|Title||Challenging the rotation-activity paradigm|
|Author||Dr Stefan Czesla|
|Description||We propose to obtain XMM-Newton snapshots of a sample of five G-type superflare stars spanning a wide range of rotation periods identified by the Kepler satellite. While the strongest solar flares release about 10^32 erg, Kepler observed G-type dwarfs producing white-light flares releasing up to four orders of magnitude more energy---eruptions capable of inflicting serious damage on the equilibrium of a planetary atmosphere. Curiously, many of these superflare stars are apparently slow rotators. Thus, they challenge the canonical rotation-activity relation. The analysis of the coronal X-ray emission from our sample of superflare stars with highly diverse rotation periods will allow us to test the activity-rotation paradigm in these intriguing stars.|
|Publication||The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Dark matter distribution in X-ray luminous galaxy clusters with Emergent Gravity . Ettori, S., Ghirardini, V., et all. . MNRAS . 470-29 . 2017 . 2017MNRAS.470L..29E ,
An improved age-activity relationship for cool stars older than a gigayear . Booth, R. S., Poppenhaeger, K., et all. . MNRAS . 471-1012 . 2017 . 2017MNRAS.471.1012B ,
The XMM Cluster Outskirts Project (X-COP): Thermodynamic properties of the intracluster medium out to R200 in Abell 2319 . Ghirardini, V., Ettori, S., et all. . A&A . 614-7 . 2018 . 2018A&A...614A...7G ,
Thermodynamic profiles of galaxy clusters from a joint X-ray-SZ analysis . Shitanishi, Jennifer A., Pierpaoli, Elena, et all. . MNRAS . 481-749 . 2018 . 2018MNRAS.481..749S ,
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2015-06-26T22:00:00Z, 074384, 17.56_20190403_1200. https://doi.org/10.5270/esa-hdx86cb|