The present program to study for the first time solar-like cycles in the X-rayemission of stars similar to our Sun has been ongoing since XMM s AO-1. Fivetargets in three stellar systems have been monitored since 2001, providing forthe first time clear evidence of long-term cycles in the X-ray luminosity ofnormal stars, with variations in X-ray luminosity of up to an order ofmagnitude. We request continuation of the ongoing monitoring program into XMMAO-10, needed to progress toward full characterization of the coronal cycle forour targets.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2011-11-02T00:53:03Z/2012-05-07T15:56:21Z
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, Dr Fabio Favata, 2013, 'Coronal activity cycles in solar analog stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v84qo2x
