Observations signatures of coronal heating mechanisms in active region cores

When (times in MT)
Tue, Apr 11 2023, 11am - 1 hour
Event Type
Paola Testa
Harvard CfA
Building & Room
CG1-3131 in-person & virtual

Recent high resolution observations of the solar atmosphere (e.g., with SDO, Hinode, SST, IRIS) provide new powerful diagnostics of the mechanisms responsible for heating the solar corona. I will discuss how these new observations have enabled significant advances in our understanding of coronal heating properties in active regions. I will especially focus on coordinated IRIS/SDO/SST active region observations of nanoflare heated AR core loops to showcase the diagnostics potential of high spatial, spectral, and temporal resolution chromospheric/transition region/coronal observations, when coupled with state-of-the-art (1D/3D) models.

About the Speaker

I received my doctorate in Physics at the University of Palermo (Italy) with a thesis on the topic of coronal activity in the Sun and other stars. After my graduate studies I held a post-doctoral appointment at the Kavli Institute for Astrophysics at MIT, in the Chandra HETG group. My research focuses on understanding the heating mechanisms and X-ray emission processes in the hot outer layers of the atmosphere of the Sun and other stars, by combining observations with advanced numerical modeling. My interests encompass a wide range of astrophysical sources including the Sun, late-type main/pre-main sequence, and early-type stars. I am also involved in development and operations of space instrumentation, as co-I or instrument team member of several missions and of rocket experiments, including the Interface Region Imaging Spectrograph (IRIS), the Hinode X-ray Telescope (XRT), the SDO Atmospheric Imaging Assembly (AIA), the Marshall Grazing Incidence X-ray Spectrometer (MaGIXS), the Hi-resolution Coronal Imager (Hi-C), and the upcoming Multi-slit Solar Explorer (MUSE) NASA MIDEX mission and EUV high-throughput Spectroscopic Telescope (EUVST) mission.