Abstract Details


Name: Nancy Narang
Affiliation: Royal Observatory of Belgium
Conference ID: TVS202510149
Title: Transient EUV Brightenings at the Finest Scales: New Insights from Solar Orbiter
Authors and Co-Authors:
Abstract Type: Invited by SOC
Abstract: The extreme-ultraviolet (EUV) brightenings identified by Solar Orbiter, commonly known as “campfires”, are the smallest transient brightenings detected to date in the solar corona. These transient brightenings have been classified based on their observational morphology. For instance, they resemble bright dots, small jetlets, or tiny loops. The prevalence of the small-scale EUV transient brightenings makes them one of the candidates for heating the solar corona. This aligns with the “nanoflare” theory, which posits that the corona is heated impulsively by frequent magnetic reconnection events occurring continuously at fine-scales. The Solar Orbiter mission, launched in 2020, provides unprecedented views of small-scale atmospheric features, carrying instruments with high temporal and spatial resolution that access previously unresolved scales. Specifically, the Extreme Ultraviolet Imager (EUI) has revealed the presence of EUV transient brightenings with spatial scales as small as a few hundred kilometers and lifetimes of only a few seconds, pushing our observations to the finest scales ever achieved. These ubiquitous, fine-scale EUV transients represent the newest members of the “nanoflare” family. In this talk, I will present the latest results on the small-scale EUV transient brightenings observed from Solar Orbiter/EUI. I will discuss their potential coupling over the solar atmosphere, and evaluate their contribution to the heating of solar corona.