Planck 2013 结果。VIII. HFI 光度定标与成图
宇宙学与河外天体物理
2014-10-29 v2 天体物理仪器与方法
摘要
本文描述了对 HFI 清洗后的时序数据进行处理以生成光度定标地图的过程。HFI 在 100 至 857 GHz 的宽频率范围内观测天空。为了在如此大的范围内获得最佳定标精度，必须使用两种不同的光度定标方案。545 和 857 \GHz\ 数据是利用天王星和海王星的流量密度测量值，并与它们的大气发射模型进行比较来定标的。较低频率（低于 353 GHz）则是利用宇宙微波背景偶极子进行定标。这种各向异性的一个分量源于卫星在太阳系中的轨道运动，因此是随时间变化的。因此，光度定标与成图紧密相连，后者还解决了低频噪声去除问题。2013 年发布的 HFI 数据显示出 HFI 测辐射热计探测链存在表观增益变化的证据。通过比较同一配置下间隔一年以上进行的观测，识别出了这些变化。我们开发了一种有效的校正方法来限制其对定标的影响，并评估了其准确性。我们提出了几种用于估计光度定标精度的方法。我们区分了相对不确定性（从一个探测器到另一个探测器，或从一个频率到另一个频率）和绝对不确定性。在这两种情况下，我们发现这些不确定性在 100 至 857 GHz 范围内从几个 到几个百分点不等。我们描述了基于光度定标参数从 HFI 时间线生成地图的流水线，并详细说明了用于后验设定地图零电平的方案。我们还简要讨论了 HFI 与 Herschel 卫星上 SPIRE 仪器之间的交叉定标。最后，我们总结了 2013 年 Planck 数据发布中 HFI 地图集的基本特征。
引用
@article{arxiv.1303.5069,
title = {Planck 2013 results. VIII. HFI photometric calibration and mapmaking},
author = {Planck Collaboration and P. A. R. Ade and N. Aghanim and C. Armitage-Caplan and M. Arnaud and M. Ashdown and F. Atrio-Barandela and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and E. Battaner and K. Benabed and A. Benoît and A. Benoit-Lévy and J. -P. Bernard and M. Bersanelli and B. Bertincourt and P. Bielewicz and J. Bobin and J. J. Bock and J. R. Bond and J. Borrill and F. R. Bouchet and F. Boulanger and M. Bridges and M. Bucher and C. Burigana and J. -F. Cardoso and A. Catalano and A. Challinor and A. Chamballu and R. -R. Chary and X. Chen and L. -Y Chiang and H. C. Chiang and P. R. Christensen and S. Church and D. L. Clements and S. Colombi and L. P. L. Colombo and C. Combet and F. Couchot and A. Coulais and B. P. Crill and A. Curto and F. Cuttaia and L. Danese and R. D. Davies and P. de Bernardis and A. de Rosa and G. de Zotti and J. Delabrouille and J. -M. Delouis and F. -X. Désert and C. Dickinson and J. M. Diego and H. Dole and S. Donzelli and O. Doré and M. Douspis and X. Dupac and G. Efstathiou and T. A. Enßlin and H. K. Eriksen and C. Filliard and F. Finelli and O. Forni and M. Frailis and E. Franceschi and S. Galeotta and K. Ganga and M. Giard and G. Giardino and Y. Giraud-Héraud and J. González-Nuevo and K. M. Górski and S. Gratton and A. Gregorio and A. Gruppuso and F. K. Hansen and D. Hanson and D. Harrison and G. Helou and S. Henrot-Versillé and C. Hernández-Monteagudo and D. Herranz and S. R. Hildebrandt and E. Hivon and M. Hobson and W. A. Holmes and A. Hornstrup and W. Hovest and K. M. Huffenberger and T. R. Jaffe and A. H. Jaffe and W. C. Jones and M. Juvela and E. Keihänen and R. Keskitalo and T. S. Kisner and R. Kneissl and J. Knoche and L. Knox and M. Kunz and H. Kurki-Suonio and G. Lagache and J. -M. Lamarre and A. Lasenby and R. J. Laureijs and C. R. Lawrence and M. Le Jeune and E. Lellouch and R. Leonardi and C. Leroy and J. Lesgourgues and M. Liguori and P. B. Lilje and M. Linden-Vørnle and M. López-Caniego and P. M. Lubin and J. F. Macías-Pérez and B. Maffei and N. Mandolesi and M. Maris and D. J. Marshall and P. G. Martin and E. Martínez-González and S. Masi and S. Matarrese and F. Matthai and L. Maurin and P. Mazzotta and P. McGehee and P. R. Meinhold and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and S. Mitra and M. -A. Miville-Deschênes and A. Moneti and L. Montier and R. Moreno and G. Morgante and D. Mortlock and D. Munshi and J. A. Murphy and P. Naselsky and F. Nati and P. Natoli and C. B. Netterfield and H. U. Nørgaard-Nielsen and F. Noviello and D. Novikov and I. Novikov and S. Osborne and C. A. Oxborrow and F. Paci and L. Pagano and F. Pajot and R. Paladini and D. Paoletti and B. Partridge and F. Pasian and G. Patanchon and O. Perdereau and L. Perotto and F. Perrotta and F. Piacentini and M. Piat and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and N. Ponthieu and L. Popa and T. Poutanen and G. W. Pratt and G. Prézeau and S. Prunet and J. -L. Puget and J. P. Rachen and M. Reinecke and M. Remazeilles and C. Renault and S. Ricciardi and T. Riller and I. Ristorcelli and G. Rocha and C. Rosset and G. Roudier and B. Rusholme and D. Santos and G. Savini and E. P. S. Shellard and L. D. Spencer and J. -L. Starck and V. Stolyarov and R. Stompor and R. Sudiwala and R. Sunyaev and F. Sureau and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and D. Tavagnacco and S. Techene and L. Terenzi and M. Tomasi and M. Tristram and M. Tucci and G. Umana and L. Valenziano and J. Valiviita and B. Van Tent and P. Vielva and F. Villa and N. Vittorio and L. A. Wade and B. D. Wandelt and D. Yvon and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1303.5069},
year = {2014}
}
备注
Submitted to Astronomy and Astrophysics. 25 pages, 25 figures, 14 tables. high resolution version available from the ESA website : http://www.sciops.esa.int/index.php?project=PLANCK&page=Planck_Published_Papers (21/01/14) New version with referee's comments resubmitteed to AA