Optical inverse-Compton emission from clusters of galaxies

Abstract

Shocks around clusters of galaxies accelerate electrons which upscatter the Cosmic Microwave Background photons to higher-energies. We use an analytical model to calculate this inverse Compton (IC) emission, taking into account the effects of additional energy losses via synchrotron and Coulomb scattering. We find that the surface brightness of the optical IC emission increases with redshift and halo mass. The IC emission surface brightness, 32--34~mag~arcsec${}^{-2}$, for massive clusters is potentially detectable by the newly developed Dragonfly Telephoto Array.

11 pages, 7 figures, 1 table, accepted for publication in MNRAS

References in corpus (26)

• Cosmic rays in galaxy clusters and their non-thermal emission
• Turbulence and Magnetic Fields in the Large Scale Structure of the Universe
• Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array
• Non-Thermal Electron Acceleration in Low Mach Number Collisionless Shocks. I. Particle Energy Spectra and Acceleration Mechanism
• First results from the Dragonfly Telephoto Array: the apparent lack of a stellar halo in the massive spiral galaxy M101
• Characterizing Diffused Stellar Light in simulated galaxy clusters
• Non-Thermal Electron Acceleration in Low Mach Number Collisionless Shocks. II. Firehose-Mediated Fermi Acceleration and its Dependence on Pre-Shock Conditions
• Mass Accretion and its Effects on the Self-Similarity of Gas Profiles in the Outskirts of Galaxy Clusters
• Intra-Cluster Light at the Frontier: Abell 2744
• Cross-correlation Weak Lensing of SDSS Galaxy Clusters III: Mass-to-light Ratios
• The Matryoshka Run (II): Time Dependent Turbulence Statistics, Stochastic Particle Acceleration and Microphysics Impact in a Massive Galaxy Cluster
• Intra Cluster Light properties in the CLASH-VLT cluster MACS J1206.2-0847
• On the Origin of Intracluster Light in Massive Galaxy Clusters
• Shock finding on a moving-mesh: I. Shock statistics in non-radiative cosmological simulations
• Nonthermal phenomena in clusters of galaxies
• Constraints on diffuse gamma-ray emission from structure formation processes in the Coma cluster
• Shock Waves and Cosmic Ray Acceleration in the Outskirts of Galaxy Clusters
• The XXL Survey V: Detection of the Sunyaev-Zel'dovich effect of the Redshift 1.9 Galaxy Cluster XLSSU J021744.1-034536 with CARMA
• Chandra deep observation of XDCP J0044.0-2033, a massive galaxy cluster at z>1.5
• Nonthermal radiation mechanisms
• A NuSTAR observation of the center of the Coma Cluster
• N-body + Magnetohydrodynamical Simulations of Merging Clusters of Galaxies: Characteristic Magnetic Field Structures Generated by Bulk Flow Motion
• Investigating the hard X-ray emission from the hottest Abell cluster A2163 with Suzaku
• A Simple Physical Model for the Gas Distribution in Galaxy Clusters
• Inverse-Compton Emission from Clusters of Galaxies: Predictions for ASTRO-H
• Optical and X-ray profiles in the REXCESS sample of galaxy clusters

Cited by in corpus (7)

• Turbulent Cosmic Ray Reacceleration at Radio Relics and Halos in Clusters of Galaxies
• Detection of virial shocks in stacked Fermi-LAT clusters
• X-ray to gamma-ray virial shock signal from the Coma cluster
• Turbulent Cosmic-Ray Reacceleration and the Curved Radio Spectrum of the Radio Relic in the Sausage Cluster
• Coincident SZ and $\gamma$-ray signals from cluster virial shocks
• Future Prospects: Deep Imaging of Galaxy Outskirts using Telescopes Large and Small
• Search for Nonthermal X-ray Emission in the Ophiuchus Galaxy Cluster