Lynds 1622偏振反常微波辐射的极限
A Limit on the Polarized Anomalous Microwave Emission of Lynds 1622
摘要：
林德1622号暗云是银河系中少数几个特定的地点之一，相对于观测到的自由和振动尘埃发射，微波发射明显过量。为了限制这种微波发射的模型，并更好地建立它可能对正在进行的和不久的将来的微波背景偏振实验的贡献，我们使用绿岸望远镜在9.65 Ghz向Lynds 1622搜索线性偏振。我们将88微开尔文的95.4%上限（在99.7置信度下为123微开尔文）放置在该源在1.3 FWHM光束上平均的总线性偏振上。相对于观测到的斯托克斯I的异常发射水平，这些限制对应于2.7%和3.5%的分数线偏振。
英文摘要：
The dark cloud Lynds 1622 is one of a few specific sites in the Galaxy where, relative to observed free-free and vibrational dust emission, there is a clear excess of microwave emission. In order to constrain models for this microwave emission, and to better establish the contribution which it might make to ongoing and near-future microwave background polarization experiments, we have used the Green Bank Telescope to search for linear polarization at 9.65 Ghz towards Lynds 1622. We place a 95.4% upper limit of 88 micro-Kelvin (123 micro-Kelvin at 99.7 confidence) on the total linear polarization of this source averaged over a 1'.3 FWHM beam. Relative to the observed level of anomalous emission in Stokes I these limits correspond to fractional linear polarizations of 2.7% and 3.5%.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
