Linear map-making with LuSEE-Night
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917313392934912 |
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| author | Camacho, Hugo Rotermund, Kaja M. Slosar, Anže Bale, Stuart D. Barker, David W. Burns, Jack Bye, Christian H. Jones, Johnny Dorigo Fahs, Adam Goetz, Keith Herrmann, Sven Hibbard, Joshua J. Jeong, Oliver Klein-Wolt, Marc Koopmans, Léon V. E. Krajewski, Joel Li, Zack Louis, Corentin Maksimović, Milan McLean, Ryan Monsalve, Raul A. O'Connor, Paul Parsons, Aaron Piat, Michel Pulupa, Marc Pund, Rugved Rapetti, David Saliwanchik, Benjamin Speedie, Graham Stefanov, Nikolai Sundkvist, David Suzuki, Aritoki Vedantham, Harish K. Yousuf, Fatima Zarka, Philippe |
| author_facet | Camacho, Hugo Rotermund, Kaja M. Slosar, Anže Bale, Stuart D. Barker, David W. Burns, Jack Bye, Christian H. Jones, Johnny Dorigo Fahs, Adam Goetz, Keith Herrmann, Sven Hibbard, Joshua J. Jeong, Oliver Klein-Wolt, Marc Koopmans, Léon V. E. Krajewski, Joel Li, Zack Louis, Corentin Maksimović, Milan McLean, Ryan Monsalve, Raul A. O'Connor, Paul Parsons, Aaron Piat, Michel Pulupa, Marc Pund, Rugved Rapetti, David Saliwanchik, Benjamin Speedie, Graham Stefanov, Nikolai Sundkvist, David Suzuki, Aritoki Vedantham, Harish K. Yousuf, Fatima Zarka, Philippe |
| contents | LuSEE-Night is a pathfinder radio telescope on the lunar far side employing four 3-m monopole antennas arranged as two horizontal cross pseudo-dipoles on a rotational stage and sensitive to the radio sky in the 1-50 MHz frequency band. LuSEE-Night measures the corresponding 16 correlation products as a function of frequency. While each antenna combination measures radiation coming from a large area of the sky, their aggregate information as a function of phase in the lunar cycle and rotational stage position can be deconvolved into a low-resolution map of the sky. We study this deconvolution using linear map-making based on the Wiener filter algorithm. We illustrate how systematic effects can be effectively marginalised over as contributions to the noise covariance and demonstrate this technique on beam knowledge uncertainty and gain fluctuations. With reasonable assumptions about instrument performance, we show that LuSEE-Night should be able to map the sub-50 MHz sky at a ~5-degree resolution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_16773 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Linear map-making with LuSEE-Night Camacho, Hugo Rotermund, Kaja M. Slosar, Anže Bale, Stuart D. Barker, David W. Burns, Jack Bye, Christian H. Jones, Johnny Dorigo Fahs, Adam Goetz, Keith Herrmann, Sven Hibbard, Joshua J. Jeong, Oliver Klein-Wolt, Marc Koopmans, Léon V. E. Krajewski, Joel Li, Zack Louis, Corentin Maksimović, Milan McLean, Ryan Monsalve, Raul A. O'Connor, Paul Parsons, Aaron Piat, Michel Pulupa, Marc Pund, Rugved Rapetti, David Saliwanchik, Benjamin Speedie, Graham Stefanov, Nikolai Sundkvist, David Suzuki, Aritoki Vedantham, Harish K. Yousuf, Fatima Zarka, Philippe Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Solar and Stellar Astrophysics LuSEE-Night is a pathfinder radio telescope on the lunar far side employing four 3-m monopole antennas arranged as two horizontal cross pseudo-dipoles on a rotational stage and sensitive to the radio sky in the 1-50 MHz frequency band. LuSEE-Night measures the corresponding 16 correlation products as a function of frequency. While each antenna combination measures radiation coming from a large area of the sky, their aggregate information as a function of phase in the lunar cycle and rotational stage position can be deconvolved into a low-resolution map of the sky. We study this deconvolution using linear map-making based on the Wiener filter algorithm. We illustrate how systematic effects can be effectively marginalised over as contributions to the noise covariance and demonstrate this technique on beam knowledge uncertainty and gain fluctuations. With reasonable assumptions about instrument performance, we show that LuSEE-Night should be able to map the sub-50 MHz sky at a ~5-degree resolution. |
| title | Linear map-making with LuSEE-Night |
| topic | Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2508.16773 |