APA
Click to copy
Amiri, M., Bandura, K., Boskovic, A., Cliche, J., Deng, M., Dobbs, M., … Wulf, D. (2022). Using the Sun to Measure the Primary Beam Response of the Canadian Hydrogen Intensity Mapping Experiment. Astrophysical Journal.
Chicago/Turabian
Click to copy
Amiri, M., K. Bandura, Ana Boskovic, J. Cliche, M. Deng, M. Dobbs, M. Fandino, et al. “Using the Sun to Measure the Primary Beam Response of the Canadian Hydrogen Intensity Mapping Experiment.” Astrophysical Journal (2022).
MLA
Click to copy
Amiri, M., et al. “Using the Sun to Measure the Primary Beam Response of the Canadian Hydrogen Intensity Mapping Experiment.” Astrophysical Journal, 2022.
BibTeX Click to copy
@article{m2022a,
title = {Using the Sun to Measure the Primary Beam Response of the Canadian Hydrogen Intensity Mapping Experiment},
year = {2022},
journal = {Astrophysical Journal},
author = {Amiri, M. and Bandura, K. and Boskovic, Ana and Cliche, J. and Deng, M. and Dobbs, M. and Fandino, M. and Foreman, S. and Halpern, M. and Hill, A. and Hinshaw, G. and Höfer, C. and Kania, Joseph W. and Landecker, T. and MacEachern, Joshua and Masui, K. and Mena-Parra, J. and Newburgh, L. and Ordog, A. and Pinsonneault-Marotte, T. and Polzin, A. and Reda, A. and Shaw, J. and Siegel, S. and Singh, Saurabh and Vanderlinde, K. and Wang, Haochen and Willis, James S. and Wulf, D.}
}
We present a beam pattern measurement of the Canadian Hydrogen Intensity Mapping Experiment (CHIME) made using the Sun as a calibration source. As CHIME is a pure drift-scan instrument, we rely on the seasonal north–south motion of the Sun to probe the beam at different elevations. This semiannual range in elevation, combined with the radio brightness of the Sun, enables a beam measurement that spans ∼7200 square degrees on the sky without the need to move the telescope. We take advantage of observations made near solar minimum to minimize the impact of solar variability, which is observed to be <10% in intensity over the observation period. The resulting data set is highly complementary to other CHIME beam measurements—both in terms of angular coverage and systematics—and plays an important role in the ongoing program to characterize the CHIME primary beam.