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Scant evidence for thawing quintessence

(2025)

Authors:

William J Wolf, Carlos Garc铆a-Garc铆a, Deaglan J Bartlett, Pedro G Ferreira

ATClean: A Novel Method for Detecting Low-luminosity Transients and Application to Pre-explosion Counterparts from SN 2023ixf

The Astrophysical Journal American Astronomical Society 979:2 (2025) 114

Authors:

S Rest, A Rest, CD Kilpatrick, JE Jencson, S von Coelln, L Strolger, S Smartt, JP Anderson, A Clocchiatti, DA Coulter, L Denneau, S Gomez, A Heinze, R Ridden-Harper, KW Smith, B Stalder, JL Tonry, Q Wang, Y Zenati

Looking into the faintEst WIth MUSE (LEWIS): Exploring the nature of ultra-diffuse galaxies in the Hydra-I cluster

Astronomy & Astrophysics EDP Sciences 694 (2025) a276

Authors:

Chiara Buttitta, Enrichetta Iodice, Goran Doll, Johanna Hartke, Michael Hilker, Duncan A Forbes, Enrico M Corsini, Luca Rossi, Magda Arnaboldi, Michele Cantiello, Giuseppe D鈥橝go, Jesus Falc贸n-Barroso, Marco Gullieuszik, Antonio La Marca, Steffen Mieske, Marco Mirabile, Maurizio Paolillo, Marina Rejkuba, Marilena Spavone, Chiara Spiniello, Marc Sarzi

Molecular Gas Heating, Star Formation Rate Relations, and AGN Feedback in Infrared-luminous Galaxy Mergers

(2025)

Authors:

Duncan Farrah, Andreas Efstathiou, Jose Afonso, David L Clements, Kevin Croker, Evanthia Hatziminaoglou, Maya Joyce, Vianney Lebouteiller, Alaine Lee, Carol Lonsdale, Chris Pearson, Sara Petty, Lura K Pitchford, Dimitra Rigopoulou, Aprajita Verma, Lingyu Wang

Total Cost of Ownership and Evaluation of Google Cloud Resources for the ATLAS Experiment at the LHC

Computing and Software for Big Science Springer 9:1 (2025) 2

Authors:

G Aad, E Aakvaag, B Abbott, S Abdelhameed, K Abeling, NJ Abicht, SH Abidi, M Aboelela, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, A Ackermann, C Adam Bourdarios, L Adamczyk, SV Addepalli, MJ Addison, J Adelman, A Adiguzel, T Adye, AA Affolder, Y Afik, MN Agaras

Abstract:

The ATLAS Google Project was established as part of an ongoing evaluation of the use of commercial clouds by the ATLAS Collaboration, in anticipation of the potential future adoption of such resources by WLCG grid sites to fulfil or complement their computing pledges. Seamless integration of Google cloud resources into the worldwide ATLAS distributed computing infrastructure was achieved at large scale and for an extended period of time, and hence cloud resources are shown to be an effective mechanism to provide additional, flexible computing capacity to ATLAS. For the first time a total cost of ownership analysis has been performed, to identify the dominant cost drivers and explore effective mechanisms for cost control. Network usage significantly impacts the costs of certain ATLAS workflows, underscoring the importance of implementing such mechanisms. Resource bursting has been successfully demonstrated, whilst exposing the true cost of this type of activity. A follow-up to the project is underway to investigate methods for improving the integration of cloud resources in data-intensive distributed computing environments and reducing costs related to network connectivity, which represents the primary expense when extensively utilising cloud resources.