Multiwavelength Observations of Jupiter's Auroral Hot Spot

Details Multiwavelength Observations of Jupiter's Auroral Hot Spot Multiwavelength Observations of Jupiter's Auroral Hot Spot

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9685e&link_type=abstract

HST Proposal ID #9685

Physics

Hst Proposal Id #9685

Scientific paper

Joint Chandra HRC-I and HST STIS observations in Dec 2000 found that the northern auroral x-ray emission comes from a localized hot spot located poleward of the main auroral oval, magnetically connected to regions in the outer magnetosphere beyond 30 Jupiter radii. In addition, the x-ray hot spot pulsates with a quasi-period of about 45 minutes. The hot spot occurs in a region where both anomalous infrared emissions and bright, transient far-ultraviolet {FUV} flares have been observed. These results are inconsistent with excitation by energetic heavy ions precipitating from the region of the Io plasma torus. Our simultaneous HST STIS and CHANDRA ACIS-S observations of Jupiter seek to understand the source mechanisms and energetics of the jovian x-ray aurora. We will also seek near-simultaneous ground infrared observations with the IRTF.

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