Solving self-calibration of ALMA data with an optimization method
Abstract We reformulate the gain correction problem of radio interferometry as an optimization problem with regularization, which is solved efficiently with an iterative algorithm. Combining this new method with our previously proposed imaging method, PRIISM, the whole process of the self-calibration of radio interferometry is redefined as a single optimization problem with regularization. As a result, the gains are corrected and an image is estimated. We tested the new approach with ALMA observation data and found that it provides promising results.
Authors
- Tsutomu T. Takeuchi (ORCID: https://orcid.org/0000-0001-8416-7673)
- Shiro Ikeda (ORCID: https://orcid.org/0000-0002-2462-1448)
- Takeshi Nakazato (ORCID: https://orcid.org/0000-0003-3780-8890)
- Takashi Tsukagoshi (ORCID: https://orcid.org/0000-0002-6034-2892)
- Masayuki Yamaguchi (ORCID: https://orcid.org/0000-0002-8185-9882)
Institutions
- Ashikaga University (JP)
- Institute of Astronomy and Astrophysics, Academia Sinica (TW)
- Kavli Institute for the Physics and Mathematics of the Universe (JP)
- The Graduate University for Advanced Studies, SOKENDAI (JP)
- Theodore Roosevelt High School (US)
- Kavli Institute for the Physics and Mathematics of the Universe (JP)
- The Institute of Statistical Mathematics (JP)
- National Astronomical Observatory of Japan (JP)
- Nagoya University (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- Publications of the Astronomical Society of Japan
- Published
- 2024-12-18
- DOI
- https://doi.org/10.1093/pasj/psae114
- Primary Topic
- Calibration and Measurement Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- U.S. Nuclear Regulatory Commission
- Ministry of Science and Technology
- European School of Oncology
- Alberta Livestock and Meat Agency
- Korea Astronomy and Space Science Institute
- National Astronomical Observatory of Japan
- National Science and Technology Council
- Japan Society for the Promotion of Science
- National Institutes of Natural Sciences
- JST-Mirai Program