| Proposal ID | 020572 |
| Title | THE CORONAE OF EXTREMELY INACTIVE (MAUNDER MINIMUM?) STARS |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0205720101 |
| DOI | https://doi.org/10.5270/esa-6mb3f06 |
| Principal Investigator, PI | Dr STEVEN SAAR |
| Abstract | We propose to study the weak coronae of flat activity stars - objects withvery low, nearly constant chromospheric emission. There is evidence that in manycases, these coronae are powered by magnetic fields from the residual turbulentdynamo left while the stars cyclic dynamo is in a temporary Maunder-likemagnetic minimum. These stars permit us to 1) study the weakest and likely leastcomplex coronae, 2) investigate the coronal product of a turbulent dynamo in asolar mass star, and 3) explore (by proxy) the properties of the solar corona ina Maunder-like minimum. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-01-22T21:54:48Z/2004-01-23T15:35:02Z |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2005-02-15T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "solar corona", "magnetic fields", "temporary maunder", "coronal product", "turbulent dynamo", "magnetic minimum", "solar mass star", "cyclic dynamo", "flat activity", "stars permit", "weak coronae", "inactive maunder minimum", "complex coronae", "stars objects" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr STEVEN SAAR, 2005, 'THE CORONAE OF EXTREMELY INACTIVE (MAUNDER MINIMUM?) STARS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-6mb3f06 |