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Last Updated: 03 June 2022

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Atacama Cosmology Telescope: Modeling the gas thermodynamics in BOSS CMASS galaxies from kinematic and thermal Sunyaev-Zel’dovich measurements

"In the Baryon Oscillation Spectroscopic Survey, we have constraints on the gas thermodynamics of CMASS galaxies, "We present constraints on the gas thermodynamics of CMASS galaxies in the Baryon Oscillation Spectroscopic Survey, using new measurements of the kSZ and tSZ values obtained in a companion paper. " We estimate the consequences of including baryons in the simulation of poor-lensing galaxy cross-corcorcorcorrelation measurements using the most consistent fit density profile from the kSZ study. Our analysis helps to narrow the gap between the original theoretical model and the poor-lensing galaxy cross-corcorrelation results in arXiv:1611. 08606 by half, but does not completely reconcile it. We find that when comparing the kSZ and tSZ measurements to cosmological simulations, they underestimate the CGM pressure and to a lesser extent the CGM density at higher radii. "This means that the electricity delivered by feedback mechanisms in the simulations we compared against does not sufficiently heat the gas at these radii. ".

Source link: https://www.osti.gov/biblio/1771976


Atacama Cosmology Telescope: Combined kinematic and thermal Sunyaev-Zel’dovich measurements from BOSS CMASS and LOWZ halos

"The scattering of cosmic microwave background photons off the free-electron gas in galaxies and clusters of visible imprints on high-resolution CMB maps shows detectable fingerprints, including thermographic and kinematic Sunyaev-Zelu2019dovich effects": the thermal and kinematic effects of the sunyaev-Zelu2019dovich effects. To determine the atmosphere associated with these galaxy groups, we use combined microwave maps from Atacama Cosmology Telescope DR5 and Planck, as well as the CMASS and LOWZ galaxy catalogs from the Baryon Oscillation Spectroscopic Survey to examine the gas associated with these galaxy groups. This directly translates into a count of the electron number density profile, and hence the gas density profile. Despite the limited signal to noise, the survey indicates with utmost certainty that the gas density profile is more extended than the dark matter density profile for any reasonable baryon abundance. We simultaneously measure the tSZ value, i. e. , the electron thermal pressure profile of the same CMASS objects, and reject the no-tSZ hypothesis at 10 u03c3. We use tSZ and kSZ measurements to determine the electron temperature in several aperture bins and find it similar to virial temperature in several aperture bins. We present the appropriate LOWZ results in this paper, ruled out a null kSZ signal at 2. 9 u03c3 and leaving their interpretation to future research. This paper and the companion paper show that new CMB experiments can detect and analyze gas profiles in low mass halos and at high redshifts, which are the most sensitive to galaxy formation feedback and the most difficult to determine in any other way.

Source link: https://www.osti.gov/biblio/1771977


The Atacama Cosmology Telescope: a CMB lensing mass map over 2100 square degrees of sky and its cross-correlation with BOSS-CMASS galaxies

"We develop cosmic microwave background lensing mass maps in this series using data from the 2014 and 2015 seasons of observations with the Atacama Cosmology Telescope. With an amplitude of A = 1. 02 u00b1 0. 10 relative to the Planck best-fitting Lambda cold matter cosmological model with fiducial linear galaxy bias, the cross-spectrum between the cleaned lens map and the BOSS CMASS galaxy sample has been found at 10°c3 significance, with an amplitude of A = 1. 02 u00b1 0. 10 relative to the Planck best-fitting Lambda cold matter cosmological model with fidut cosmological model with fidu amplitude of 0. 02 u00b1 0. 10 u00b1 0. 10 cosmological telescope with fidut cosmological model with fidu cosmological model with fidu cosmological model with fidufu00b1 0. 10 bin cosmological model with fidu cosmological model with fidu a u00b1 0. 10 u00b1 0. 10 a u00b1 0. 10 u00b1 0. 10u00b1 u00b1 0. 10 0 u00b1 0. 10.

