Results 91 to 100 of about 184 (166)

Low-redshift Analogs of Cosmic Noon Galaxies as Laboratories for Clumpy Star Formation

The Astrophysical Journal
It has been established that a significant fraction of star formation at high redshift occurs in clumpy galaxies. The properties of clumps and their formation mechanisms, however, remain highly debated. In this work we analyze a sample of 18 supercompact
Jorge M. Santos-Junior, Thiago S. Gonçalves, Luidhy Santana-Silva, Arianna Cortesi, Karin Menendez-Delmestre, Amanda E. Araujo-Carvalho   +5 more
doaj   +1 more source

CANUCS: An Updated Mass and Magnification Model of A370 with JWST

The Astrophysical Journal
We present an updated mass and magnification model of galaxy cluster A370 using new NIRCam, NIRISS, and NIRSpec data from the Canadian NIRISS Unbiased Cluster Survey (CANUCS).
Rachel Gledhill, Victoria Strait, Guillaume Desprez, Gregor Rihtaršič, Maruša Bradač, Gabriel Brammer, Chris J. Willott, Nicholas Martis, Marcin Sawicki, Gaël Noirot, Ghassan T. E. Sarrouh, Adam Muzzin   +11 more
doaj   +1 more source

Testing general relativity with cosmological large scale structure. [PDF]

Gen Relativ Gravit, 2022
Durrer R.
europepmc   +1 more source

Accurate Measurement of the Lensing Magnification by BOSS CMASS Galaxies and Its Implications for Cosmology and Dark Matter

The Astrophysical Journal
Magnification serves as an independent and complementary gravitational lensing measurement to shear. We develop a novel method to achieve an accurate and robust magnification measurement around BOSS CMASS galaxies across physical scales of 0.016 h ^−1 ...
Kun Xu, Y. P. Jing, Hongyu Gao, Xiaolin Luo, Ming Li   +4 more
doaj   +1 more source

FLAMINGO: calibrating large cosmological hydrodynamical simulations with machine learning. [PDF]

Mon Not R Astron Soc, 2023
Kugel R, Schaye J, Schaller M, Helly JC, Braspenning J, Elbers W, Frenk CS, McCarthy IG, Kwan J, Salcido J, van Daalen MP, Vandenbroucke B, Bahé YM, Borrow J, Chaikin E, Huško F, Jenkins A, Lacey CG, Nobels FSJ, Vernon I.   +19 more
europepmc   +1 more source

Cosmological Constraints from Combining Photometric Galaxy Surveys and Gravitational Wave Observatories

The Open Journal of Astrophysics
Spatial variations in survey properties due to selection effects generate substantial systematic errors in large-scale structure measurements in optical galaxy surveys on very large scales.
E.L. Gagnon, D. Anbajagane, J. Prat, C. Chang, J. Frieman   +4 more
doaj   +1 more source

Encoding Collective Knowledge, Instructing Data Reusers: The Collaborative Fixation of a Digital Scientific Data Set. [PDF]

Comput Support Coop Work, 2021
Hoeppe G.
europepmc   +1 more source

Supermassive Dark Star candidates seen by JWST. [PDF]

Proc Natl Acad Sci U S A, 2023
Ilie C, Paulin J, Freese K.
europepmc   +1 more source

Detection of early-universe gravitational-wave signatures and fundamental physics. [PDF]

Gen Relativ Gravit, 2022
Caldwell R, Cui Y, Guo HK, Mandic V, Mariotti A, No JM, Ramsey-Musolf MJ, Sakellariadou M, Sinha K, Wang LT, White G, Zhao Y, An H, Bian L, Caprini C, Clesse S, Cline JM, Cusin G, Fornal B, Jinno R, Laurent B, Levi N, Lyu KF, Martinez M, Miller AL, Redigolo D, Scarlata C, Sevrin A, Haghi BSE, Shu J, Siemens X, Steer DA, Sundrum R, Tamarit C, Weir DJ, Xie KP, Yang FW, Zhou S.   +37 more
europepmc   +1 more source

Optimal cosmology from gravitational lensing: utilising the magnification and shear signals

, 2015
Gravitational lensing studies the distortions of a distant galaxy’s observed size, shape or flux due to the tidal bending of photons by matter between the source and observer. Such distortions can be used to infer knowledge on the mass distribution of the intervening matter, such as the dark matter halos in which clusters of individual galaxies may ...
openaire   +1 more source