| Name: | Yoshita Baruah |
| Affiliation: | Indian Institute of Science Education and Research, Kolkata |
| Conference ID : | ASI2024_270 |
| Title : | UTILIZING INNER HELIOSPHERIC IN-SITU OBSERVATIONS TO IMPROVE PREDICTION OF CME FLUX ROPE PROPERTIES NEAR EARTH |
| Authors : | Yoshita Baruah1,2, Dibyendu Nandy1,2, Sanchita Pal3, Nat Gopalswamy4, Seiji Yashiro4,5, Sachiko Akiyama4,5 |
| Authors Affiliation: | 1Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
2Center of Excellence in Space Sciences India, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
3NASA Postdoctoral Program Fellow, NASA Goddard Space Flight Center, MD, USA
4Heliophysics, NASA Goddard Space Flight Center, Greenbelt, MD, USA
5Department of Physics, The Catholic University of America, Washington DC, USA
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| Mode of Presentation: | Poster |
| Abstract Category : | Sun, Solar System, Exoplanets, and Astrobiology |
| Abstract : | Prediction of the impact of a coronal mass ejection (CME) on the Earth’s magnetosphere primarily depends on the direction of propagation of the CME, its time of arrival at Earth, and its properties at 1au - most importantly its velocity, magnetic field orientation and magnitude. A number of analytical and semi-analytical models have been proposed to predict the magnetic properties of CMEs at 1au. One such model is the CESSI Magnetic Cloud Prediction (CESSI-MCP) model proposed by Pal et al., 2022 which uses near Sun magnetic, kinetic and morphological properties of CMEs and evolves them as force free flux ropes to predict their magnetic properties at Earth and the duration of passage. However, multiple studies have reported deflection of CMEs during their interplanetary transit due to interaction with the ambient solar wind, other flux ropes and high speed streams. Deflection of CMEs can result in a change of their latitude and longitude, thus altering their direction of propagation. CMEs are also known to experience rotations in the heliosphere, which can result in unanticipated magnetic profiles at 1au. Such evolution of Interplanetary CMES (ICMEs) during their passage through the inner heliosphere impacts their geoeffectiveness. With the availability of in situ solar wind data from inner heliospheric satellite missions like Solar Orbiter, Parker Solar Probe, Messenger etc., it is now possible to constrain evolving CME properties during their transit. In this work we explore the possibility of using in-situ solar wind data from the inner heliosphere from present and future missions for correcting flux rope predictions made by semi-analytical models like the MCP model. |
