Results 101 to 110 of about 170,764 (173)

On the Effects of Parameters on Galaxy Properties in CAMELS and the Predictability of Ωm

The Astrophysical Journal
Recent analyses of cosmological hydrodynamic simulations from CAMELS have shown that machine learning models can predict the parameter describing the total matter content of the universe, Ω _m , from the features of a single galaxy.
Gabriella Contardo, Roberto Trotta, Serafina Di Gioia, David W. Hogg, Francisco Villaescusa-Navarro   +4 more
doaj   +1 more source

The redshift and X-ray photon index evolutionary LX-LUV relations of quasars

Astronomy & Astrophysics
The LX-LUV relation serves as a cornerstone for extending the Hubble diagram to higher redshift by utilizing quasars as standard candles. However, the constancy of the LX-LUV relation has been embroiled in controversy recently.
Li Ge-Xing, Li Zhi-Hong, Song Na, Chen Chen, Dong Chao, Tian Jun-Wen, Zhang Zhi-Cheng, Li Jia-Ying-Hao, Tian Hui-Ling, Ma Mei-Yue-Nan   +9 more
doaj   +1 more source

Constraints on Interacting Dark Energy Models from the DESI Baryon Acoustic Oscillation and DES Supernovae Data

The Astrophysical Journal
The recent results from the first-year baryon acoustic oscillations (BAO) data released by the Dark Energy Spectroscopic Instrument (DESI), combined with cosmic microwave background (CMB) and Type Ia supernova (SN) data, have shown a detection of ...
Tian-Nuo Li, Peng-Ju Wu, Guo-Hong Du, Shang-Jie Jin, Hai-Li Li, Jing-Fei Zhang, Xin Zhang   +6 more
doaj   +1 more source

Evaluation of Multiparameter Likelihoods through Iteration of Two-dimensional Slices

The Astrophysical Journal
In this paper we introduce a method for resolving multiparameter likelihoods by fixing all parameter values but two. Evaluation of those two variables is followed by iteratively cycling through each of the parameters in turn until convergence.
Joel S. Jayson
doaj   +1 more source

The Dark Energy Survey Supernova Program: Cosmological Analysis and Systematic Uncertainties

The Astrophysical Journal
We present the full Hubble diagram of photometrically classified Type Ia supernovae (SNe Ia) from the Dark Energy Survey supernova program (DES-SN).
M. Vincenzi, D. Brout, P. Armstrong, B. Popovic, G. Taylor, M. Acevedo, R. Camilleri, R. Chen, T. M. Davis, J. Lee, C. Lidman, S. R. Hinton, L. Kelsey, R. Kessler, A. Möller, H. Qu, M. Sako, B. Sanchez, D. Scolnic, M. Smith, M. Sullivan, P. Wiseman, J. Asorey, B. A. Bassett, D. Carollo, A. Carr, R. J. Foley, C. Frohmaier, L. Galbany, K. Glazebrook, O. Graur, E. Kovacs, K. Kuehn, U. Malik, R. C. Nichol, B. Rose, B. E. Tucker, M. Toy, D. L. Tucker, F. Yuan, T. M. C. Abbott, M. Aguena, O. Alves, S. S. Allam, F. Andrade-Oliveira, J. Annis, D. Bacon, K. Bechtol, G. M. Bernstein, D. Brooks, D. L. Burke, A. Carnero Rosell, J. Carretero, F. J. Castander, C. Conselice, L. N. da Costa, M. E. S. Pereira, S. Desai, H. T. Diehl, P. Doel, I. Ferrero, B. Flaugher, D. Friedel, J. Frieman, J. García-Bellido, M. Gatti, G. Giannini, D. Gruen, R. A. Gruendl, D. L. Hollowood, K. Honscheid, D. Huterer, D. J. James, N. Kuropatkin, O. Lahav, S. Lee, H. Lin, J. L. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, A. Palmese, A. Pieres, A. A. Plazas Malagón, A. Porredon, A. K. Romer, A. Roodman, E. Sanchez, D. Sanchez Cid, M. Schubnell, I. Sevilla-Noarbe, E. Suchyta, M. E. C. Swanson, G. Tarle, C. To, A. R. Walker, N. Weaverdyck, M. Yamamoto, DES Collaboration   +98 more
doaj   +1 more source

Is It Possible to Know Cosmological Fine-tuning?

The Astrophysical Journal Supplement Series
Fine-tuning studies whether some physical parameters, or relevant ratios between them, are located within so-called life-permitting intervals of small probability outside of which carbon-based life would not be possible.
Daniel Andrés Díaz-Pachón, Ola Hössjer, Calvin Mathew   +2 more
doaj   +1 more source

Constraining the entropy corrected (m, n)-type pilgrim dark energy in fractal cosmology

European Physical Journal C: Particles and Fields
This study explores the impact of introducing particle and future event horizon as infrared (IR) cutoff on (m, n)-type entropy corrected versions of pilgrim dark energy. We investigate (m, n)-type power-law entropy corrected pilgrim dark energy in a flat
Alok Sardar, Ujjal Debnath
doaj   +1 more source

Time-Delay Cosmography: Measuring the Hubble Constant and Other Cosmological Parameters with Strong Gravitational Lensing. [PDF]

Space Sci Rev
Birrer S, Millon M, Sluse D, Shajib AJ, Courbin F, Erickson S, Koopmans LVE, Suyu SH, Treu T.   +8 more
europepmc   +1 more source

f(Q) gravity as a possible resolution of the H₀ and S₈ tensions with DESI DR2. [PDF]

Sci Rep
Kavya NS, Swagat Mishra S, Sahoo PK.
europepmc   +1 more source

A rising tide: intrinsic alignments since the turn of the millennium. [PDF]

Astron Astrophys Rev
Chisari NE.
europepmc   +1 more source