|Title||X-ray spectroscopy of the BL Lac H1426+428|
|Author||Dr Bert Brinkman|
|Description||GT - We propose to measure the parameters of the absorption feature at virgul600 eV originally detected by BBXRT in H1426+428. Sharp absorption features appear to be common in the soft X-ray spectra of BL Lac objects, as shown by several detections made with BBXRT: the lines are generally attributed to blue-shifted Lyman alpha OVIII resonance absorption, implying rapid mass outflow from the active nucleus. However the exact nature and origin of these features is still unclear. The RGS will provide an accurate measure of the line energy and width, of the column density and the ionisation level of the gas, ultimately giving clues to the origin of the gas itself.|
|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, 2002-12-06T00:00:00Z, 011185, 17.56_20190403_1200. https://doi.org/10.5270/esa-vipokn2|