Wibisono, AD;
Branduardi-Raymont, G;
Coates, AJ;
Dunn, WR;
French, RJ;
(2023)
Jupiter’s equatorial X-ray emissions over two solar cycles.
Monthly Notices of the Royal Astronomical Society
10.1093/mnras/stad905.
(In press).
![]() |
Text
Wibisono+Sun-Jupiter_2023_supplemental_files.zip - Published Version Download (47kB) |
Preview |
Text
Wibisono+Sun-Jupiter_2023.pdf - Published Version Download (5MB) | Preview |
Abstract
Jupiter’s disk is bright in X-rays as H2 molecules in the atmosphere are very effective at scattering solar X-rays. K-shell fluorescence from carbon atoms in atmospheric methane is thought to also provide a minor contribution. XMM-Newton has now observed Jupiter over a span of nearly two solar cycles from 2003 to 2021, offering the opportunity to determine whether Jupiter’s disk emissions are driven by solar activity or not. We compare the count rates of X-rays of energies 0.2–10.0 keV, 0.2–2.0 keV, 2.1–5.0 keV, and 5.1–10.0 keV from the planet’s equatorial region, with the sunspot number and F10.7 adjusted solar radio flux. The respective Pearson’s Correlation Coefficients for both are 0.88/0.84, 0.86/0.83, 0.40/0.34 and 0.29/0.22 for each energy demonstrating that the low energy X-ray disk emissions are indeed controlled by the Sun’s activity. This relationship is less clear for the higher energy emissions, raising questions around the source of these emissions.
Type: | Article |
---|---|
Title: | Jupiter’s equatorial X-ray emissions over two solar cycles |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1093/mnras/stad905 |
Publisher version: | https://doi.org/10.1093/mnras/stad905 |
Language: | English |
Additional information: | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Planets and satellites: atmospheres, Sun: X-rays, gamma-rays, planets and satellites: gaseous planets, X-rays: general |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS 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 |
URI: | https://discovery.ucl.ac.uk/id/eprint/10167684 |




Archive Staff Only
![]() |
View Item |