GT- We propose to observe three AGN which all have very strong EUV components,but are otherwise quite different in terms of the implications that theiroptical to soft X-ray spectra represent for models of the .big bump. (theoptical to soft X-ray component which incorporates the optical/UV big blue bumpand the soft X-ray excess). REJ1034+396 (z=0.04) is a narrow-line Seyfert 1galaxy whose BBB temperature is unusually high (kTeffvirgul100eV). In addition, the 2-10keV spectrum measured by ASCA is unusually soft with an energy index,alpha=1.6. E1346+266 is a narrow-line quasar (z=0.92) and has the strongest,softest X-ray spectrum identified to date. In REJ2248-511, the big bump has arelatively low temperature but shows large flux variability with time.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2000-10-26T02:29:27Z/2003-01-14T09:26:15Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Prof Keith Mason, 2004, 'X-ray observations of EUV-bright AGN', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0mojim5
