| Name | 082207 |
| Title | X-rays Beyond the Wind Dividing Line |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0822070101 |
| DOI | https://doi.org/10.5270/esa-cn5fcur |
| Author | Dr Julian David Alvarado-Gomez |
| Description | Despite their fundamental role for the evolution of late-type stellar systems, mass loss rates from winds are only known for 10 Sun-like stars. Two regimes have been proposed separated by a wind dividing line: winds increasing in intensity with increasing activity up to moderate activity levels; and, based on just one measurement, much weaker winds for the most active stars. We propose observations of two active Sun-like stars to determine their X-ray fluxes and activity, and confirm their location beyond the wind dividing line. These X-ray data will lay the foundation for interpreting the results of our cycle 25 HST programme to estimate their stellar wind mass loss rates, test predictions from data-driven simulations, and illuminate the elusive relationship between coronal and wind energy output. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-09-08T15:15:19Z/2019-02-13T09:15:19Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2020-03-13T23:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2020-03-13T23:00:00Z, 082207, 17.56_20190403_1200. https://doi.org/10.5270/esa-cn5fcur |