Dunn, WR;
Weigt, DM;
Grodent, D;
Yao, ZH;
May, D;
Feigelman, K;
Sipos, B;
... Ray, LC; + view all
(2022)
Jupiter's X‐Ray and UV Dark Polar Region.
Geophysical Research Letters
, 49
(11)
, Article e2021GL097390. 10.1029/2021gl097390.
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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.
| Type: | Article |
|---|---|
| Title: | Jupiter's X‐Ray and UV Dark Polar Region |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2021gl097390 |
| Publisher version: | https://doi.org/10.1029/2021GL097390 |
| Language: | English |
| Additional information: | © 2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Jupiter, Hubble Space Telescope, magnetosphere, dark polar region, aurora, Chandra X-ray Observatory |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10150024 |
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