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Commissioning of FLAG: A phased array feed for the GBT

Published online by Cambridge University Press:  04 June 2018

K. M. Rajwade
Affiliation:
Department of Physics and Astronomy, West Virginia University Morgantown, WV 26505, USA email: kaustubh.rajwade@manchester.ac.uk Jodrell Bank Centre for Astrophysics, University of Manchester, Oxford Road, Manchester M193PL, UK
N. M. Pingel
Affiliation:
Department of Physics and Astronomy, West Virginia University Morgantown, WV 26505, USA email: kaustubh.rajwade@manchester.ac.uk
R. A. Black
Affiliation:
Department of Electrical Engineering, Brigham Young University, Provo, UT, USA
M. Ruzindana
Affiliation:
Department of Electrical Engineering, Brigham Young University, Provo, UT, USA
M. Burnett
Affiliation:
Department of Electrical Engineering, Brigham Young University, Provo, UT, USA
B. Jeffs
Affiliation:
Department of Electrical Engineering, Brigham Young University, Provo, UT, USA
K. Warnick
Affiliation:
Department of Electrical Engineering, Brigham Young University, Provo, UT, USA
D. J. Pisano
Affiliation:
Department of Physics and Astronomy, West Virginia University Morgantown, WV 26505, USA email: kaustubh.rajwade@manchester.ac.uk
D. R. Lorimer
Affiliation:
Department of Physics and Astronomy, West Virginia University Morgantown, WV 26505, USA email: kaustubh.rajwade@manchester.ac.uk
R. M. Prestage
Affiliation:
Green Bank Observatory, Green Bank, WV, USA
L. Hawkins
Affiliation:
Green Bank Observatory, Green Bank, WV, USA
J. Ray
Affiliation:
Green Bank Observatory, Green Bank, WV, USA
P. Marganian
Affiliation:
Green Bank Observatory, Green Bank, WV, USA
T. Chamberlin
Affiliation:
Green Bank Observatory, Green Bank, WV, USA
J. Ford
Affiliation:
Green Bank Observatory, Green Bank, WV, USA Steward Observatory, University of Arizona, Tuscon, AZ, USA
W. Shillue
Affiliation:
National Radio Astronomy Observatory, CDL, Charlottesville, VA, USA
D. A. Roshi
Affiliation:
National Radio Astronomy Observatory, CDL, Charlottesville, VA, USA
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Abstract

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Phased Array Feed (PAF) technology is the next major advancement in radio astronomy in terms of combining high sensitivity and large field of view. The Focal L-band Array for the Green Bank Telescope (FLAG) is one of the most sensitive PAFs developed so far. It consists of 19 dual-polarization elements mounted on a prime focus dewar resulting in seven beams on the sky. Its unprecedented system temperature of ~17 K will lead to a 3 fold increase in pulsar survey speeds as compared to contemporary single pixel feeds. Early science observations were conducted in a recently concluded commissioning phase of the FLAG where we clearly demonstrated its science capabilities. We observed a selection of normal and millisecond pulsars and detected giant pulses from PSR B1937+21.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2018 

References

Wang, N., Manchester, R. N., Johnston, S., Rickett, B., Zhang, J., & Chen, M., 2005, MNRAS, 358, 270CrossRefGoogle Scholar
Chippendale, A. P., O’Sullivan, J., Reynolds, J., Gough, R., Hayman, D., & Hay, S. 2010, IEEE, 648Google Scholar
Ransom, S. M., Demorest, P., Ford, J., McCullough, R., Ray, J., DuPlain, R., & Brandt, P. 2009, AAS, 214Google Scholar
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