Is the cold spot responsible for the CMB North-South asymmetry?

被引：16

作者：

Bernui, Armando ^{[1
,2
]}

机构：

[1] Inst Nacl Pesquisas Espaciais, Div Astrofis, BR-12227010 Sao Jose Dos Campos, SP, Brazil

[2] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 12期

关键词：

MICROWAVE-ANISOTROPY-PROBE; NON-GAUSSIANITY; POWER ASYMMETRY; ANOMALIES; SKY; MAPS; ALIGNMENT; ISOTROPY;

D O I：

10.1103/PhysRevD.80.123010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Several intriguing phenomena, unlikely within the standard inflationary cosmology, were reported in the cosmic microwave background (CMB) data from the Wilkinson Microwave Anisotropy Probe and appear to be uncorrelated. Two of these phenomena, termed CMB anomalies, are representative of their disparate nature: the North-South asymmetry in the CMB angular-correlation strength, inconsistent with an isotropic universe, and the cold spot, producing a significant deviation from Gaussianity. We find a correlation between them, at medium angular scales (l=11-20): we show that a successive diminution of the cold spot (absolute value) temperature implies a monotonic decrease of the North-South asymmetry power, and moreover we find that the cold spot supplies 60% of such power.

引用

页数：5

共 50 条

[41] Chaotic behavior of the north-south asymmetry of sunspots?
Watari, S
SOLAR PHYSICS, 1996, 163 (02) : 259 - 266
[42] On The Question of North-South Asymmetry of Solar Activity
Kraminin, A. P.
Mikhalina, F. A.
GEOMAGNETISM AND AERONOMY, 2019, 59 (08) : 1096 - 1098
[43] North-south asymmetry in solar activity and Solar Cycle prediction, V: prediction for the north-south asymmetry in the amplitude of Solar Cycle 25
Javaraiah, J.
ASTROPHYSICS AND SPACE SCIENCE, 2021, 366 (01)
[44] REGULARITY OF THE NORTH-SOUTH ASYMMETRY OF SOLAR ACTIVITY: REVISITED
Zhang, J.
Feng, W.
ASTRONOMICAL JOURNAL, 2015, 150 (03):
[45] North-south asymmetry in solar, interplanetary, and geomagnetic indices
El-Borie, M. A.
El-Abshehy, M.
Talaat, S.
Abou Taleb, W. M.
ASTROPHYSICS, 2012, 55 (01) : 127 - 139
[46] Reconstruction of the North-South Solar Asymmetry with a Kuramoto Model
Blanter, E.
Le Mouel, J. -L.
Shnirman, M.
Courtillot, V.
SOLAR PHYSICS, 2017, 292 (04)
[47] GRAND MINIMA AND NORTH-SOUTH ASYMMETRY OF SOLAR ACTIVITY
Olemskoy, S. V.
Kitchatinov, L. L.
ASTROPHYSICAL JOURNAL, 2013, 777 (01):
[48] The north-south asymmetry of solar activity at high latitudes
Li, K. J.
Gao, P. X.
Zhan, L. S.
Shi, X. J.
Zhu, W. W.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2009, 394 (01) : 231 - 238
[49] PERIODICITIES IN THE NORTH-SOUTH ASYMMETRY OF SOLAR-ACTIVITY
VIZOSO, G
BALLESTER, JL
SOLAR PHYSICS, 1989, 119 (02) : 411 - 414
[50] The Latitude Distributions of Sunspots and Its North-South Asymmetry
Badalyan, O. G.
ASTRONOMY REPORTS, 2011, 55 (10) : 928 - 942

← 1 2 3 4 5 →