Planck Public Data Release 1 External Data

This page contains links to all-sky maps of foreground emission and to the WMAP 9 year products. In the frequency range covered by Planck (30-857 GHz), Galactic and extra-galactic sources contribute to the observed signal via several mechanisms, most notably free-free (thermal bremsstrahlung) emission, synchrotron radiation, and thermal emission from cold sources. In many regions of the sky signal from foreground sources can dominate over that of the CMB. These maps show the distribution of structures primarily associated with the Interstellar Medium in our Milky Way Galaxy as viewed in a number of surveys, including those of Balmer line emission of ionized hydrogen, 21 cm emission from neutral hydrogen, CO tracer of dense molecular gas, and the thermal signature of the cold dust that is the significant feature at submillimeter wavelengths. We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis (LAMBDA), part of the High Energy Astrophysics Science Archive Center (HEASARC). HEASARC/LAMBDA is a service of the Astrophysics Science Division at the NASA Goddard Space Flight Center. This dataset or service is made available by the Infrared Science Archive (IRSA) at IPAC, which is operated by the California Institute of Technology under contract with the National Aeronautics and Space Administration.

本页面提供了前景辐射全天图以及威尔金森微波各向异性探测器 (WMAP) 九年观测产物的相关链接。
在普朗克望远镜 (Planck) 覆盖的30~857吉赫 (GHz) 频段内，银河系及河外源通过多种机制对观测信号产生贡献，其中尤以自由-自由辐射 (free-free emission，又称热轫致辐射 (thermal bremsstrahlung))、同步加速辐射 (synchrotron radiation) 以及冷源热辐射最为显著。在诸多天区中，前景源的辐射信号强度甚至会超过宇宙微波背景 (CMB)。
本批全天图展示了与银河系星际介质 (Interstellar Medium) 密切相关的结构分布，其数据源自多项巡天观测：涵盖电离氢的巴耳末线辐射 (Balmer line emission)、中性氢的21厘米辐射 (21 cm emission)、示踪致密分子气体的一氧化碳 (CO) 观测，以及体现亚毫米波波段 (submillimeter wavelengths) 显著特征的冷尘埃热辐射特征观测。
本研究感谢使用微波背景数据分析遗留档案库 (LAMBDA)，该库隶属于高能天体物理科学档案中心 (HEASARC)。HEASARC/LAMBDA是美国国家航空航天局 (NASA) 戈达德太空飞行中心天体物理科学部运营的服务。本数据集及相关服务由加州理工学院受美国国家航空航天局委托运营的IPAC下属红外科学档案库 (IRSA) 提供支持。

搜集汇总

背景与挑战

背景概述

Planck Public Data Release 1 External Data是由Planck团队发布的全天空前景发射图和WMAP 9年产品数据集，覆盖30-857 GHz频率范围，重点关注银河系和河外源的多种发射机制，包括自由-自由发射、同步辐射和冷源热发射等。数据集展示了银河系星际介质结构的分布，如电离氢的巴尔末线发射、中性氢的21厘米发射等，对研究宇宙微波背景和星际介质具有重要意义。