| Proposal ID | 082207 |
| Title | X-rays Beyond the Wind Dividing Line |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0822070101 |
| DOI | https://doi.org/10.5270/esa-cn5fcur |
| Principal Investigator, PI | Dr Julian David Alvarado-Gomez |
| Abstract | 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 regimeshave been proposed separated by a wind dividing line: winds increasing inintensity with increasing activity up to moderate activity levels; and, based onjust one measurement, much weaker winds for the most active stars. We proposeobservations of two active Sun-like stars to determine their X-ray fluxes andactivity, and confirm their location beyond the wind dividing line. These X-raydata will lay the foundation for interpreting the results of our cycle 25 HSTprogramme to estimate their stellar wind mass loss rates, test predictions fromdata-driven simulations, and illuminate the elusive relationship between coronal and wind energy output. |
| Publications |
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| 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 Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 |
| Last Update | 2025-01-27 |
| Keywords | "mass loss rates", "xray fluxes", "xray data", "fundamental role", "active stars", "moderate activity levels", "hst programme", "wind dividing line", "wind energy output", "elusive relationship", "active sun", "x rays", "test predictions", "weaker winds", "data driven simulations", "HST" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Julian David Alvarado-Gomez, 2020, 'X-rays Beyond the Wind Dividing Line', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-cn5fcur |