Home > Research > Publications & Outputs > Jupiter's X‐Ray and UV Dark Polar Region

Associated organisational unit


Text available via DOI:

View graph of relations

Jupiter's X‐Ray and UV Dark Polar Region

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • W. R. Dunn
  • D. M. Weigt
  • D. Grodent
  • Z. H. Yao
  • D. May
  • K. Feigelman
  • B. Sipos
  • D. Fleming
  • S. McEntee
  • B. Bonfond
  • G. R. Gladstone
  • R. E. Johnson
  • C. M. Jackman
  • R. L. Guo
  • G. Branduardi‐Raymont
  • A. D. Wibisono
  • R. P. Kraft
  • J. D. Nichols
  • L. C. Ray
Article numbere2021GL097390
<mark>Journal publication date</mark>16/06/2022
<mark>Journal</mark>Geophysical Research Letters
Issue number11
Number of pages13
Publication StatusPublished
Early online date7/06/22
<mark>Original language</mark>English


Abstract: We present 14 simultaneous Chandra X‐ray Observatory (CXO)‐Hubble Space Telescope (HST) observations of Jupiter's Northern X‐ray and ultraviolet (UV) aurorae from 2016 to 2019. Despite the variety of dynamic UV and X‐ray auroral structures, one region is conspicuous by its persistent absence of emission: the dark polar region (DPR). Previous HST observations have shown that very little UV emission is produced by the DPR. We find that the DPR also produces very few X‐ray photons. For all 14 observations, the low level of X‐ray emission from the DPR is consistent (within 2‐standard deviations) with scattered solar emission and/or photons spread by Chandra's Point Spread Function from known X‐ray‐bright regions. We therefore conclude that for these 14 observations the DPR produced no statistically significant detectable X‐ray signature.