“…In particular, we will present our original results obtained from the X-COP sample of galaxy clusters.…”
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Excess astrophysical photons from a 0.1-1 keV cosmic axion background. by Conlon, J, Marsh, M

“…We propose that axion-photon conversion may explain the observed excess emission of soft x rays from galaxy clusters, and may also contribute to the diffuse unresolved cosmic x-ray background. …”

Cosmological implications of neutrinos by Sarkar, S

“…Observations of galaxy clustering and large angle anisotropy in the cosmic microwave background have been interpreted as requiring that neutrinos provide about 20% of the critical density. …”