Extended self-similarity of the small-scale cosmic microwave background anisotropy

A. Bershadskii, K. R. Sreenivasan

Research output: Contribution to journalArticle

Abstract

The extended self-similarity (ESS) of cosmic microwave background (CMB) radiation has been studied using recent data obtained by the space-craft based Wilkinson Microwave Anisotropy Probe. Using the ESS and the high angular scale resolution (arcminutes) of the data it is shown that the CMB temperature space increments exhibit considerable and systematic declination from Gaussianity for high order moments at the small angular scales. Moreover, the CMB space increment ESS exponents have remarkably close values to the ESS exponents observed in turbulence (in magnetohydrodynamic turbulence).

Original languageEnglish (US)
Pages (from-to)21-23
Number of pages3
JournalPhysics Letters A
Volume319
Issue number1-2
DOIs
StatePublished - Dec 1 2003

Fingerprint

microwaves
anisotropy
space temperature
exponents
magnetohydrodynamic turbulence
Microwave Anisotropy Probe
cosmic microwave background radiation
declination
vehicles
turbulence
moments

Keywords

  • Cosmic microwave background
  • Non-Gaussian multiscaling
  • Primordial turbulence

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Extended self-similarity of the small-scale cosmic microwave background anisotropy. / Bershadskii, A.; Sreenivasan, K. R.

In: Physics Letters A, Vol. 319, No. 1-2, 01.12.2003, p. 21-23.

Research output: Contribution to journalArticle

@article{a5024fb007274492b7f345699fd02ce4,
title = "Extended self-similarity of the small-scale cosmic microwave background anisotropy",
abstract = "The extended self-similarity (ESS) of cosmic microwave background (CMB) radiation has been studied using recent data obtained by the space-craft based Wilkinson Microwave Anisotropy Probe. Using the ESS and the high angular scale resolution (arcminutes) of the data it is shown that the CMB temperature space increments exhibit considerable and systematic declination from Gaussianity for high order moments at the small angular scales. Moreover, the CMB space increment ESS exponents have remarkably close values to the ESS exponents observed in turbulence (in magnetohydrodynamic turbulence).",
keywords = "Cosmic microwave background, Non-Gaussian multiscaling, Primordial turbulence",
author = "A. Bershadskii and Sreenivasan, {K. R.}",
year = "2003",
month = "12",
day = "1",
doi = "10.1016/j.physleta.2003.09.079",
language = "English (US)",
volume = "319",
pages = "21--23",
journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",
issn = "0375-9601",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Extended self-similarity of the small-scale cosmic microwave background anisotropy

AU - Bershadskii, A.

AU - Sreenivasan, K. R.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - The extended self-similarity (ESS) of cosmic microwave background (CMB) radiation has been studied using recent data obtained by the space-craft based Wilkinson Microwave Anisotropy Probe. Using the ESS and the high angular scale resolution (arcminutes) of the data it is shown that the CMB temperature space increments exhibit considerable and systematic declination from Gaussianity for high order moments at the small angular scales. Moreover, the CMB space increment ESS exponents have remarkably close values to the ESS exponents observed in turbulence (in magnetohydrodynamic turbulence).

AB - The extended self-similarity (ESS) of cosmic microwave background (CMB) radiation has been studied using recent data obtained by the space-craft based Wilkinson Microwave Anisotropy Probe. Using the ESS and the high angular scale resolution (arcminutes) of the data it is shown that the CMB temperature space increments exhibit considerable and systematic declination from Gaussianity for high order moments at the small angular scales. Moreover, the CMB space increment ESS exponents have remarkably close values to the ESS exponents observed in turbulence (in magnetohydrodynamic turbulence).

KW - Cosmic microwave background

KW - Non-Gaussian multiscaling

KW - Primordial turbulence

UR - http://www.scopus.com/inward/record.url?scp=1042278969&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1042278969&partnerID=8YFLogxK

U2 - 10.1016/j.physleta.2003.09.079

DO - 10.1016/j.physleta.2003.09.079

M3 - Article

AN - SCOPUS:1042278969

VL - 319

SP - 21

EP - 23

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

SN - 0375-9601

IS - 1-2

ER -