Results 31 to 40 of about 87,875 (159)

The relationship between Gas and Galaxies [PDF]

, 2009
We have investigated the 2D 2-point correlation function, ƐAG, between low column density Lya absorbers and galaxies at a redshift z ~ 1 for the first time.
Shone, Allen Maurice
core  

Pantheon+ and Redshift Observational Analysis of the UMH Redshift Formulation

Reports in Advances of Physical Sciences
We present a data-driven observational analysis of the ultronic medium hypothesis (UMH) framework redshift formulation and luminosity relation against Type Ia supernovae in the Pantheon+ sample.
Andrew S. Dodge
doaj   +1 more source

Designing a space-based galaxy redshift survey to probe dark energy [PDF]

, 2010
A space-based galaxy redshift survey would have enormous power in constraining dark energy and testing general relativity, provided that its parameters are suitably optimized.
Cimatti, A., James E. Geach, Geach, J.E., Carbone, Carmelita, Wang Yun, Orsi, A., Samushia, L., Garilli, Bianca, Franzetti, P., Zamorani, Giovanni, Paolo Franzetti, Rosati Piero, Rosati, P., Mukherjee, P., Zamorani Giovanni, Mukherjee Pia, Garilli Bianca, Piero Rosati, Cimatti A, Pia Mukherjee, Wang Y, Lacey Cedric G., Garilli B, Baugh CM, Geach, James E., Percival Will, Mukherjee, Pia, Rosati, Piero, Lacey, C.G., Percival, Will, Carmelita Carbone, Geach James E., Zamorani, G., Lacey, Cedric G., Franzetti, Paolo, Carbone, C., Orsi A, Percival, W., Mukherjee P, Wang, Yun, Wang, Y., Majerotto E, Guzzo L, Baugh, C.M., Samushia, Lado, Franzetti P, Will Percival, Orsi, Alvaro, Baugh, Carlton M., Luigi Guzzo, Guzzo, L., Percival W, Guzzo, Luigi, Samushia L, Samushia Lado, Lado Samushia, Carbone C, Franzetti Paolo, Majerotto, Elisabetta, Cimatti, Andrea, Majerotto Elisabetta, Geach JE, Andrea Cimatti, Alvaro Orsi, Orsi Alvaro, Garilli, B., Baugh Carlton M., Lacey CG, Giovanni Zamorani, Yun Wang, Majerotto, E., Bianca Garilli, Cedric G. Lacey, Guzzo Luigi, Elisabetta Majerotto, Carlton M. Baugh, Zamorani G.   +76 more
core   +1 more source

On the Anticorrelation between Duration and Redshift in Gamma-Ray Bursts

The Astrophysical Journal, 2023
For gamma-ray bursts (GRBs) with durations greater than two seconds (so-called long GRBs), the intrinsic prompt gamma-ray emission appears, on average, to last longer for bursts at lower redshifts.
Nicole Lloyd-Ronning, Jarrett Johnson, Roseanne M. Cheng, Ken Luu, Phoebe Upton Sanderbeck, Lailani Kenoly, Celia Toral   +6 more
doaj   +1 more source

Observability of Far-Infrared lines with ALMA to confirm spectroscopic redshift of primordial galaxies

, 2022
openIl nuovo telescopio spaziale James Webb Space Telescope ha identificato possibili galassie primordiali, con proprietà molto varie, fino a redshift superiori a 12.
BALESTRA, DANIELE
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A JWST Pure-Parallel Search for the First Galaxies With PANORAMIC

Edinburgh Student Journal of Science
The James Webb Space Telescope offers unparalleled capabilities for observing the most distant objects in the universe, allowing us to study the first galaxies to form. In this work, the Lyman-break technique and spectral energy distribution fitting were
Hanna Golawska, Derek McLeod
doaj   +1 more source

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
core   +1 more source

The effect of the environment on the evolution of galaxy colours [PDF]

, 2006
In chapter 1 of this thesis, I give a brief overview of the birth of modern cosmology and the growth of the current paradigm. I then go on to describe the different types of galaxies, the star formation rates within them and give some notes about galaxy ...
Davies, Gregory Tudor
core  

Tight cosmological constraints from the angular-size/redshift relation for ultra-compact radio sources [PDF]

, 2004
Research in observational cosmology; gives a more refined analysis of data set considered in Jackson & Dodgson (1997), including selection effects and sensitivity to redshift binning.
Jackson, John
core   +1 more source

Comparative study on zinc oxide nanocrystals synthesized by two precipitation methods

Cerâmica
Zinc oxide nanocrystals were synthesized by two precipitation methods successfully. The nanocrystals prepared via method I (zinc acetate dihydrate precipitation with KOH) were smaller in crystallite size (~20 nm) as compared to method II (zinc nitrate ...
M. R. Bodke, Y. Purushotham, B. N. Dole
doaj   +1 more source