CHIME/FRB Outriggers: KKO Station System and Commissioning Results
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| Formato: | Preprint |
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2024
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| author | Lanman, Adam E. Andrew, Shion Lazda, Mattias Shah, Vishwangi Amiri, Mandana Balasubramanian, Arvind Bandura, Kevin Boyle, P. J. Brar, Charanjot Carlson, Mark Cliche, Jean-François Gusinskaia, Nina Hendricksen, Ian T. Kaczmarek, J. F. Landecker, Tom Leung, Calvin Mckinven, Ryan Mena-Parra, Juan Milutinovic, Nikola Nimmo, Kenzie Pearlman, Aaron B. Renard, Andre Rahman, Mubdi Shaw, J. Richard Siegel, Seth R. Smegal, Rick J. Cassanelli, Tomas Chatterjee, Shami Curtin, Alice P. Dobbs, Matt Dong, Fengqiu Adam Halpern, Mark Hopkins, Hans Kaspi, Victoria M. Khairy, Kholoud Masui, Kiyoshi W. Meyers, Bradley W. Michilli, Daniele Petroff, Emily Pinsonneault-Marotte, Tristan Pleunis, Ziggy Rafiei-Ravandi, Masoud Shin, Kaitlyn Smith, Kendrick Vanderlinde, Keith Zegmott, Tarik J. |
| author_facet | Lanman, Adam E. Andrew, Shion Lazda, Mattias Shah, Vishwangi Amiri, Mandana Balasubramanian, Arvind Bandura, Kevin Boyle, P. J. Brar, Charanjot Carlson, Mark Cliche, Jean-François Gusinskaia, Nina Hendricksen, Ian T. Kaczmarek, J. F. Landecker, Tom Leung, Calvin Mckinven, Ryan Mena-Parra, Juan Milutinovic, Nikola Nimmo, Kenzie Pearlman, Aaron B. Renard, Andre Rahman, Mubdi Shaw, J. Richard Siegel, Seth R. Smegal, Rick J. Cassanelli, Tomas Chatterjee, Shami Curtin, Alice P. Dobbs, Matt Dong, Fengqiu Adam Halpern, Mark Hopkins, Hans Kaspi, Victoria M. Khairy, Kholoud Masui, Kiyoshi W. Meyers, Bradley W. Michilli, Daniele Petroff, Emily Pinsonneault-Marotte, Tristan Pleunis, Ziggy Rafiei-Ravandi, Masoud Shin, Kaitlyn Smith, Kendrick Vanderlinde, Keith Zegmott, Tarik J. |
| contents | Localizing fast radio bursts (FRBs) to their host galaxies is an essential step to better understanding their origins and using them as cosmic probes. The CHIME/FRB Outrigger program aims to add VLBI-localization capabilities to CHIME, such that FRBs may be localized to tens of milliarcsecond precision at the time of their discovery, more than sufficient for host galaxy identification. The first-built outrigger telescope is KKO, located 66 kilometers west of CHIME. Cross-correlating KKO with CHIME can achieve arcsecond-scale localization in right ascension while avoiding the worst effects of the ionosphere. This paper presents measurements of KKO's performance throughout its commissioning phase, as well as a summary of its design and function. We demonstrate KKO's capabilities as a standalone instrument by producing full-sky images, mapping the angular and frequency structure of the primary beam, and measuring feed positions. To demonstrate the localization capabilities of the CHIME -- KKO baseline, we collected five separate observations each for a set of twenty bright pulsars, and aimed to measure their positions to within 5~arcseconds. All of these pulses were successfully localized to within this specification. The next two outriggers are expected to be commissioned in 2024, and will enable subarcsecond localizations for approximately hundreds of FRBs each year. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_07898 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | CHIME/FRB Outriggers: KKO Station System and Commissioning Results Lanman, Adam E. Andrew, Shion Lazda, Mattias Shah, Vishwangi Amiri, Mandana Balasubramanian, Arvind Bandura, Kevin Boyle, P. J. Brar, Charanjot Carlson, Mark Cliche, Jean-François Gusinskaia, Nina Hendricksen, Ian T. Kaczmarek, J. F. Landecker, Tom Leung, Calvin Mckinven, Ryan Mena-Parra, Juan Milutinovic, Nikola Nimmo, Kenzie Pearlman, Aaron B. Renard, Andre Rahman, Mubdi Shaw, J. Richard Siegel, Seth R. Smegal, Rick J. Cassanelli, Tomas Chatterjee, Shami Curtin, Alice P. Dobbs, Matt Dong, Fengqiu Adam Halpern, Mark Hopkins, Hans Kaspi, Victoria M. Khairy, Kholoud Masui, Kiyoshi W. Meyers, Bradley W. Michilli, Daniele Petroff, Emily Pinsonneault-Marotte, Tristan Pleunis, Ziggy Rafiei-Ravandi, Masoud Shin, Kaitlyn Smith, Kendrick Vanderlinde, Keith Zegmott, Tarik J. Instrumentation and Methods for Astrophysics Localizing fast radio bursts (FRBs) to their host galaxies is an essential step to better understanding their origins and using them as cosmic probes. The CHIME/FRB Outrigger program aims to add VLBI-localization capabilities to CHIME, such that FRBs may be localized to tens of milliarcsecond precision at the time of their discovery, more than sufficient for host galaxy identification. The first-built outrigger telescope is KKO, located 66 kilometers west of CHIME. Cross-correlating KKO with CHIME can achieve arcsecond-scale localization in right ascension while avoiding the worst effects of the ionosphere. This paper presents measurements of KKO's performance throughout its commissioning phase, as well as a summary of its design and function. We demonstrate KKO's capabilities as a standalone instrument by producing full-sky images, mapping the angular and frequency structure of the primary beam, and measuring feed positions. To demonstrate the localization capabilities of the CHIME -- KKO baseline, we collected five separate observations each for a set of twenty bright pulsars, and aimed to measure their positions to within 5~arcseconds. All of these pulses were successfully localized to within this specification. The next two outriggers are expected to be commissioned in 2024, and will enable subarcsecond localizations for approximately hundreds of FRBs each year. |
| title | CHIME/FRB Outriggers: KKO Station System and Commissioning Results |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2402.07898 |