标题： COBE-DMR两年各向异性图中的三点相关性 显示英文标题

标题： Three-Point Correlations in the COBE-DMR Two-Year Anisotropy Maps

摘要： 我们计算了COBE微波辐射计(DMR)两年天空地图的三点温度相关函数，以搜索非高斯温度涨落的证据。我们检测到我们的天空中的三点关联，其信噪比明显高于第一年数据。然而，信号的幅度与从高斯涨落预期的宇宙方差水平一致，即使从数据中过滤掉了直到l = 9的低阶多极矩。这些结果并没有强烈限制大多数现有的结构形成模型，但大角度尺度上不存在固有的三点关联对于这些模型来说是一个重要的一致性检验。 显示英文摘要

摘要： We compute the three-point temperature correlation function of the COBE Differential Microwave Radiometer (DMR) two-year sky maps to search for evidence of non-Gaussian temperature fluctuations. We detect three-point correlations in our sky with a substantially higher signal-to-noise ratio than from the first year data. However, the magnitude of the signal is consistent with the level of cosmic variance expected from Gaussian fluctuations, even when the low order multipole moments, up to l = 9, are filtered from the data. These results do not strongly constrain most existing models of structure formation, but the absence of intrinsic three-point correlations on large angular scales is an important consistency test for such models.