|Title||The Fraction of Heavily-Obscured AGN Amongst Diffuse-Merger ULIRGs|
|Author||Dr Ezequiel Treister|
|Description||As was recently established, the energy source in Ultraluminous Infrared Galaxies (ULIRGs) depends on their interaction phase. AGN have been found in the latest stages, while they are mostly not seen in the early merger phases. We propose to use XMM-Newton observations to constrain the fraction of recently-triggered AGN in the diffuse merger stage. We will look for a luminous hard (>3 keV) X-ray power-law (indicative of AGN activity not affected by obscuration) in a sample of 5 ULIRGs selected from the IRAS 1 Jy sample that do not show any AGN characteristic so far. These sources are excellent study cases for the black hole-galaxy evolution paradigm. These proposed snapshot observations will enable us to perform more extensive X-ray follow-up studies with Chandra and XMM.|
|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, 2013-02-16T00:00:00Z, 067290, 17.56_20190403_1200. https://doi.org/10.5270/esa-ax05shn|