output
19932026
Showing 2016 · astro-ph.COShow all

22 papers · 2 filters

astro-ph.CO2016★ 47 cited

Cross-correlating the gamma-ray sky with catalogs of galaxy clusters

Enzo Branchini, Stefano Camera, Alessandro Cuoco +4

We report the detection of a cross-correlation signal between {\it Fermi} Large Area Telescope diffuse gamma-ray maps and catalogs of clusters. In our analysis, we considered three…

astro-ph.CO2016★ 146 cited

Exploring Cosmic Origins with CORE: Inflation

CORE Collaboration, Fabio Finelli, Martin Bucher +129

We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a m…

astro-ph.CO2016★ 10 cited

Revisiting dark energy models using differential ages of galaxies

Nisha Rani, Deepak Jain, Shobhit Mahajan +2

In this work, we use a test based on the differential ages of galaxies for distinguishing the dark energy models. As proposed by Jimenez and Loeb, relative ages of galaxies can be…

astro-ph.CO2016★ 41 cited

Hiding neutrino mass in modified gravity cosmologies

Nicola Bellomo, Emilio Bellini, Bin Hu +3

Cosmological observables show a dependence with the neutrino mass, which is partially degenerate with parameters of extended models of gravity. We study and explore this degeneracy…

astro-ph.CO2016★ 18 cited

Robust predictions for an oscillatory bispectrum in Planck 2015 data from transient reductions in the speed of sound of the inflaton

Jesus Torrado, Bin Hu, Ana Achucarro

We update the search for features in the Cosmic Microwave Background (CMB) power spectrum due to transient reductions in the speed of sound, using Planck 2015 CMB temperature and p…

astro-ph.CO2016★ 48 cited

Revisiting Studies of the Statistical Property of a Strong Gravitational Lens System and Model-independent Constraint on the Curvature of the Universe

Jun-Qing Xia, Hai Yu, Guo-Jian Wang +4

In this paper we use a recently compiled data set, which comprises 118 galactic-scale strong gravitational lensing (SGL) systems to constrain the statistic property of SGL system,…

astro-ph.CO2016★ 60 cited

Cosmological neutrino simulations at extreme scale

J. D. Emberson, Hao-Ran Yu, Derek Inman +8

Constraining neutrino mass remains an elusive challenge in modern physics. Precision measurements are expected from several upcoming cosmological probes of large-scale structure. A…

astro-ph.CO2016★ 56 cited

Model-independent estimations for the curvature from standard candles and clocks

Zhengxiang Li, Guo-Jian Wang, Kai Liao +1

Model-independent estimations for the spatial curvature not only provide a test for the fundamental Copernican principle assumption, but also can effectively break the degeneracy b…

astro-ph.CO2016★ 34 cited

Measurement of the Cold Dark Matter-Neutrino Dipole in the TianNu Simulation

Derek Inman, Hao-Ran Yu, Hong-Ming Zhu +6

Measurements of neutrino mass in cosmological observations rely on two point statistics that are hindered by significant degeneracies with the optical depth and galaxy bias. The re…

astro-ph.CO2016★ 39 cited

Differential Neutrino Condensation onto Cosmic Structure

Hao-Ran Yu, J. D. Emberson, Derek Inman +12

Astrophysical techniques have pioneered the discovery of neutrino mass properties. Current cosmological observations give an upper bound on neutrino masses by attempting to disenta…

astro-ph.CO2016★ 24 cited

The unrelaxed dynamical structure of the galaxy cluster Abell 85

Heng Yu, Antonaldo Diaferio, Irene Agulli +2

For the first time, we explore the dynamics of the central region of a galaxy cluster within ~kpc from its center by combining optical and X-ray spectroscopy…

astro-ph.CO2016★ 95 cited

Measuring the speed of light with ultra-compact radio quasars

Shuo Cao, Marek Biesiada, John Jackson +3

In this paper, based on a 2.29 GHz VLBI all-sky survey of 613 milliarcsecond ultra-compact radio sources with , we describe a method of identifying the sub-sample w…

astro-ph.CO2016★ 6 cited

Thermal gravitational-wave background in the general pre-inflationary scenario

Kai Wang, Larissa Santos, Jun-Qing Xia +1

We investigate the primordial gravitational waves (PGWs) in the general scenario where the inflation is preceded by a pre-inflationary stage with the effective equation of state $w…

astro-ph.CO2016★ 354 cited

H0LiCOW I. Lenses in COSMOGRAIL's Wellspring: Program Overview

S. H. Suyu, V. Bonvin, F. Courbin +21

Strong gravitational lens systems with time delays between the multiple images allow measurements of time-delay distances, which are primarily sensitive to the Hubble constant that…

astro-ph.CO2016

Constraints on Cosmic Distance Duality Relation from Cosmological Observations

Meng-Zhen Lv, Jun-Qing Xia

In this paper, we use the model dependent method to revisit the constraint on the well-known cosmic distance duality relation (CDDR). By using the latest SNIa samples, such as Unio…

astro-ph.CO2016★ 68 cited

Test of the cosmic evolution using Gaussian processes

Ming-Jian Zhang, Jun-Qing Xia

Much focus was on the possible slowing down of cosmic acceleration under the dark energy parametrization. In the present paper, we investigate this subject using the Gaussian proce…

astro-ph.CO2016★ 83 cited

What are and diagnostics telling us in light of data?

Xiaogang Zheng, Xuheng Ding, Marek Biesiada +2

Two-point diagnostics and have been introduced as an interesting tool for testing the validity of the CDM model. Quite recently, Sahni, Shafieloo…

astro-ph.CO2016★ 52 cited

Limits on the power-law mass and luminosity density profiles of elliptical galaxies from gravitational lensing systems

Shuo Cao, Marek Biesiada, Meng Yao +1

We use 118 strong gravitational lenses observed by the SLACS, BELLS, LSD and SL2S surveys to constrain the total mass profile and the profile of luminosity density of stars (light-…

astro-ph.CO2016★ 22 cited

Searching for bulk motions in the ICM of massive, merging clusters with Chandra CCD data

Ang Liu, Heng Yu, Paolo Tozzi +1

We search for bulk motions in the intracluster medium (ICM) of massive clusters showing evidence of an ongoing or recent major merger with spatially resolved spectroscopy in {\sl C…

astro-ph.CO2016★ 69 cited

Constraints on non-flat cosmologies with massive neutrinos after Planck 2015

Yun Chen, Bharat Ratra, Marek Biesiada +2

We investigate two dark energy cosmological models (i.e., the CDM and CDM models) with massive neutrinos assuming two different neutrino mass hierarchies in both the spatiall…

astro-ph.CO2016★ 32 cited

Testing the gas mass density profile of galaxy clusters with distance duality relation

Shuo Cao, Marek Biesiada, Xiaogang Zheng +1

In this paper, assuming the validity of distance duality relation, , where and are the angular and the luminosity distance respective…

astro-ph.CO2016★ 50 cited

What do we know about cosmography

Ming-Jian Zhang, Hong Li, Jun-Qing Xia

In the present paper, we investigate the cosmographic problem using the bias-variance trade-off. We find that both the z-redshift and the -redshift can present a small b…