|Title||Kepler 63: a young star as an enrichment of X-ray activity cycle studies|
|Author||Mrs Martina Coffaro|
|Description||Chromospheric activity cycles are often found in old stars, but their coronal X- ray counterparts have been difficult to catch. Thanks to XMM-Newton, X-ray cycles have been detected in four stars, moving forward an exploration of the parameters space of dynamo cycles (activity level, cycle length, etc.). Two stars with known X-ray activity cycles are relatively young (500Myr), rising the question at what age and activity level X-ray cycles set in. We propose here 4 short (6ksec) observations of Kepler63. It is younger (250Myr), has higher activity (logLx=29.02[erg-s]) and a shorter cycle (1.27yr) that the previous targets for such dedicated studies. A single XMM-Newton observing season can cover 1-2 of a full cycle with short snapshots.|
|Publication||No observations found associated with the current proposal|
|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, 2021-03-19T00:00:00Z, 084123, 18.02_20200221_1200. https://doi.org/10.57780/esa-9j946na|