|Title||X-Ray spectroscopy Observations of Hard Broad-Line QSOs detected in the ASCA Lar|
|Author||Dr Yoshihiro Uneda|
|Description||We propose X-ray spectroscopic observations of broad-line (type-I) QSOs with hard X-ray spectra in a hard-band selected sample of the ASCA Large Sky Survey. The purpose is to study the origin of the hardness of their X-ray spectra to reveal the nature of this new polulation of sources, which could contribute significantly to the hard X-ray background instead of narrow-line (type-II) AGNs. This study is very important for understanding of the origin of the CXB, and for a test of the standard AGN synthesis models based on the unified scheme of the AGNs.|
|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, 2004-02-06T00:00:00Z, 013594, 17.56_20190403_1200. https://doi.org/10.5270/esa-kq9ed0l|