Primordial Non-Gaussianity in the Cosmic Microwave Background

Table 2

Summary of constraints on local non-Gaussianity.

Year	Data	Method	𝑓^localNL±2𝜎 error
2002	COBE	Bispectrum sub-optimal	|𝑓NL|<1500	Komatsu et al. [184]
2003	MAXIMA	Bispectrum sub-optimal	|𝑓NL|<1900	Santos et al. [185]
2003	WMAP 1-year	Bispectrum sub-optimal	39.5±97.5	Komatsu et al. [23]
2004	VSA	Bispectrum sub-optimal	𝑓NL<5400	Smith et al. [186]
2005	WMAP 1-year	Bispectrum sub-optimal-v1	47±74	Creminelli et al. [25]
2006	WMAP 3-year	Bispectrum sub-optimal	30±84	Spergel et al. [24]
2006	WMAP 3-year	Bispectrum sub-optimal-v1	32±68	Creminelli et al. [26]
2007	WMAP 3-year	Bispectrum near-optimal	87±62	Yadav and Wandelt [28]
2007	Boomerang	Minkowski Functionals	110±910	de Troia et al. [187]
2008	WMAP 3-year	Minkowski Functionals	10.5±80.5	Hikage et al. [188]
2008	WMAP 5-year	Bispectrum near-optimal	51±60	Komatsu et al. [48]
2008	ARCHEOPS	Minkowski Functionals	70^1075−950	Curto et al. 2008 [189]
2009	WMAP 3-year	Bispectrum optimal	58±46	Smith et al. [122]
2009	WMAP 5-year	Bispectrum optimal	38±42	Smith et al. [122]
2009	WMAP 5-year	Spherical Mexican hat wavelet	31±49	Curto, et al. [190]
2009	BOOMERanG	Minkowski Functionals	−315±705	P. Natoli et al. [191]
2009	WMAP 5-year	Skewness power spectrum	11±47.4	Smidt, et al. [192]
2010	WMAP 7-year	Bispectrum optimal	32±42	Komatsu et al. [123]