| Proposal ID | 040188 |
| Title | Activity cycles in solar-type stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0401880601 |
| DOI | https://doi.org/10.5270/esa-aa236x8 |
| Principal Investigator, PI | Mr Jan Robrade |
| Abstract | We propose to continue the ongoing long-term monitoring program of a sample ofsolar-type stars to search for cyclic behavior, analogous to the one observedfor the Sun, in their X-ray emission. These stars have moderate levels ofactivity and are thus true solar analogs. XMM-Newton makes it possible, forthe first time, to efficiently monitor the low-activity, cyclic stars and toeffectively study the characteristics of the activity cycles on stars other thanthe Sun. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-10-29T23:47:25Z/2007-05-04T18:49:26Z |
| Version | 21.51_20241115_1113 |
| 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 | 2008-05-31T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "solar type stars", "XMM-Newton", "moderate levels", "activity cycles", "cyclic stars", "XMM", "xmm newton makes", "xray emission", "low activity" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Jan Robrade, 2008, 'Activity cycles in solar-type stars', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-aa236x8 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |