| Proposal ID | 082399 |
| Title | Probing clump accretion onto neutron stars with XMM-Newton |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0823990201 |
| DOI | https://doi.org/10.5270/esa-fkl3hla |
| Principal Investigator, PI | Dr Enrico Bozzo |
| Abstract | We propose to boost the current sample of flares observed with XMM-Newton fromthe confirmed Supergiant Fast X-ray Transients. Our recent milestone study ofall observations available so far proved that a statistical analysis of theseevent can be exploited to demonstrate that these events are triggered by clumpsin the supergiant wind and to probe the clumpy wind properties. However, thecurrent number of flares is still small and more observations are needed. Theseflares occur randomly at any time with a recurrence time of few ks (2-5 flaresexpected every 20 ks observation, on average). The unique abilities of XMMneeded for this study are the large effective area at soft X-rays and thepossibility of having a uninterrupted lightcurves. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-08-28T05:33:45Z/2019-04-07T14:36:59Z |
| 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 | 2020-05-08T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "uninterrupted lightcurves", "neutron stars", "supergiant wind", "clumpy wind properties", "xmm newton", "XMM-Newton", "flare occur randomly", "statistical analysis", "soft xray", "XMM", "recurrence time", "probing clump accretion" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Enrico Bozzo, 2020, 'Probing clump accretion onto neutron stars with XMM-Newton', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fkl3hla |