Interferometric imaging with the 32 element Murchison Wide-field Array
| Autor: | Andrew Williams, Mervyn J. Lynch, K. S. Srivani, A. R. Whitney, Avinash A. Deshpande, A. Vaccarella, Sheperd S. Doeleman, S. Madhavi, Colin J. Lonsdale, Miguel F. Morales, Mark Waterson, Judd D. Bowman, A. Schinkel, David Herne, Daniel A. Mitchell, David Emrich, Rachel L. Webster, Gabrielle Allen, R. G. Edgar, J. Stevens, William A. Coles, Eric R. Morgan, Stephen M. Ord, John D. Bunton, Deepak Kumar, David L. Kaplan, N. Udaya Shankar, Justin C. Kasper, Ludi deSouza, J. E. Salah, B. B. Kincaid, A. Roshi, P. A. Kamini, B. E. Corey, Christina L. Williams, Divya Oberoi, Jonathon Kocz, Steven Tingay, E. Kratzenberg, Gianni Bernardi, T. Prabu, Alan E. E. Rogers, Roger J. Cappallo, M. R. Gopalakrishna, R. Goeke, S. Gleadow, Lincoln J. Greenhill, E. Kowald, W. Arcus, Jacqueline N. Hewitt, Steven Burns, M. Matejek, Mark Derome, L. Benkevitch, Randall B. Wayth, Michael A. Clark, Frank H. Briggs, S. R. McWhirter, Joseph Pathikulangara |
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| Přispěvatelé: | Haystack Observatory, MIT Kavli Institute for Astrophysics and Space Research, Benkevitch, Leonid, Cappallo, Roger J., Corey, Brian E., Doeleman, Sheperd Samuel, Derome, Mark F., Kincaid, Barton B., Kratzenberg, Eric W., Lonsdale, Colin John, McWhirter, Stephen R., Oberoi, Divya, Rogers, Alan E. E., Salah, Joseph E., Whitney, Alan R., Hewitt, Jacqueline N., Matejek, Michael Scott, Morgan, Edward H., Williams, Christopher Leigh |
| Rok vydání: | 2010 |
| Předmět: |
Physics
Spectral signature Field (physics) 010308 nuclear & particles physics Epoch (reference date) business.industry media_common.quotation_subject Astrophysics::Instrumentation and Methods for Astrophysics FOS: Physical sciences Astronomy and Astrophysics Field of view Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Declination Radio telescope Optics Space and Planetary Science Sky 0103 physical sciences Calibration Astrophysics - Instrumentation and Methods for Astrophysics business 010303 astronomy & astrophysics Instrumentation and Methods for Astrophysics (astro-ph.IM) media_common |
| Zdroj: | ResearcherID arXiv |
| ISSN: | 9550-0510 |
| DOI: | 10.48550/arxiv.1010.1733 |
| Popis: | The Murchison Wide-Field Array (MWA) is a low-frequency radio telescope, currently under construction, intended to search for the spectral signature of the epoch of reionization (EOR) and to probe the structure of the solar corona. Sited in western Australia, the full MWA will comprise 8192 dipoles grouped into 512 tiles and will be capable of imaging the sky south of 40° declination, from 80 MHz to 300 MHz with an instantaneous field of view that is tens of degrees wide and a resolution of a few arcminutes. A 32 station prototype of the MWA has been recently commissioned and a set of observations has been taken that exercise the whole acquisition and processing pipeline. We present Stokes I, Q, and U images from two ~4 hr integrations of a field 20° wide centered on Pictoris A. These images demonstrate the capacity and stability of a real-time calibration and imaging technique employing the weighted addition of warped snapshots to counter extreme wide-field imaging distortions. National Science Foundation (U.S.) (Grant AST-0457585) National Science Foundation (U.S.) (Grant PHY-0835713) Australian Research Council (Grant LE0775621) Australian Research Council (Grant LE0882938) United States. Air Force Office of Scientific Research (Grant FA9550-0510247) MIT School of Science |
| Databáze: | OpenAIRE |
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