A dataset provided by the European Space Agency

Proposal ID 076349
Title Challenging the rotation-activity paradigm II
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DOI https://doi.org/10.5270/esa-f5vodyl
Principal Investigator, PI Dr Stefan Czesla
Abstract We propose to obtain XMM-Newton snapshots of seven of the most slowly rotatingG-type superflare stars identified by the Kepler satellite to test whether theyadhere to the rotation-activity paradigm. While the strongest flares observed onthe Sun release about 1e32 erg, Kepler observed G-type dwarfs that producewhite-light flares releasing up to four orders of magnitude more energy.Curiously, many of these superflare stars are apparently slow rotators.Notwithstanding, our recent XMM-Newton campaign showed that these stars can beextremely bright X-ray sources (about 1e30 erg/s). Consequently, we identifiedthe slowest rotators among the superflare stars amenable to X-ray observationsto study their X-ray emission.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-09-13T00:12:51Z/2015-11-23T13:48:07Z
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 2016-12-14T23:00:00Z
Keywords "superflare stars", "slowly rotating", "1e32 erg", "XMM-Newton", "superflare stars amenable", "strongest flare", "apparently slow rotators", "1e30 erg", "rotation activity paradigm", "bright xray sources", "XMM", "xmm newton snapshots", "type dwarfs", "kepler satellite", "type superflare stars", "slowest rotators", "xmm newton campaign", "sun release", "xray emission"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Stefan Czesla, 2016, 'Challenging the rotation-activity paradigm II', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-f5vodyl