Advanced searches left 3/3

Boss - Astrophysics Data System

Summarized by Plex Scholar
Last Updated: 03 August 2022

* If you want to update the article please login/register

Cosmology with the EFTofLSS and BOSS: dark energy constraints and a note on priors

We analyze the BOSS DR12 galaxy power spectrum results in conjunction with BAO results for three models of dark energy. We can simplify our testing by using the BACCO linear emulator instead of a Boltzmann solver. Firstly, we examine 0̆39b CDM, repeating previous findings obtained with the same estimator. In the CMB-free situation, we find a low value of which is in accord with several previous assessments of the BOSS results. We then investigate the impact of the results on the priors of the nuisance parameters and find them to be instructive, with their spreading creating shifts in the contours.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220714784C/abstract


Combined full shape analysis of BOSS galaxies and eBOSS quasars using an iterative emulator

Structure modeling results in Fourier space are based on a universal power spectrum template developed at the Fiducial cosmology used to convert redshifts into distances and compress the cosmological data into Alcock-Paczynski parameters and the structure's linear growth rate. We present an analysis scheme that operates directly in the cosmology parameter space and adjusts the power spectrum template appropriately at each testing point. At various cosmologies within the 0̆39bCDM framework, predictions for the power spectrum multipoles from the TNS model are estimated. Our application results in a series of limitations on the cosmological parameters u03a9 cdm, H 03a9, u03a9 b, and n s are included in the final eBOSS QSO and LRG samples along with the low-z DR12 BOSS galaxy sample. The eBOSS quasar sample alone indicates a 3. 1 percent discrepancy compared to the Planck estimate.

Source link: https://ui.adsabs.harvard.edu/abs/2022MNRAS.tmp.2001N/abstract


The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey quasar sample: testing observational systematics on the Baryon Acoustic Oscillation measurement

We investigate the effect of observational techniques on the BAO measurement of the final sample of quasars from the extended Baryon Oscillation Survey Data Release 16 in this paper in order to plan and honed a similar study for forthcoming surveys. We also investigated how the BAO fitting model respond to the observational data. The BAO results obtained from the DR16 quasar survey are robust against imaging techniques that are well within the statistical error, as predicted, while reporting modestly revised limits that change the line-of-sight BAO value by less than 1% as expected. Although we find a marginal effect on the eBOSS QSO results, the study presented here is of utmost importance in limiting the nature of dark energy with the BAO symbol in the new era of big data cosmology.

Source link: https://ui.adsabs.harvard.edu/abs/2021MNRAS.506.2503M/abstract


Constraints on Single-Field Inflation from the BOSS Galaxy Survey

We give joint measurements on the amplitudes of the equilateral and orthogonal shapes in NL =940 b1600 and f NL ortho =-170 u00b1170. Our conservative analysis yields joint conclusions on the amplitudes of the equilateral and orthogonal figures. These can be used to derive constraints on the coefficients of the Lagrangian's effective single-field inflationary Lagrangian, as shown by the following: c s u22650. 013 at 95% CL. Fixeding the quadratic galaxy bias and cosmological parameters, the constraints can be tightened to f NL equil =260 u00b1120.

Source link: https://ui.adsabs.harvard.edu/abs/2022PhRvL.129b1301C/abstract


BOSS: Bottom-up Cross-modal Semantic Composition with Hybrid Counterfactual Training for Robust Content-based Image Retrieval

Content-Based Image Retrieval seeks a target image by simultaneously understanding the design of an example image and a companion text, which may have a wide variety of real-world services, such as internet search and fashion retrieval. In this scenario, the input picture serves as an intuitive context and background for the search, while the corresponding language explicitly demands that particular characteristics of the query image be changed in order to obtain the desired target image. On the other hand, we use implicit interaction and composition of cross-modal embeddings from the bottom local characteristics to the best global semantics, preserving and improving the visual representation conditioned on language semantics in several ongoing steps for efficient target image search in several continuous steps for effective target image search in several ongoing steps.

Source link: https://ui.adsabs.harvard.edu/abs/2022arXiv220704211Z/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions