Sunyaev-Zel'dovich anisotropy due to Primordial black holes

Abstract

We investigate the Sunyaev-Zel'dovich (SZ) effect caused by primordial black holes (PBHs) on the cosmic microwave background (CMB) temperature fluctuations. The gas accreting on a PBH heats up by the release of the gravitational energy. As a result, the heated gas in the vicinity of the PBH emits the UV and X-ray photons. These photons can ionize and heat the intergalactic medium (IGM) around the PBH. Assuming the simple model of these emitting photons, we compute the profiles of the IGM ionization fraction and temperature around a PBH. Using these profiles, we evaluate the Compton $y$-parameter created by the IGM gas around a PBH. Finally, we estimate the CMB temperature angular power spectrum due to the PBH SZ effect in our model. We show that the SZ temperature anisotropy due to the PBHs has the flat angular power spectrum on small scale, $l\le 2000$ and could dominate the primordial temperature spectrum on smaller scales than the Silk scale. This flat spectrum extends to the scale of the ionized region by the PBH emission. We also discuss the impact of the small-scale CMB measurement on the PBH abundance based on our results.

arXiv comment8 pages, 4 figures, submitted to PRD

References in corpus (26)

• GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• Did LIGO detect dark matter?
• New cosmological constraints on primordial black holes
• Analytic model for galaxy and dark matter clustering
• Primordial Black Holes as Dark Matter
• Properties of the Binary Black Hole Merger GW150914
• Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
• Primordial Black Hole Scenario for the Gravitational-Wave Event GW150914
• The first gravitational-wave source from the isolated evolution of two 40-100 Msun stars
• The clustering of massive Primordial Black Holes as Dark Matter: measuring their mass distribution with Advanced LIGO
• Cosmic microwave background limits on accreting primordial black holes
• CMB bounds on disk-accreting massive Primordial Black Holes
• Limits on stellar-mass compact objects as dark matter from gravitational lensing of type Ia supernovae
• Sunyaev - Zel'dovich fluctuations from spatial correlations between clusters of galaxies
• 21cm Limits on Decaying Dark Matter and Primordial Black Holes
• Planck Constraint on Relic Primordial Black Holes
• Reheating during Hierarchical Clustering in the Universe Dominated by the Cold Dark Matter
• Constraints on Primordial Black Holes by Distortions of Cosmic Microwave Background
• Signatures of primordial black holes as seeds of supermassive black holes
• Spectra and time variability of galactic black-hole X-ray sources in the low/hard state
• The effect of primordial black holes on 21 cm fluctuations
• Maps of the Southern Millimeter-wave Sky from Combined 2500 deg${}^2$ SPT-SZ and Planck Temperature Data
• Cosmological implications of Primordial Black Holes
• Small-scale structure and 21cm fluctuations by primordial black holes

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