| Name | 084099 |
| Title | Tracking the Neutron Star ULX NGC 7793 P13 with XMM-Newton to Measure its Orbit |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840990101 |
| DOI | https://doi.org/10.5270/esa-ahmf4d2 |
| Author | Dr Felix Fuerst |
| Description | Following a series of remarkable discoveries, we now know that some ultra-luminous X-ray sources (ULXs) are actually powered by apparently super-Eddington neutron star accretors. So far, five such sources have been identified through either their pulsations or the discovery of cyclotron lines. NGC 7793 P13 stands out among them as the source with the most easily measurable pulse period and the only ULX pulsar for which the companion star was classified. Here we propose two short XMM-Newton observations of P13 to follow-up on our successful campaign in AO 16 and AO 17, to track the evolution of the pulse period and to monitor the X- ray spectrum. The timing results will allow us to improve the orbital ephemeris and investigate a possible super-orbital orbital on the order of 1500 d. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-05-16T23:02:55Z/2019-05-17T11:57:55Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2020-06-18T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2020-06-18T22:00:00Z, 084099, 17.56_20190403_1200. https://doi.org/10.5270/esa-ahmf4d2 |