Source link: https://www.osti.gov/biblio/1762204


Efficient cosmological analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure

"The resiliency of the cosmological results allows us to accurately estimate the predictions for cosmological observables by Taylor"'s rise to a low order of dependence on cosmological parameters around a reference cosmology. " We investigate the BOSS DR12 results by scanning across all the BOT cosmological parameters with large neutrinos by applying this result to the Effective Field Theory of Large-Scale Structure's redshift-loop galaxy power spectrum.

Source link: https://www.osti.gov/biblio/1656607


The cosmological analysis of the SDSS/BOSS data from the Effective Field Theory of Large-Scale Structure

"The Effective Field Theory of Large-Scale Structure is a model that allows us to predict clustering of Cosmological Large-Scale Structures in the mildly nonlinear regime in a more accurate and reliable way. " We perform the analysis for the cosmological parameters of the DR12 BOSS results in this paper, after proving our procedure against several sets of numerical simulations. H 0 =68. 5 m/ at 68% confidence level, 0 m=0. 309 m;>13th m>3x1 vs. 3. 2 u00b1 2. 2 km/ to approximately 13%, 3. 2 percent, and 3. 2 percent respectively, at one-loop power spectrum multipoles, ensuring ln =3. 22 / 2. 2 km/ to about 68%. "If we then include a CMB before the sound horizon, the error bar on H 0 is reduced to 1. 6%. ".

Source link: https://www.osti.gov/biblio/1638213


The mass–size relation of luminous red galaxies from BOSS and DECaLS

"We use the DECaLS DR3 survey photometry matched to the SDSS-III/BOSS DR12 spectroscopic catalogue to investigate the morphology and stellar mass-size relationship of luminous red galaxies within the CMASS and LOWZ galaxy samples in the redshift range 0. 2 - 0. 7. The overwhelming majority of both samples are of early-type galaxies with De Vaucouleurs profiles, while only less than 20% are late-type exponentials. We are able to explore the high-mass component of the sale by cross-matching the photometric characteristics of the early-type population with the Portsmouth stellar mass catalogue, obtaining a large number of 322994 galaxies over 4380 deg 2. These early-type galaxies have no change within the BOSS redshift range, but when combined with z 0. 1 SDSS measurements at the high-mass end, a barely decreasing redshift trend is found.

Source link: https://www.osti.gov/biblio/1658351


A Detection of the Baryon Acoustic Oscillation features in the SDSS BOSS DR12 Galaxy Bispectrum

"We present the first high-value detection of the Baryon Acoustic Oscillations feature in the galaxy bispectrum of the twelfth data collection of the Baryon Oscillation Spectroscopic Survey CMASS sample," the Baryon Acoustic Oscillation Spectroscopic Survey CMASS sample's galaxy bispectrum. The volume weighted averages of those two samples were determined, along with the scale dilation coefficient, u03b1, using the power spectrum, bispectrum, and both for DR12, plus 2048 MultiDark-PATCHY mocks in the North and South Galactic Caps.

Source link: https://www.osti.gov/biblio/1540622


Constraining the baryon-dark matter relative velocity with the large-scale 3-point correlation function of the SDSS BOSS DR12 CMASS galaxies

"We're looking for a galaxy clustering bias due to a shift in galaxy number associated with the baryon-dark matter relative velocity derived from recombination-era physics. " Our estimate of relative velocity bias shows no more than 3% rms in the distance scale inferred from the BAO's 2-point clustering, less than the 1% statistical error of this measurement. ".

Source link: https://www.osti.gov/biblio/1324263


The Clustering of Luminous Red Galaxies at z ~ 0.7 from EBOSS and BOSS Data

"We present the first scientific findings from the extended Baryon Oscillation Spectroscopic Survey's luminous red galaxy sample as well as the high-redshift galaxies of the previous BOSS sample. " A scattered degree of luminosity at a fixed halo mass, of 0. 19 dex, according to the galaxy's bias. 0̆3c3_logL is consistent with observations across the full redshift range that these samples cover, despite clustering of massive galaxies from BOSS CMASS, BOSS LOWZ, and SDSS.

Source link: https://www.osti.gov/biblio/1511014

* 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