From: Stochastic backgrounds of relic gravitons: a theoretical appraisal
Experiments | Years | Pivot frequencies | Upper limits on BB |
---|---|---|---|
2000-2003 | 26-36 GHz | (2π) ≤ 50(μK)2 | |
Boomerang [168] | 2003 | 145 GHz | /(2π) ≤ 8.6(μK)2 |
2003 | 140 GHz | /(2π) ≤ 112.3(μK)2 | |
2007 | 100/150 GHz | /(2π) ≤ 10(μK)2 | |
2002-2005 | 26-36 GHz | /(2π) ≤ 3.76(μK)2 | |
2004-2005 | 35-46/84-100 GHz | /(2π) ≤ 4.8(μK)2 | |
2001-2006 | 23-94 GHz | /(2π) ≤ 0.5(μK)2 |