SOTSP: HOP 438
2022-06-23T21:12:30 to 2022-06-23T21:46:30
Science Goal: Jets at the base of Solar Coronal Plumes
Program: Fast map, 102"x102", Q75, 1-side
Target: Quiet Sun
xcen=431 ycen=140
Instrument: SOTSP
HOP/JOP: 438
Description:
Main Objective: Our aim is to understand the energy build-up and release process in jets at the base of plumes. Scientific Justification: Coronal plumes are long, ray-like, open structures, which have been considered as possible sources for the solar wind. Their origin in the largely unipolar coronal holes has long been a mystery. Earlier spectroscopic and imaging observations revealed blue-shifted plasma and propagating disturbances (PDs) in plumes that are widely interpreted in terms of flows and/or propagating slow-mode waves, but these interpretations (flows vs waves) remain under debate. Recent studies (e.g., Kumar et al. 2022) have revealed numerous, quasiperiodic (P~5 min), tiny jets (so-called jetlets) associated with transient brightening, flows, and plasma heating at the chromospheric footpoints of the plumes. Our aim to observe the base of the plumes using high-resolution BBSO/GST, IRIS and Hinode SOT, EIS observations simultaneously.
