| Name | 050035 |
| Title | Soft X-Ray Millisecond Variability from an Accreting Neutron Star |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0500350301 |
| DOI | https://doi.org/10.5270/esa-mnshoir |
| Author | Prof Philip Kaaret |
| Description | The discovery of millisecond variability in the hard (2.5-30 keV) emission of neutron-star low-mass x-ray binaries opened a new window on the study of the accretion flow and the effects of strong gravitational fields in these systems. We propose to use XMM-Newton to search for millisecond variability in the soft x-ray band (0.4-2.5 keV), which is inaccessible to RXTE. We request two observations of 4U 1636-536 which has produces strong and narrow kHz quasiperiodic oscillations (QPOs) in hard x-rays and is in the continuous viewing zone of the Rossi X-Ray Timing Explorer. These observations should place important constraints on models of the kHz QPOs. |
| Publication | No observations found associated with the current proposal |
| Instrument | EPN, RGS1, RGS2 |
| Temporal Coverage | 2007-09-28T15:24:44Z/2008-02-27T15:01:05Z |
| 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 | 2009-05-29T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Philip Kaaret, 2009, 050035, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-mnshoir |