| Name | 076418 |
| Title | Tracing the accretion disk using Fe lines and kHz QPOs |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0764180201 |
| DOI | https://doi.org/10.5270/esa-1fddync |
| Author | European Space Agency |
| Description | Fe K- lines have now been detected in about half a dozen neutron-star accreting X-ray binaries. Under the commonly accepted interpretation, these lines can be used to set tight constrains on the accretion disk geometry and on the radius of the neutron star. Using simultaneous XMM-Newton/RXTE observations of 4U 1636-53, we have recently shown that the inner disc radius deduced from the characteristic frequency of the timing features and from the Fe-line profile does not change consistently with time, contradicting the expected scenario. It is intriguing that the Fe line appears to behave differently. Here we propose to observe this system with XMM-Newton three times for 30 ks, simultaneously with NuStar observations. |
| Publication | No observations found associated with the current proposal |
| Instrument | EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2015-08-25T07:14:40Z/2015-09-18T18:06:05Z |
| 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 | 2016-10-06T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2016, Tracing The Accretion Disk Using Fe Lines And Khz Qpos, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-1fddync |