Testing global isotropy of three-year Wilkinson Microwave Anisotropy Probe (WMAP) data: Temperature analysis

Journal Article · Fri Dec 15 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.123521· OSTI ID:20868191

Hajian, Amir; Souradeep, Tarun ^[1]

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1. Department of Physics, Jadwin Hall, Princeton University, PO Box 708, Princeton, New Jersey 08542 (United States) and Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, New Jersey 08544 (United States)

We examine statistical isotropy of large scale anisotropies of the Internal Linear Combination (ILC) map, based on 3 yr WMAP data. Our study reveals no significant deviation from statistical isotropy on large angular scales of the 3 yr ILC map. Comparing statistical isotropy of the 3 yr ILC map and 1 yr ILC map, we find a significant improvement in the 3 yr ILC map which can be due to the gain model, improved ILC map processing, and foreground minimization.

• OSTI ID: 20868191
• Journal Information: Physical Review. D, Particles Fields, Vol. 74, Issue 12; Other Information: DOI: 10.1103/PhysRevD.74.123521; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
COSMOLOGY
DATA PROCESSING
GAIN
ISOTROPY
MINIMIZATION
PROBES
RELICT RADIATION
TESTING