IRTF Data Archive Program Information

# # Program information file # PROGRAM_ID 2022A079 PROGRAM_TITLE High-cadence imaging measurements of Jupiter's mid-infrared auroral emission PROGRAM_INV1 James Sinclair PROGRAM_INV2 Glenn Orton PROGRAM_INV3 Chihiro Tao PROGRAM_INV4 Tom Momary PROGRAM_INV5 Thomas Greathouse PROGRAM_SCICAT major planets / satellites PROGRAM_ABSTRACT_BEG In this investigation, Jupiter will be imaged at 7.7 and 12.7 micron using MIRSI in 45-minute blocks over 14 successive nights in semester 2022B. The proposed data will be used to search for variability of Jupiter's auroral stratospheric CH4 and C2H6 emission over short timescales. Any observed variability will be compared with external solar-wind conditions at Jupiter to understand whether solar wind compressions control the strength of Jupiter's mid-infrared auroral emission. If variability of the mid-infrared auroral emission is observed in the absence of the solar-wind events, this would suggest intrinsic magnetospheric processes also drive the observed variability. These observations will be insightful of the coupling between Jupiter's polar stratosphere, magnetosphere and external solar-wind environment. PROGRAM_ABSTRACT_END