|Title||Mapping the chemistry of interstellar dust through the halo of 4U1820-30|
|Author||Dr Elisa Costantini|
|Description||We propose to observe the bright X-ray source 4U1820-30 as optimal candidate to map the chemistry of the diffuse Galactic Interstellar Medium (ISM). Using the unique XMM-Newton performances, we will study the two phases of ISM (gas and dust) focusing on O, Fe, Mg, and Si. The observation of 4U1820-30 will provide a robust and quantitative estimate on how homogeneous the distribution of these elements are in the diffuse ISM. The simultaneous analysis of scattering and absorption has been already successful for another XMM-Newton target (Cyg X-2, Costantini et al. 2005), unveiling for the first time features from the ID constituents.|
|Publication||XMM-Newton observation of 4U 1820-30. Broad band spectrum and the contribution of the cold interstellar medium . Costantini, E., Pinto, C., et all. . A&A . 539-32 . 2012 . 2012A&A...539A..32C ,
The Second Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars . Abdo, A. A., Ajello, M., et all. . ApJS . 208-17 . 2013 . 2013ApJS..208...17A ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2010-04-22T00:00:00Z, 055134, 17.56_20190403_1200. https://doi.org/10.5270/esa-4yl680b|