|Title||THE CORONAE OF EXTREMELY INACTIVE (MAUNDER MINIMUM?) STARS|
|Author||Dr STEVEN SAAR|
|Description||We propose to study the weak coronae of "flat activity" stars - objects with very low, nearly constant chromospheric emission. There is evidence that in many cases, these coronae are powered by magnetic fields from the residual turbulent dynamo left while the star.s cyclic dynamo is in a temporary Maunder-like magnetic minimum. These stars permit us to 1) study the weakest and likely least complex coronae, 2) investigate the coronal product of a turbulent dynamo in a solar mass star, and 3) explore (by proxy) the properties of the solar corona in a Maunder-like minimum.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2005-02-15T00:00:00Z, 020572, 17.56_20190403_1200. https://doi.org/10.5270/esa-6mb3f06|