CMB spectral distortions from black holes formed by vacuum bubbles

Heling Deng, Alexander Vilenkin, Masaki Yamada

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Vacuum bubbles may nucleate and expand during the cosmic inflation. When inflation ends, the bubbles run into the ambient plasma, producing strong shocks followed by underdensity waves, which propagate outwards. The bubbles themselves eventually form black holes with a wide distribution of masses. It has been recently suggested that such black holes may account for LIGO observations and may provide seeds for supermassive black holes observed at galactic centers. They may also provide a significant part or even the whole of the dark matter. We estimate the spectral μ-distortion of the CMB induced by expanding shocks and underdensities. The predicted distortions averaged over the sky are well below the current bounds, but localized peaks due to the largest black holes impose constraints on the model parameters.

本文言語English
論文番号059
ジャーナルJournal of Cosmology and Astroparticle Physics
2018
7
DOI
出版ステータスPublished - 2018 7 26
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

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