| Name | 074223 |
| Title | Investigating a Dynamo Bimodality in Fully Convective Stars with X-rays |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0742230101 |
| DOI | https://doi.org/10.5270/esa-swlylj7 |
| Author | European Space Agency |
| Description | Recent observations have led to a proposed new paradigm in which fast-rotating lowmass stars host magnetic dynamos that operate in distinct strong and weak modes; if true, there are large implications for exoplanets. Coronal X-ray data hint at this effect, but no detailed studies have been done. We propose an 80virgulks investigation of four nearby cool dwarfs, two from each dynamo mode. All are bright X-ray emitters. The two dynamo modes are associated with different levels of variability, and XMM-Newton.s large collecting area will allow a sensitive search for an X-ray manifestation of this. We will also compare abundances and emission measures using CCD and grating spectra. Our data will test this new paradigm and may provide an important new tool for investigating it. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-06-11T23:56:04Z/2014-10-11T00:42:26Z |
| 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 | 2015-10-29T23:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2015, Investigating A Dynamo Bimodality In Fully Convective Stars With X-Rays, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-swlylj7 |