J12: Correlation, calibration and imaging across all wavelengths (2)

Thursday, August 21  09:40-12:00,  Room #12

Radio interferometry is a well-established technique used for imaging radio sources, and an increasing number of radio telescope arrays are being built to provide unprecedented views of the radio universe. The goal is to achieve thermal noise limited images that display no residual instrumental or systematic artifacts, so that the full sensitivity of new instruments, such as the SKA, can be harnessed. The wide bandwidths and fields of view of these instruments provide unprecedented challenges, requiring new technologies, techniques and algorithms to handle the data flow and volume. This session will review the state of the art in array imaging process, and will investigate how various compute platforms match to the various stages in the data flow.

9:40  J12.1   PERFORMANCE OF SAGECAL CALIBRATION

K. Kumazaki¹, S. Yatawatta², S. Zaroubi³

¹Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
²ASTRON, Dwingeloo, Netherlands
³Kapteyn Institute, University of Groningen, Groningen, Netherlands

10:00  J12.2   A progress report on the development and performance of OCTAVE-DAS for VERA, JVN and Japanese e-VLBI(OCTAVE)

T. Oyama, Y. Kono, N. Kawaguchi

NINS, National Astronomical Observatory of Japan, Mitaka, Japan

10:20  J12.3   FORMAL REPRESENTATION OF THE MEASUREMENTSET

F. Viallefond

lERMA, Observatoire de Paris, Paris, France

10:40  J12.4   STEFCAL - AN ALTERNATING DIRECTION IMPLICIT METHOD FOR FAST FULL POLARIZATION ARRAY CALIBRATION

S. Salvini¹, S. J. Wijnholds²

¹Oxford e-Research Centre, Oxford, United Kingdom
²ASTRON, Dwingeloo, The Netherlands

11:00  J12.5   CALIBRATION ARTEFACTS IN KAT-7 DATA

T. L. Grobler^1,2, O. M. Smirnov^1,2, R. D. Nunhokee¹

¹Department of Physics and Electronincs, Rhodes University, Grahamstown, South Africa
²SKA South Africa, Cape Town, South Africa

11:20  J12.6   ALS CALIBRATION: ANALYTIC EXPRESSIONS FOR THE ANTENNA GAINS OF A TWO AND THREE ELEMENT EAST-WEST INTERFEROMETER.

T. L. Grobler^1,2, O. M. Smirnov^1,2, R. D. Nunhokee¹

¹Department of Physics and Electronincs, Rhodes University, Grahamstown, South Africa
²SKA South Africa, Cape Town, South Africa

11:40  J12.7   OPTIMISING SKA1-MID SCALE-DEPENDENT SENSITIVITY

S. Makhathini^1,2, O. M. Smirnov^1,2, M. J. Jarvis^3,4, F. B. Abdalla⁵

¹Department of Physics and Astronomy, Rhodes University, Grahamstown, Eastern Cape, South Africa
²SKA-SA, Cape Town, Western Cape, South Africa
³Department of Physics, University of the Western Cape, Cape Town, Western Cape, South Africa
⁴Astrophysics, University of Oxford, London, England
⁵Department of Physics and Astronomy, University College London, London, England