As a decisive experiment to establish whether particle acceleration operates inmagnetic hot stars, we propose a joint XMM and NuSTAR observation of the B2Vstar HR7355. Non-thermal radio emissions have already been detected from HR7355.Our advanced 3-D models predict rotationally modulated non-thermal X-rayemission from polar aurorae. XMM and NuSTAR observations are requested tovalidate this prediction. Detecting X-ray aurorae will overturn the hithertoaccepted theory of X-ray production in early-type magnetic stars. The new datawill also provide important insights into the auroral mechanism operating inastronomical objects, from planets to massive stars.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2018-10-01T09:40:40Z/2018-10-02T02:52:20Z
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.
European Space Agency, Dr Lidia Oskinova, 2019, 'X-ray aurora of the early magnetic B-type star HR 7355', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pyzbchx
