The correlation of extragalactic $\gamma$-rays with cosmic matter density distributions from weak-gravitational lensing

Abstract

The extragalactic $\gamma$-ray background (EGB) arises from the accumulation of $\gamma$-ray emissions from resolved and unresolved extragalactic sources as well as diffuse processes. It is important to study the statistical properties of the EGB in the context of cosmological structure formation. Known astrophysical $\gamma$-ray sources such as blazars, star-forming galaxies, and radio galaxies are expected to trace the underlying cosmic matter density distribution. We explore the correlation of the EGB from Fermi-LAT data with the large-scale matter density distribution from the Subaru Hyper Suprime-Cam (HSC) SSP survey. We reconstruct an unbiased surface matter density distribution $\kappa$ at $z<1$ by applying weak-gravitational lensing analysis to the first-year HSC data. We then calculate the $\gamma -\kappa$ cross-correlation. Our measurements are consistent with a null detection, but a weak correlation is found at angular scales of 30-60 arcmin, especially when distant source galaxies at $z>1$ are used for the lensing $\kappa$ reconstruction. The large-scale correlation suggests strong clustering of high-redshift $\gamma$-ray sources such as blazars. However, the inferred bias factor of $4-5$ is larger by about a factor of two than results from other clustering analyses. The final HSC data covering 1,400 squared degrees will play an essential role to determine accurately the blazar bias at $z>0.5$.

arXiv comment17 pages, 8 figures, 4 tables, accepted for publication in Physical Review D

References in corpus (54)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• Large scale bias and the peak background split
• Weak Gravitational Lensing
• Weak Gravitational Lensing of the CMB
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV
• Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
• EGRET Observations of the Extragalactic Gamma Ray Emission
• Shapes and Shears, Stars and Smears: Optimal Measurements for Weak Lensing
• Semi-analytic modeling of the EBL and consequences for extragalactic gamma-ray spectra
• On The Origin Of The Gamma Rays From The Galactic Center
• Dark Matter Constraints from Observations of 25 Milky Way Satellite Galaxies with the Fermi Large Area Telescope
• Roma-BZCAT: A multifrequency catalogue of Blazars
• Shear calibration biases in weak lensing surveys
• GeV Observations of Star-forming Galaxies with \textit{Fermi} LAT
• Detection of (dark) matter concentrations via weak gravitational lensing
• Photometric Redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1
• The radio luminosity function from the low-frequency 3CRR, 6CE & 7CRS complete samples
• Towards a Concordant Model of Halo Occupation Statistics
• The first-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
• The flattening of the concentration-mass relation towards low halo masses and its implications for the annihilation signal boost
• The Fermi-LAT high-latitude Survey: Source Count Distributions and the Origin of the Extragalactic Diffuse Background
• The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation
• Mid- and Far-infrared Luminosity Functions and Galaxy Evolution from Multiwavelength Spitzer Observations up to z~2.5
• GREAT3 results I: systematic errors in shear estimation and the impact of real galaxy morphology
• Contribution of the Gamma-ray Loud Radio Galaxies Core Emissions to the Cosmic MeV and GeV Gamma-Ray Background Radiation
• The Starburst Contribution to the Extra-Galactic Gamma-Ray Background
• Full-sky Gravitational Lensing Simulation for Large-area Galaxy Surveys and Cosmic Microwave Background Experiments
• The XMM-Newton Wide field survey in the COSMOS field: redshift evolution of AGN bias and subdominant role of mergers in triggering moderate luminosity AGN at redshift up to 2.2
• The nature of the Diffuse Gamma-Ray Background
• Diffuse $\gamma$-ray emission from misaligned active galactic nuclei
• The Blazar Sequence and the Cosmic Gamma-Ray Background Radiation in the Fermi Era
• A Relationship between Supermassive Black Hole Mass and the Total Gravitational Mass of the Host Galaxy
• Two- and three-dimensional wide-field weak lensing mass maps from the Hyper Suprime-Cam Subaru Strategic Program S16A data
• A novel approach in the WIMP quest: Cross-Correlation of Gamma-Ray Anisotropies and Cosmic Shear
• Cross-Correlation of Cosmic Shear and Extragalactic Gamma-ray Background: Constraints on the Dark Matter Annihilation Cross-Section
• Tomography of the Fermi-LAT gamma-ray diffuse extragalactic signal via cross-correlations with galaxy catalogs
• Statistical and Systematic Errors in Measurement of Weak-Lensing Minkowski Functionals: Application to Canada-France-Hawaii Lensing Survey
• Particle dark matter searches in the anisotropic sky
• Contribution from Star-Forming Galaxies to the Cosmic Gamma-Ray Background Radiation
• Tomographic-spectral approach for dark matter detection in the cross-correlation between cosmic shear and diffuse gamma-ray emission
• Models of the Contribution of Blazars to the Anisotropy of the Extragalactic Diffuse Gamma-ray Background
• Evidence of cross-correlation between the CMB lensing and the gamma-ray sky
• Cross-correlating the gamma-ray sky with catalogs of galaxy clusters
• Galaxy and Mass Assembly (GAMA): The evolution of bias in the radio source population to z ~ 1.5
• Power spectrum tomography of dark matter annihilation with local galaxy distribution
• Cross-correlation of weak lensing and gamma rays: implications for the nature of dark matter
• Cosmological constraints on dark matter annihilation and decay: Cross-correlation analysis of the extragalactic $\gamma$-ray background and cosmic shear
• Cross-Correlation of the Extragalactic Gamma-ray Background with Luminous Red Galaxies
• Tomographic imaging of the Fermi-LAT gamma-ray sky through cross-correlations: A wider and deeper look
• Planck Lensing and Cosmic Infrared Background Cross-Correlation with Fermi-LAT: Tracing Dark Matter Signals in the Gamma-Ray Background
• Clustering of gamma-ray selected 2LAC Fermi Blazars
• Linking X-ray AGN with dark matter halos: a model compatible with AGN luminosity function and large-scale clustering properties

Cited by in corpus (14)

• Probing heavy dark matter decays with multi-messenger astrophysical data
• Detection of cross-correlation between gravitational lensing and gamma rays
• Characterizing the local gamma-ray Universe via angular cross-correlations
• Bounds on WIMP dark matter from galaxy clusters at low redshift
• Measurement of redshift dependent cross correlation of HSC clusters and Fermi $\gamma$ rays
• Synergies across the spectrum for particle dark matter indirect detection: how HI intensity mapping meets gamma rays
• Impact of radio sources and cosmic infrared background on thermal Sunyaev-Zel'dovich - gravitational lensing cross correlation
• Got plenty of nothing: cosmic voids as a probe of particle dark matter
• Cross Correlation of the Extragalactic Gamma-ray Background with Thermal Sunyaev-Zel'dovich Effect in the Cosmic Microwave Background
• Constraints on dark matter and astrophysics from tomographic $\gamma$-ray cross-correlations
• High-Significance Detection of Correlation Between the Unresolved Gamma-Ray Background and the Large Scale Cosmic Structure
• KiDS-Legacy: WIMP dark matter constraints from the cross-correlation of weak lensing and Fermi-LAT gamma rays
• Dark Matter and Galaxy Cross-Correlations with the Cherenkov Telescope Array Observatory
• Wiener filtering and multi-tracer techniques for dark matter cross-correlations between gamma-ray emission and galaxy catalogs