The QUaD Galactic Plane Survey 1: Maps And Analysis of Diffuse Emission
T. Culverhouse, P. Ade, J. Bock, M. Bowden, M. L. Brown, G. Cahill, P., G. Castro, S. Church, R. Friedman, K. Ganga, W. K. Gear, S. Gupta, J., Hinderks, J. Kovac, A. E. Lange, E. Leitch, S. J. Melhuish, Y. Memari, J. A., Murphy, A. Orlando, R. Schwarz, C. O' Sullivan

TL;DR
This paper presents detailed maps of diffuse galactic emission at 100 and 150 GHz, analyzing intensity and polarization over a large sky area, revealing emission components beyond thermal dust and high polarization alignment.
Contribution
The survey provides high-resolution, sensitive maps of the galactic plane in intensity and polarization at two frequencies, with spectral analysis revealing emission components and polarization characteristics.
Findings
Detected excess emission at 100 GHz compared to models.
Measured polarization fractions of about 1.4-1.7% at 100 and 150 GHz.
Spectral index analysis indicates multiple emission components.
Abstract
We present a survey of ~800 square degrees of the galactic plane observed with the QUaD telescope. The primary product of the survey are maps of Stokes I, Q and U parameters at 100 and 150 GHz, with spatial resolution 5 and 3.5 arcminutes respectively. Two regions are covered, spanning approximately 245-295 and 315-5 degrees in galactic longitude l, and -4<b<+4 degrees in galactic latitude b. At 0.02 degree square pixel size, the median sensitivity is 74 and 107 kJy/sr at 100 GHz and 150 GHz respectively in I, and 98 and 120 kJy/sr for Q and U. In total intensity, we find an average spectral index of 2.35+/-0.01 (stat) +/- 0.02 (sys) for |b|<1 degree, indicative of emission components other than thermal dust. A comparison to published dust, synchrotron and free-free models implies an excess of emission in the 100 GHz QUaD band, while better agreement is found at 150 GHz. A smaller…
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