| Name | 014981 |
| Title | Study of the Iron Line and Low Energy Features in 4U 1728-34 with XMM-Newton |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0149810101 |
| DOI | https://doi.org/10.5270/esa-s97apfw |
| Author | European Space Agency |
| Description | We propose a 30 ks XMM observation of 4U 1728-34 to perform a detailed study of the iron K-alpha line and other low energy features. This source shows a broad (virgul1 keV FWHM) iron line: several hypotheses can be proposed to explain the line width (e.g. relativistic and Doppler effects in an accretion disk, Compton scattering, line-blending), and we expect that XMM will be able to resolve the complex line shape and to constrain the various models proposed. These kind of sources are also expected to be rich of emission lines and absorption edges at low energy (below virgul2 keV), because of the presence of a photoionized accretion disk corona (ADC). These low energy features are an important diagnostic tool for the physical conditions of the emitting regions. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, RGS1, RGS2 |
| Temporal Coverage | 2002-10-03T22:05:51Z/2002-10-04T05:55:25Z |
| 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 | 2003-11-07T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2003, Study Of The Iron Line And Low Energy Features In 4U 1728-34 With Xmm-Newton, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-s97apfw |