A dataset provided by the European Space Agency

Name 074384
Title Challenging the rotation-activity paradigm


DOI https://doi.org/10.5270/esa-hdx86cb
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 No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-04-21T03:32:48Z/2014-06-06T16:52:36Z
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 2015-06-26T22:00:00Z
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