Progress in Single Dish 21 cm Intensity Mapping

Christopher Joseph Anderson


Progress has been made in finalizing the design of a 7 element array to be installed on the Green Bank Telescope in the 700 to 900 MHz frequency range.  The new array should increase HI intensity mapping speed by a factor of 4.  The design review for the array is scheduled for October 19.  At the same time, 21 cm intensity mapping data collected from the Parkes radio telescope has been analyzed.  We have detected HI signal in cross-correlation with the 2df Galaxy Survey.


Hydrogen, 21 cm, Intensity Mapping

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Chang, T.-C., Pen, U.-L., Bandura, K., and Peterson, J. B. Hydrogen 21-cm Intensity Mapping at redshift 0.8. ArXiv e-prints (July 2010).

Kooi, P., Leong, M., and YEO, T. Dipole-Eexcited Short Backfire Antenna With Corrugated Rim. Electronics Letters 15 (1979).

Liu, A., and Tegmark, M. How well can we measure and understand foregrounds with 21 cm experiments? Mon. Not. Roy. Astron. Soc. 419 (2012), 3491–3504.

Morales, M. F., and Wyithe, J. S. B. Reionization and Cosmology with 21-cm Fluctuations. 48 (Sept. 2010), 127–171.

Peterson, J. B., Aleksan, R., Ansari, R., Bandura, K., Bond, D., Bun-

ton, J., Carlson, K., Chang, T.-C., DeJongh, F., Dobbs, M., Dodelson, S.,

Darhmaoui, H., Gnedin, N., Halpern, M., Hogan, C., Le Goff, J.-M., Liu,

T. T., Legrouri, A., Loeb, A., Loudiyi, K., Magneville, C., Marriner, J.,

McGinnis, D. P., McWilliams, B., Moniez, M., Palanque-Delabruille, N.,

Pasquinelli, R. J., Pen, U.-L., Rich, J., Scarpine, V., Seo, H.-J., Sigurd-

son, K., Seljak, U., Stebbins, A., Steffen, J. H., Stoughton, C., Timbie,

P. T., Vallinotto, A., and Teche, C. 21-cm Intensity Mapping. In astro2010: The Astronomy and Astrophysics Decadal Survey (2009), vol. 2010 of ArXiv Astrophysics e-prints.

Switzer, E. R., et al. Determination of z 0.8 neutral hydrogen fluctuations using the 21 cm intensity mapping auto-correlation. Mon. Not. Roy. Astron. Soc. 434 (2013), L46.



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