Validation of heliospheric modeling algorithms through pulsar observations I: Interplanetary scintillation-based tomography

Solar-wind 3-D reconstruction tomography based on interplanetary scintillation (IPS) studies provides fundamental information for space-weather forecasting models, and gives the possibility to determine heliospheric column densities. Here we compare the time series of Solar-wind column densities der...

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Bibliographic Details
Published inAdvances in space research Vol. 72; no. 12; pp. 5287 - 5297
Main Authors Tiburzi, C., Jackson, B.V., Cota, L., Shaifullah, G.M., Fallows, R.A., Tokumaru, M., Zucca, P.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.12.2023
Subjects
Interplanetary Scintillation
Pulsars
Solar wind
Interplanetary Scintillation
Solar wind
Pulsars
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Summary:Solar-wind 3-D reconstruction tomography based on interplanetary scintillation (IPS) studies provides fundamental information for space-weather forecasting models, and gives the possibility to determine heliospheric column densities. Here we compare the time series of Solar-wind column densities derived from long-term observations of pulsars, and the Solar-wind reconstruction provided by the UCSD IPS tomography. In particular, we analyze the 2016, 2017 and 2018 Solar passages of PSR J0034-0534, and the 2016 and 2018 Solar passages of PSR J1022 + 1001. The results show that, where the UCSD IPS tomography makes use of its most robust settings, the matches between the two techniques are characterized by Pearson’s R coefficients ranging from 0.64 to 0.90, indicating a good level of agreement. This unique work represents a completely independent comparison and validation of these techniques to provide such measurements, and it strengthens confidence in the use of both in space-weather analyses applications.
ISSN:0273-1177
1879-1948
DOI:10.1016/j.asr.2022.04.070