|A relativistic iron line in the X-ray spectrum of the atoll source 4U 1705-44?
|Dr Tiziana Di Salvo
|We propose a ToO (triggered) observation with XMM-Newton of the atoll source 4U 1705-44 during a soft state. A Chandra observation of this source clearly indicate the presence of a broad (sigma virgul 0.7 keV) iron line. Both a relativistic disc line and a thermal Comptonization broadening fit well the line profile. The superior sensitivity at the iron line energy of XMM-Newton is needed to give a definite answer to the problem of the origin of the broad iron line.
|No observations found associated with the current proposal
|EMOS1, EPN, OM, RGS1, RGS2
|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.
|Publisher And Registrant
|European Space Agency
|European Space Agency, 2009, 055127, 17.56_20190403_1200. https://doi.org/10.5270/esa-p4chn93