A dataset provided by the European Space Agency

Name 076437
Title Measuring coronal properties of a high redshift, luminous quasar


DOI https://doi.org/10.5270/esa-57rifwn
Author Dr Guido Risaliti
Description We propose XMM and NuSTAR joint observations of a z=1.77 quasar, with the goal of measuring its high-energy cutoff and hence, its coronal temperature and optical depth. Only recently high S-N 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 for the brightest high-z quasars, if both XMM and NuSTAR are employed. The scientific outcome is of great value: we will test whether the same physical conditions hold in quasars at luminosities three orders of magnitude higher than those probed so far in the nearby Universe. An important additional goal will be the study of the X-ray absorption, both at the source rest frame and in the intervening intergalactic medium.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-11-06T13:50:11Z/2015-11-07T13:43:31Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2016-11-30T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2016-11-30T23:00:00Z, 076437, 17.56_20190403_1200. https://doi.org/10.5270/esa-57rifwn