On the total absorption cross-section of galaxies - II: The case of λ cosmologies and covering factor variation by Ćirković M.M., Samurović S.

“…This problem is highly illustrative of the basic tenets of modern observational cosmology.…”
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Degenerate Bogdanov–Takens bifurcations in a bulk viscous cosmology by Asmaa Abdel Azim, Adel Awad, E. I. Lashin

“…Typical issues such as late acceleration or inflation that can be induced by viscosity and could have relevance to observational cosmology are also discussed.…”
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Commentary: JWST near-infrared detector degradation— finding the problem, fixing the problem, and moving forward by Bernard J. Rauscher, Carl Stahle, Robert J. Hill, Matthew Greenhouse, James Beletic, Sachidananda Babu, Peter Blake, Keith Cleveland, Emmanuel Cofie, Bente Eegholm, C. W. Engelbracht, Donald N. B. Hall, Alan Hoffman, Basil Jeffers, Christine Jhabvala, Randy A. Kimble, Stanley Kohn, Robert Kopp, Don Lee, Henning Leidecker, Don Lindler, Robert E. McMurray Jr., Karl Misselt, D. Brent Mott, Raymond Ohl, Judith L. Pipher, Eric Piquette, Dan Polis, Jim Pontius, Marcia Rieke, Roger Smith, W. E. Tennant, Liqin Wang, Yiting Wen, Christopher N. A. Willmer, Majid Zandian

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Einstein’s Geometrical versus Feynman’s Quantum-Field Approaches to Gravity Physics: Testing by Modern Multimessenger Astronomy by Yurij Baryshev

“…A very important task of observational cosmology is to perform large surveys of galactic distances independent on cosmological redshifts for testing the nature of the Hubble law and peculiar velocities. …”
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Quantum entanglement for continuous variables sharing in an expanding spacetime by Wen-Mei Li, Rui-Di Wang, Hao-Yu Wu, Xiao-Li Huang, Hao-Sheng Zeng, Shu-Min Wu

“…Therefore, the dynamical entanglement of the Gaussian state in an expanding universe encodes historical information about the underlying spacetime structure, suggesting a promising application in observational cosmology. We find that quantum entanglement is more sensitive to the expansion rate than the expansion volume. …”
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Perfect Fluid with Heat Flow in f(T) Theory of Gravity by D.D. Pawar, N.G. Ghungarwar, P.S. Gaikwad

“…Our findings not only contribute to a deeper understanding of the dynamics of Bianchi Type-I cosmological models but also  provide a foundation for comparing f(T) gravity with standard general relativity in the context of observational cosmology. This research paves the way for further exploration of alternative gravity theories and their implications for the early Universe’s evolution and structure.…”
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Galaxy groups at 0.3 ≤ z ≤ 0.55 - II. Evolution to z ∼ 0 by Wilman, D, Balogh, M, Bower, R, Mulchaey, J, Oemler, A, Carlberg, R, Eke, V, Lewis, I, Morris, S, Whitaker, R

“…We compare deep Magellan spectroscopy of 26 groups at 0.3 ≤ z ≤ 0.55, selected from the Canadian Network for Observational Cosmology 2 field survey, with a large sample of nearby groups from the 2PIGG catalogue. …”

Galaxy Groups at 0.3 <= z <= 0.55. II. Evolution to z ~ 0 by Wilman, D, Balogh, M, Bower, R, Mulchaey, J, Jnr, A, Carlberg, R, Eke, V, Lewis, I, Morris, S, Whitaker, R

“…We compare deep Magellan spectroscopy of 26 groups at 0.3 <= z <= 0.55, selected from the Canadian Network for Observational Cosmology 2 field survey (CNOC2), with a large sample of nearby groups from the 2PIGG catalogue (Eke et al., 2004). …”

Normal black holes in bulge-less galaxies: the largely quiescent, merger-free growth of black holes over cosmic time by Martin, G, Kaviraj, S, Volonteri, M, Simmons, B, Devriendt, J, Lintott, C, Smethurst, R, Dubois, Y, Pichon, C

“…Understanding the processes that drive the formation of black holes (BHs) is a key topic in observational cosmology. While the observed $M_{\mathrm{BH}}$--$M_{\mathrm{Bulge}}$ correlation in bulge-dominated galaxies is thought to be produced by major mergers, the existence of a $M_{\mathrm{BH}}$--$M_{\star}$ relation, across all galaxy morphological types, suggests that BHs may be largely built by secular processes. …”

