Continuing Planck Surveyor LPAC Support

普朗克勘测者卫星定于2008年发射。它将创建30-850 GHz的全天图，以便观察星系同步辐射和低频自由辐射，高频星系尘埃发射，以及这些物理过程和其他来源(如Sunyaev-Zeldovich效应)的银河系外来源的辐射。首先，它将在强度和偏振两个方面观测宇宙微波背景(CMB)，并允许我们重建原始等离子体的状态，从而测量潜在的宇宙学参数。帝国集团伦敦普朗克分析中心(LPAC)的任务主要是对普朗克/HFI进行几何校准：我们通过对行星和更远的点源的原位测量来确定焦平面的布局和望远镜光束的形状。我们还参与了几个负责创建中间和最终数据产品的普朗克工作组：将与赫歇尔和其他仪器共享的各种点源目录、CMB和前景地图以及CMB功率谱。英国赫歇尔-普朗克监督委员会(HPOC)已于2006年9月审查并批准了这一支持案例。随后与太平洋合作与合作委员会/科学技术合作委员会进行了讨论，以商定方案细节。

The Planck surveyor satellite is due for launch in 2008. It will create all-sky maps over 30-850GHz, allowing observation of galactic synchrotron and free-free emission at low frequencies, galactic dust emission at high frequencies, and emission from extragalactic sources due to these physical processes as well as other sources such as the Sunyaev-Zeldovich effect. Primarily, it will observe the cosmic microwave background (CMB) in both intensity and polarization and allow us to reconstruct the state of the primordial plasma, and thereby measure the underlying cosmological parameters. The task of the Imperial group, the London Planck Analysis Centre (LPAC) is primarily the geometric calibration of Planck/HFI: we determine the layout of the focal plane and the shape of the telescope beam using in situ measurements of planets and more distant point sources. We are also involved in several of the Planck Working Groups responsible for creating the intermediate and final data products: the various point-source catalogues to be shared with Herschel and other instruments, the CMB and foreground maps, and the CMB power spectrum. The case for support has already been reviewed and approved by the UK Herschel-Planck Oversight Committee (HPOC) in September 2006. Subsequent discussions with PPARC/STFC have been held to agree programme details.