Data Reduction and Analysis of the Python V Cosmic Microwave Background Anisotropy Experiment

• Main Author: Coble, Kimberly Ann
• Format: Report
• Language: unknown
• Published: arXiv 1999
• Subjects: Astrophysics astro-ph; FOS Physical sciences; South Pole; Amundsen-Scott; Amundsen Scott South Pole Station; Amundsen-Scott South Pole Station; Antarc*; Antarctica; South pole
• Online Access: https://dx.doi.org/10.48550/arxiv.astro-ph/9911419; https://arxiv.org/abs/astro-ph/9911419

Observations of the microwave sky using the Python telescope in its fifth season of operation at the Amundsen-Scott South Pole Station in Antarctica are presented. The system consists of a 0.75 m off-axis telescope instrumented with a HEMT amplifier-based radiometer having continuum sensitivity from 37-45 GHz in two frequency bands. With a $0.91^{\circ} \times 1.02^{\circ} $ beam the instrument fully sampled 598 deg$^2$ of sky, including fields measured during the previous four seasons of Python observations. Interpreting the observed fluctuations as anisotropy in the cosmic microwave background, we place constraints on the angular power spectrum of fluctuations in eight multipole bands up to $l \sim 260$. The observed spectrum is consistent with both the COBE experiment and previous Python results. Total-power Wiener-filtered maps of the CMB are also presented. There is no significant contamination from known foregrounds. The results show a discernible rise in the angular power spectrum from large ($l \sim 40$) to small ($l \sim 200$) angular scales. : PhD Thesis, 109 pages, includes cross-modulation analysis