A dataset provided by the European Space Agency

Proposal ID 020572
Title THE CORONAE OF EXTREMELY INACTIVE (MAUNDER MINIMUM?) STARS
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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 star.s 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
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
Keywords "complex coronae", "solar corona", "magnetic fields", "weak coronae", "magnetic minimum", "stars objects", "coronal product", "inactive maunder minimum", "turbulent dynamo", "solar mass star", "temporary maunder", "flat activity", "stars permit", "cyclic dynamo"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr STEVEN SAAR, 2005, 'THE CORONAE OF EXTREMELY INACTIVE openParMAUNDER MINIMUMquestionMarkclosePar STARS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-6mb3f06