| Name: Murchana Khusroo |
| Affiliation: University of Science and Technology Meghalaya (USTM) |
| Conference ID: ASI2026_141 |
| Title: Observation of Solitary Signatures in the Vicinity of Interplanetary Shocks Using Solar Orbiter Data |
| Abstract Type: Poster |
| Abstract Category: Sun, Solar System, Exoplanets, and Astrobiology |
| Author(s) and Co-Author(s) with Affiliation: Murchana Khusroo(Department of Physics, University of Science and Technology Meghalaya, Ri Bhoi-793101, India.), Kalyan Shandilya(Department of Physics, Gauhati University, Guwahati-781014, India.) |
| Abstract: Interplanetary shocks observed in the heliosphere are typically accompanied by strong magnetic field fluctuations, which are most often discussed in terms of turbulence or linear wave activity. However, less attention has been paid to the possible presence of coherent nonlinear plasma structures in such disturbed environments. Among the most fundamental nonlinear plasma phenomena are solitary waves (or solitons), which arise from a balance between dispersion and nonlinearity and are characterized by their localized, non-dispersive nature. Although solitary structures have been extensively observed and studied in planetary magnetospheres, particularly in Earth’s magnetosphere, their occurrence and properties in interplanetary shock-related plasmas remain largely unexplored. In this study, we investigate their formation in the vicinity of interplanetary shocks using in situ observations by analyzing high-resolution magnetic field data from Solar Orbiter. On the basis of their observed temporal and directional characteristics, the detected features are consistent with non-dispersive solitary magnetic structures. To our knowledge, this represents the first observational study explicitly targeting solitary wave signatures in a shock environment using Solar Orbiter data. These observations provide a new perspective on magnetic field variability near collisionless shocks and offer a basis for future, more detailed studies of nonlinear processes in heliospheric plasmas. |
