We propose to conduct a spectral and photometric characterization of the gammaCas-like star HD 110432 from a broad energy range. The aims are to confront themultiple-discrete plasma and the cooling plasma scenarios, and look for signs of..reflection. of X-rays from a cold material. In addition, the investigationwill allow us to check for presence of flare-like events in high energies andfor extended ..drop-off. time interval in the hard flux. This investigationrequires a simultaneous campaign with the XMM-Newton (15 ks) and NuSTAR (100 ks)satelites. The ultimate goal is to contribute to solve one of the bigger X-raymysteries in massive stars\: the origin of the X-rays of gamma Cas stars;magnetic Be stars or accreting white dwarfs?
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2019-07-21T09:28:19Z/2019-07-21T14:11:39Z
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 Raimundo Lopes de Oliveira, 2020, 'HD110432\: the most extreme case amongst gamma-Cas X-ray stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-jwhwciw
