We propose to continue our XMM-Newton monitoring of the young solar analogepsilon Eri started in AO 14. So far only one X-ray cycle has been found on astar resembling the young Sun, iota Hor (600Myr, SpT G0V). Its X-ray cycle isremarkably one of the shortest dynamo cycles known to date (1.6 yrs), the onlyX-ray cycle identified so far on a star with high chromospheric activity level,and episodically interrupted. Our target, Epsilon Eri resembles iota Hor (youngage, short calcium cycle, high activity) and our observations aim atestablishing whether the peculiar features of iota Hor.s X-ray cycle arecharacteristic for such young stars. We ask for two snapshots in AO17, for atotal of 10ksec to be combined with our previous data and the continued Ca II monitoring program of epsilon Eri.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2018-07-20T02:15:37Z/2019-01-19T19:53:02Z
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.
European Space Agency, Prof Beate Stelzer, 2020, 'Properties of X-ray activity cycles on young solar-like stars\: epsilon Eridanae', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-eazkxlo
