Giant rings in the cosmic microwave background sky

Ely D. Kovetz; Assaf Ben-David; Nissan Itzhaki

doi:10.1088/0004-637X/724/1/374

Giant rings in the cosmic microwave background sky

Ely D. Kovetz, Assaf Ben-David, Nissan Itzhaki

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

We find a unique direction in the cosmic microwave background sky around which giant rings have an anomalous mean temperature profile. This direction is in very close alignment with the afore measured anomalously large bulk flow direction. Using Monte Carlo simulations, we estimate the significance of the giant rings at the 3σ level and the alignment with the bulk flow at 2.5σ. We argue that a cosmic defect seeded by a pre-inflationary particle could explain the giant rings, the large bulk flow, and their alignment.

Original language	English
Pages (from-to)	374-378
Number of pages	5
Journal	Astrophysical Journal
Volume	724
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/724/1/374
State	Published - 20 Nov 2010
Externally published	Yes

Keywords

Cosmic background radiation
Early universe
Inflation
Large-scale structure of universe

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/724/1/374

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AU - Ben-David, Assaf

AU - Itzhaki, Nissan

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AB - We find a unique direction in the cosmic microwave background sky around which giant rings have an anomalous mean temperature profile. This direction is in very close alignment with the afore measured anomalously large bulk flow direction. Using Monte Carlo simulations, we estimate the significance of the giant rings at the 3σ level and the alignment with the bulk flow at 2.5σ. We argue that a cosmic defect seeded by a pre-inflationary particle could explain the giant rings, the large bulk flow, and their alignment.

KW - Cosmic background radiation

KW - Early universe

KW - Inflation

KW - Large-scale structure of universe

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Giant rings in the cosmic microwave background sky

Abstract

Keywords

ASJC Scopus subject areas

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