28/09/2026
Convidamos todas e todos para o próximo Colóquio de Pesquisas do Centro de Rádio Astronomia e Astrofísica Mackenzie (CRAAM) da Escola de Engenharia Mackenzie.
Título: The diagnostic power of heliospheric radio emissions
Dra. Nicolina Chrysaphi
Istituto Nazionale di Astrofisica (INAF)
Resumo: Radio waves originating from both solar and extra-solar sources are ubiquitous in the heliosphere. The most intense radio emissionsin our solar system are excited by semi-relativistic electrons accelerated into the heliosphere by solar flares and shocks driven by coronal mass ejections. These radio emissions, known as solar radio bursts, are highly-susceptible to anisotropic scattering off small-scale heliospheric density fluctuations. While this significantly complicates their analysis, interpretation, and our ability to extract the true physical properties from observations, it also makes solar radio bursts a powerful and unique diagnostic of the heliospheric environment. In this talk, I will show how the combination of advanced radio-wave propagation simulations and observations from both ground- and space-based radio instruments have facilitated recent advancements in the quantification of radio-wave propagation effects and the subsequent characterisation of the heliospheric environment. I will highlight results from multiinstrument, multi-vantage studies, showcasing the diagnostics enabled by observing radio waves across several longitudes and a wide range of frequencies. Finally, I will give an overview of the publiclyaccessible, open-source outputs of our recent workshop “Bridging Gaps in Heliospheric Radio Data Analyses”, aiming to enhance the accessibility, standardisation, and usability of heliospheric radio data.
01 de outubro de 2026
10h (horário de Brasília)
Online
Link: https://teams.microsoft.com/meet/269082595685077?p=2kSPzHaaUDkAc6XkhI
