The Radio and Microwave Sky as Seen by Juno on its Mission to Jupiter

We present six nearly full-sky maps made from data taken by radiometers on the Juno satellite during its 5-year flight to Jupiter. The maps represent integrated emission over \(\sim 4\%\) passbands spaced approximately in octaves between 600 MHz and 21.9 GHz. Long time-scale offset drifts are remove...

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Bibliographic Details
Published in:arXiv.org 2024-05
Main Authors: Anderson, Christopher, Berger, Philippe, Chang, Tzu-Ching, Doré, Olivier, Brown, Shannon, Levin, Steve, Seiffert, Michael
Format: Article
Language:English
Subjects:
Algorithms
Astronomical maps
Consistency tests
Frequencies
Jupiter probes
Octaves
Radiometers
Self calibration
Online Access:Get full text
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Summary:We present six nearly full-sky maps made from data taken by radiometers on the Juno satellite during its 5-year flight to Jupiter. The maps represent integrated emission over \(\sim 4\%\) passbands spaced approximately in octaves between 600 MHz and 21.9 GHz. Long time-scale offset drifts are removed in all bands, and, for the two lowest frequency bands, gain drifts are also removed from the maps via a self-calibration algorithm similar to the NPIPE pipeline used by the Planck collaboration. We show that, after this solution is applied, residual noise in the maps is consistent with thermal radiometer noise. We verify our map solutions with several consistency tests and end-to-end simulations. We also estimate the level of pixelization noise and polarization leakage via simulations.
ISSN:2331-8422