Showing 21 - 40 results of 101 for search '"redshift"', query time: 0.05s Refine Results
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    Deep Swift/UVOT Observations of GOODS-N and the Evolution of the Ultraviolet Luminosity Function at 0.2 < z < 1.2 by Alexander Belles, Caryl Gronwall, Michael H. Siegel, Robin Ciardullo, Mat J. Page

    Published 2025-01-01
    “…Using our catalog of detected galaxies, we calculate the UV galaxy number counts as a function of apparent magnitude and compute the UV luminosity function (LF) and its evolution with redshift. From the LF fits in various redshift bins, we calculate the star formation rate density as a function of redshift and find evolution consistent with past works. …”
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  10. 30

    A Study on the Line of Sight to Galaxies Detected at Gamma-Ray Energies by Amy Furniss, Josepf N. Amador, Olivier Hervet, Ollie Jackson, David A. Williams

    Published 2025-01-01
    “…The LAT-detected AGN between a redshift of 0.4 and 0.7 show higher voidiness compared to the redshift-matched SDSS QSO populations, with a median p -value of 2.3 × 10 ^−5 (a 4.1 σ deviation). …”
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  11. 31

    A comparison of Bayesian and frequentist confidence intervals in the presence of a late Universe degeneracy by Eoin Ó. Colgáin, Saeed Pourojaghi, M. M. Sheikh-Jabbari, Darragh Sherwin

    Published 2025-02-01
    “…Projected 1D posteriors for $$\Lambda $$ Λ CDM cosmological parameters become more non-Gaussian with increasing effective redshift when the model is fitted to redshift-binned data in the late Universe. …”
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  12. 32

    Constraining the Parameters of Modified Chaplygin Gas in Einstein-Aether Gravity by Ujjal Debnath

    Published 2014-01-01
    “…We present the Hubble parameter in terms of some unknown parameters and observational parameters with the redshift z. From observed Hubble data (OHD) set (12 points), we have obtained the bounds of the arbitrary parameters (A,B) of MCG by minimizing the χ2 test. …”
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  13. 33

    What Drives the H i Content of Central Galaxies—A Comparison between Hydrodynamic Simulations and Observations Using Random Forest by Xiao Li, Cheng Li, H. J. Mo

    Published 2025-01-01
    “…We investigate the driving mechanisms for the H i gas content in star-forming central galaxies at low redshift, by examining the H i -to-stellar mass ratio ( M _H _i / M _* ) in both the state-of-the-art hydrodynamic simulations, IllustrisTNG (TNG) and EAGLE, and the xGASS sample. …”
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  14. 34

    Influence of variation in indium concentration and temperature on the threshold current density in InxGa1-xAs/GaAs QD laser diodes by Zainab M. Alharbi, M.S. Al-Ghamdi

    Published 2025-01-01
    “…This redshift, attributable to variations in bandgap energy that decrease as indium content increases, highlights QD laser instability. …”
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  15. 35

    Lorentz Distributed Noncommutative F(T,TG) Wormhole Solutions by M. Sharif, Kanwal Nazir

    Published 2018-01-01
    “…We take a particular redshift function and two F(T,TG) models. We analyze the behavior of shape function and also examine null as well as weak energy conditions graphically. …”
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  16. 36

    Intrinsic Pulse Widths of FRB 20121102A and Calculation of Broadening from Propagation and Instrumental Effects by Jia-Peng Wei, Yong-Feng Huang, Lang Cui, Xiang Liu, Jin-Jun Geng, Xue-Feng Wu

    Published 2025-01-01
    “…Various effects such as the scattering broadening, the redshift-induced broadening, and the instrumental broadening are examined. …”
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  17. 37

    5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM by Keir K. Rogers, Vivian Poulin

    Published 2025-01-01
    “…We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wave number ∼1hMpc^{−1} and redshift = 3. Model extensions can alleviate this tension: running in the tilt of the primordial power spectrum (α_{s}∼−0.01); a fraction ∼(1−5)% of ultralight axion dark matter (DM) with particle mass ∼10^{−25} eV or warm DM with mass ∼10 eV. …”
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  18. 38

    Will There Be Future Deceleration? A Study of Particle Creation Mechanism in Nonequilibrium Thermodynamics by Supriya Pan, Subenoy Chakraborty

    Published 2015-01-01
    “…The deceleration parameter (q) is expressed as a function of the redshift parameter (z), and its variation is presented graphically. …”
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    Cosmology in the Universe with Distance Dependent Lorentz-Violating Background by C. A. G. Almeida, M. A. Anacleto, F. A. Brito, E. Passos, J. R. L. Santos

    Published 2017-01-01
    “…We consider a cosmological setup with inflaton in the presence of a redshift dependent Lorentz-violating time-like background to address the inflationary regime and other phases of the Universe. …”
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    A Cosmological Scaling Relation for Describing the Late Time Dynamics by Gerardo Cristofano, Orlando Luongo

    Published 2013-01-01
    “…Particularly, the broad interest on matching the scaling law, from early to late redshift regimes, may suggest the mechanism to relate quantum and classical aspects of gravity. …”
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