Modelling baryonic feedback for survey cosmology by Elisa Chisari, Alexander J. Mead, Shahab Joudaki, Pedro G. Ferreira, Aurel Schneider, Joseph Mohr, Tilman, David Alonso, Ian G. McCarthy, Sergio Martin-Alvarez, Julien Devriendt, Adrianne Slyz, Marcel P. van Daalen

“…Observational cosmology in the next decade will rely on probes of the distribution of matter in the redshift range between 0<z<3 to elucidate the nature of dark matter and dark energy. …”
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Understanding shape and centroid deviations in 39 strong lensing galaxy clusters in various dynamical states by Gassis Raven, Bayliss Matthew B., Sharon Keren, Mahler Guillaume, Gladders Michael D., Dahle Håkon, Florian Michael K., Rigby Jane R., McDonald Michael, Elicker Lauren, Owens M. Riley

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Search for the f(R, T) gravity functional form via gaussian processes by J. A. S. Fortunato, P. H. R. S. Moraes, J. G. de Lima Júnior, E. Brito

“…Lastly, we encourage the application of the functional form herewith obtained to other current problems of observational cosmology and astrophysics, such as the rotation curves of galaxies.…”
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Probing the Dipole of the Diffuse Gamma-Ray Background by A. Kashlinsky, F. Atrio-Barandela, C. S. Shrader

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Gravitational Fluctuations as an Alternative to Inflation III. Numerical Results by Herbert W. Hamber, Lu Heng Sunny Yu, Hasitha E. Pituwala Kankanamge

“…The key ingredients in this new picture are the appearance of a nontrivial gravitational vacuum condensate (directly related to the observed cosmological constant), and a calculable renormalization group running of Newton’s <i>G</i> on cosmological scales. …”
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A Generalist, Automated ALFALFA Baryonic Tully–Fisher Relation by Catie J. Ball, Martha P. Haynes, Michael G. Jones, Bo Peng, Adriana Durbala, Rebecca A. Koopmann, Joseph Ribaudo, Aileen A. O’Donoghue

“…The baryonic Tully–Fisher relation (BTFR) has applications in galaxy evolution as a test bed for the galaxy–halo connection and in observational cosmology as a redshift-independent secondary distance indicator. …”
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Medium-resolution 0.97–5.3 μm Spectra of Very Young Benchmark Brown Dwarfs with NIRSpec on Board the James Webb Space Telescope by Elena Manjavacas, Pascal Tremblin, Stephan Birkmann, Jeff Valenti, Catarina Alves de Oliveira, Tracy L. Beck, G. Giardino, N. Lützgendorf, B. J. Rauscher, M. Sirianni

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The Line-of-Sight Analysis of Spatial Distribution of Galaxies in the COSMOS2015 Catalogue by Maxim Nikonov, Mikhail Chekal, Stanislav Shirokov, Andrey Baryshev, Vladimir Gorokhov

“…One of the main directions of modern observational cosmology is the analysis of the large-scale structure of Universe, in particular, in deep fields. …”
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JWST/NIRSpec Observations of the Planetary Mass Companion TWA 27B by K. L. Luhman, P. Tremblin, S. M. Birkmann, E. Manjavacas, J. Valenti, C. Alves de Oliveira, T. L. Beck, G. Giardino, N. Lützgendorf, B. J. Rauscher, M. Sirianni

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Small Region, Big Impact: Highly Anisotropic Lyman-continuum Escape from a Compact Starburst Region with Extreme Physical Properties by Keunho J. Kim, Matthew B. Bayliss, Jane R. Rigby, Michael D. Gladders, John Chisholm, Keren Sharon, Håkon Dahle, T. Emil Rivera-Thorsen, Michael K. Florian, Gourav Khullar, Guillaume Mahler, Ramesh Mainali, Kate A. Napier, Alexander Navarre, M. Riley Owens, Joshua Roberson

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Cosmic Evolution of Gas and Star Formation by Nick Scoville, Andreas Faisst, John Weaver, Sune Toft, Henry J. McCracken, Olivier Ilbert, Tanio Diaz-Santos, Johannes Staguhn, Jin Koda, Caitlin Casey, David Sanders, Bahram Mobasher, Nima Chartab, Zahra Sattari, Peter Capak, Paul Vanden Bout, Angela Bongiorno, Catherine Vlahakis, Kartik Sheth, Min Yun, Herve Aussel, Clotilde Laigle, Dan Masters

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