|Title||MEASURING CORONAL PROPERTIES OF TWO HIGH REDSHIFT, LUMINOUS QUASARS|
|Author||Dr Guido Risaliti|
|Description||We propose NuSTAR and XMM joint observations of two quasars at z=2.36 and z=3.37, with the main goal of measuring the high-energy cutoffs of their X-ray emission. Only recently the high S-N NuSTAR spectra allowed precise measurements of these parameters for the brightest local AGN, finding cutoff energies above 100virgulkeV. Here we demonstrate that the same estimates are possible also for the brightest high-z quasars, if (and only if) the whole 0.5-80virgulkeV band is observed. The scientific outcome is of great value: we will be able to test whether the same physical conditions hold in quasars at luminosities > 100 times higher than those probed so far in the nearby Universe. An important additional scientific goal will be the study of the X-ray absorption by the intervening IGM.|
|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, 2018-03-29T22:00:00Z, 079082, 17.56_20190403_1200. https://doi.org/10.5270/esa-q0l07ql|