The space weather experienced by exoplanets is dictated by conditions present inthe corona of the star. X-ray observations measure the coronal base density,while low- frequency radio emission traces higher, more tenuous coronal layers.We have recently achieved the first low-frequency detections of M dwarfs, whichwe interpret as evidence of star-exoplanet interactions. However, such aninterpretation relies heavily on the measurements of the coronal base densityfrom X-rays. Three of our low-frequency detected M dwarfs are not detected byROSAT. The proposed observations will allow us to determine whether the radioemission is originating in a star-like atmosphere, where the emitting electronsare embedded in a corona, or from a planet-like magnetosphere.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2020-08-09T22:51:52Z/2020-11-06T20:04:44Z
Version
18.02_20200221_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.
European Space Agency, Dr Joseph Callingham, 2021, 'Extrasolar space weather\: X-ray properties of low radio frequency M dwarfs', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-y3wpdtb
