|Title||Diagnostics of Intermediate Redshift Galaxies using Background Bl Lacs|
|Author||Prof Brian McBreen|
|Description||We propose to use the featureless X-ray spectra of background BL Lacs as back-lighting continua to reveal absorption edges due to elements in the interstellar medium of intervening galaxies at intermediate redshifts and hence measure the abundances of these elements. Three BL Lacs have been carefully selected and are excellent candidates for EPIC on XMM. Redshifted absorption lines are clearly visible in the simulated spectra, demonstrating the feasibility of using this technique with XMM. We have observed two of the sources, MS0205+3509 and B2 1308+326 with ASCA through the ESA-Japanese program. However, the sensitivity of XMM is required for the program presented here.|
|Publication||No observations found associated with the current proposal|
|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, 2003-02-27T00:00:00Z, 008414, 17.56_20190403_1200. https://doi.org/10.5270/esa-tqirkgl|