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

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

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  • NETL
  • NSTL
  • Elsevier
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.

Interplanetary ScintillationPulsarsSolar wind

C. Tiburzi、B.V. Jackson、L. Cota、G.M. Shaifullah、R.A. Fallows、M. Tokumaru、P. Zucca

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INAF, Osservatorio Astronomico di Cagliari, Via delta Scienza 5, 09047 Selargius, Italy

Center for Astrophysics and Space Sciences, University of California, San Diego, LaJolla, CA 92093-0424, USA

Dipartimento di Fisica 'G. Occhialini', Universita di Milano-Bicocca, Piazza delta Scienza 3, 20126 Milano, Italy||INFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, 1-20126 Milano, Italy||ASTRON - the Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, the Netherlands

ASTRON - the Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, the Netherlands

Institute for Space-Earth Environmental Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan

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2023

10.1016/j.asr.2022.04.070

Advances in space research: The official journal of the Committee on Space Research

Advances in space research: The official journal of the Committee on Space Research

EI
ISSN：0273-1177
年,卷(期)：2023.72(12)
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