Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz
We present a new method for interferometric imaging that is ideal for the large fields of view and compact arrays common in 21 cm cosmology. We first demonstrate the method with the simulations for two very different low-frequency interferometers, the Murchison Widefield Array and the MIT Epoch of R...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Oxford University Press
2017
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| Online Access: | http://hdl.handle.net/1721.1/109772 https://orcid.org/0000-0001-8267-3425 https://orcid.org/0000-0001-7670-7190 https://orcid.org/0000-0003-3336-9958 https://orcid.org/0000-0001-7776-7240 https://orcid.org/0000-0002-0086-7363 https://orcid.org/0000-0003-2723-3560 |
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| author | Liu, A. Bradley, R. F. Hickish, J. Sanchez, N. Zarb Adami, K. Zheng, Haoxuan Tegmark, Max Erik Dillon, Joshua Shane Neben, Abraham Richard Tribiano, Shana Buza, Victor Ewall-Wice, Aaron Michael Gharibyan, Hrant Losh, Jonathan L Kunz, Eben A Lutomirski, Andrew Michael Morgan, Edward H Narayanan, Siddharth Madhavan Perko, Ashley N Rosner, Devon J. Valdez, Melinda Villasenor, Jesus Noel Samonte Yang, Hong Zelko, Ioana A. Zheng, K. Schutz, Katelin |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Liu, A. Bradley, R. F. Hickish, J. Sanchez, N. Zarb Adami, K. Zheng, Haoxuan Tegmark, Max Erik Dillon, Joshua Shane Neben, Abraham Richard Tribiano, Shana Buza, Victor Ewall-Wice, Aaron Michael Gharibyan, Hrant Losh, Jonathan L Kunz, Eben A Lutomirski, Andrew Michael Morgan, Edward H Narayanan, Siddharth Madhavan Perko, Ashley N Rosner, Devon J. Valdez, Melinda Villasenor, Jesus Noel Samonte Yang, Hong Zelko, Ioana A. Zheng, K. Schutz, Katelin |
| author_sort | Liu, A. |
| collection | MIT |
| description | We present a new method for interferometric imaging that is ideal for the large fields of view and compact arrays common in 21 cm cosmology. We first demonstrate the method with the simulations for two very different low-frequency interferometers, the Murchison Widefield Array and the MIT Epoch of Reionization (MITEoR) experiment. We then apply the method to the MITEoR data set collected in 2013 July to obtain the first northern sky map from 128 to 175 MHz at ∼2° resolution and find an overall spectral index of −2.73 ± 0.11. The success of this imaging method bodes well for upcoming compact redundant low-frequency arrays such as Hydrogen Epoch of Reionization Array. Both the MITEoR interferometric data and the 150 MHz sky map are available at http://space.mit.edu/home/tegmark/omniscope.html. |
| first_indexed | 2024-09-23T12:33:43Z |
| format | Article |
| id | mit-1721.1/109772 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:33:43Z |
| publishDate | 2017 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | mit-1721.1/1097722022-10-01T09:47:11Z Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz Liu, A. Bradley, R. F. Hickish, J. Sanchez, N. Zarb Adami, K. Zheng, Haoxuan Tegmark, Max Erik Dillon, Joshua Shane Neben, Abraham Richard Tribiano, Shana Buza, Victor Ewall-Wice, Aaron Michael Gharibyan, Hrant Losh, Jonathan L Kunz, Eben A Lutomirski, Andrew Michael Morgan, Edward H Narayanan, Siddharth Madhavan Perko, Ashley N Rosner, Devon J. Valdez, Melinda Villasenor, Jesus Noel Samonte Yang, Hong Zelko, Ioana A. Zheng, K. Schutz, Katelin Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Zheng, Haoxuan Tegmark, Max Erik Dillon, Joshua Shane Neben, Abraham Richard Tribiano, Shana Buza, Victor Ewall-Wice, Aaron Michael Gharibyan, Hrant Losh, Jonathan L Kunz, Eben A Lutomirski, Andrew Michael Morgan, Edward H Narayanan, Siddharth Madhavan Perko, Ashley N Rosner, Devon J. Schutz, Katharine Valdez, Melinda Villasenor, Jesus Noel Samonte Yang, Hong Zelko, Ioana A. Zheng, K. We present a new method for interferometric imaging that is ideal for the large fields of view and compact arrays common in 21 cm cosmology. We first demonstrate the method with the simulations for two very different low-frequency interferometers, the Murchison Widefield Array and the MIT Epoch of Reionization (MITEoR) experiment. We then apply the method to the MITEoR data set collected in 2013 July to obtain the first northern sky map from 128 to 175 MHz at ∼2° resolution and find an overall spectral index of −2.73 ± 0.11. The success of this imaging method bodes well for upcoming compact redundant low-frequency arrays such as Hydrogen Epoch of Reionization Array. Both the MITEoR interferometric data and the 150 MHz sky map are available at http://space.mit.edu/home/tegmark/omniscope.html. National Science Foundation (U.S.) (AST-0908848) National Science Foundation (U.S.) (AST-1105835) National Science Foundation (U.S.) (AST-1440343) 2017-06-09T17:58:46Z 2017-06-09T17:58:46Z 2017-03 2016-11 Article http://purl.org/eprint/type/JournalArticle 0035-8711 1365-2966 http://hdl.handle.net/1721.1/109772 Zheng, H.; Tegmark, M.;Dillon, J. S.; Liu, A.; Neben; A. R.; Tribiano, S. M.; Bradley, R. F.; Buza, V. et al. "Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz." Monthly Notices of the Royal Astronomical Society 465, no. 3 (March 2017) : 2901–2915 © 2016 The Authors https://orcid.org/0000-0001-8267-3425 https://orcid.org/0000-0001-7670-7190 https://orcid.org/0000-0003-3336-9958 https://orcid.org/0000-0001-7776-7240 https://orcid.org/0000-0002-0086-7363 https://orcid.org/0000-0003-2723-3560 en_US http://dx.doi.org/10.1093/mnras/stw2910 Monthly Notices of the Royal Astronomical Society Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Oxford University Press arXiv |
| spellingShingle | Liu, A. Bradley, R. F. Hickish, J. Sanchez, N. Zarb Adami, K. Zheng, Haoxuan Tegmark, Max Erik Dillon, Joshua Shane Neben, Abraham Richard Tribiano, Shana Buza, Victor Ewall-Wice, Aaron Michael Gharibyan, Hrant Losh, Jonathan L Kunz, Eben A Lutomirski, Andrew Michael Morgan, Edward H Narayanan, Siddharth Madhavan Perko, Ashley N Rosner, Devon J. Valdez, Melinda Villasenor, Jesus Noel Samonte Yang, Hong Zelko, Ioana A. Zheng, K. Schutz, Katelin Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz |
| title | Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz |
| title_full | Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz |
| title_fullStr | Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz |
| title_full_unstemmed | Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz |
| title_short | Brute-Force Mapmaking with Compact Interferometers: A MITEoR Northern Sky Map from 128 MHz to 175 MHz |
| title_sort | brute force mapmaking with compact interferometers a miteor northern sky map from 128 mhz to 175 mhz |
| url | http://hdl.handle.net/1721.1/109772 https://orcid.org/0000-0001-8267-3425 https://orcid.org/0000-0001-7670-7190 https://orcid.org/0000-0003-3336-9958 https://orcid.org/0000-0001-7776-7240 https://orcid.org/0000-0002-0086-7363 https://orcid.org/0000-0003-2723-3560 |
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