| Name | 080187 |
| Title | Coronal activity cycles in solar analog stars |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801870301 |
| DOI | https://doi.org/10.5270/esa-ckryrvu |
| Author | Dr Fabio Favata |
| Description | We propose to pursue a long-term monitoring program of a selection of solar-type stars all of which show clear to the solar cycle -- in their CaII flux, with the aim of detecting and studying, for the first time in X-rays, the presence of activity cycles in stars other than the Sun. Thus far only very active stars -- not show CaII cycles but only irregular variability -- have monitored with a sufficient time base in X-rays, with no evidence for cycles. XMM makes it possible, for the first time, to efficiently monitor the low-activity, cyclic stars which are the true analogues of thus to effectively constrain the characteristics of the cycles on stars other than the Sun. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2017-05-01T05:16:54Z/2018-04-27T01:07:33Z |
| 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 | 2019-05-21T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2019-05-21T22:00:00Z, 080187, 17.56_20190403_1200. https://doi.org/10.5270/esa-ckryrvu |