| Proposal ID | 084076 |
| Title | HD110432: the most extreme case amongst gamma-Cas X-ray stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840760201 |
| DOI | https://doi.org/10.5270/esa-jwhwciw |
| Principal Investigator, PI | Dr Raimundo Lopes de Oliveira |
| Abstract | 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 ofreflection 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? |
| Publications | No publications found for current proposal! |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2020-08-16T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "photometric characterization", "accreting white dwarfs", "xmm newton", "bigger xray mysteries", "multiple discrete plasma", "gamma cas", "gamma cas stars", "`` reflection ''", "star hd 110432", "massive stars \:", "HD110432", "'' time interval", "XMM-Newton", "cooling plasma scenarios", "NuSTAR", "`` drop", "cold material", "broad energy range", "hard flux", "XMM", "hd110432 \:" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | 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 |