Stansby, D;
Berčič, L;
Matteini, L;
Owen, CJ;
French, R;
Baker, D;
Badman, ST;
(2021)
Sensitivity of solar wind mass flux to coronal temperature.
Astronomy & Astrophysics
, 650
, Article L2. 10.1051/0004-6361/202039789.
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Abstract
Solar wind models predict that the mass flux carried away from the Sun in the solar wind should be extremely sensitive to the temperature in the corona, where the solar wind is accelerated. We perform a direct test of this prediction in coronal holes and active regions using a combination of in situ and remote sensing observations. For coronal holes, a 50% increase in temperature from 0.8 to 1.2 MK is associated with a tripling of the coronal mass flux. This trend is maintained within active regions at temperatures over 2 MK, with a four-fold increase in temperature corresponding to a 200-fold increase in coronal mass flux.
| Type: | Article |
|---|---|
| Title: | Sensitivity of solar wind mass flux to coronal temperature |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1051/0004-6361/202039789 |
| Publisher version: | http://dx.doi.org/10.1051/0004-6361/202039789 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Sun: corona, Sun: heliosphere, solar wind, stars: winds, outflows |
| 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 Physics and Astronomy 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/10120736 |
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