In our WISE/SDSS-selected sample of hyperluminous (Lbol > 10^47 erg/s) quasars(WISSH) we are finding a sizable fraction of sources with strongly blueshiftedCIV emission lines (v_civ < -2000 km/s) and up to 1.5 dex lower X-ray luminosity(L_X) compared to that reported for normal quasars. Based on a sub-sample of 13sources, we find that L_X and v_civ significantly correlate. No relation isfound at other bands. Furthermore, at low L_X, our constraints on Gamma and N_Hare insufficient to verify a dependence on v_CIV. We propose for XMMobservations to perform a complete X-ray coverage for the remaining 9 WISSH QSOswith measured v_civ. These will allow a refined investigation enabling us todiscriminate between competing models for the origin of these sources.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2020-11-24T16:40:14Z/2021-01-07T19:22:33Z
Version
18.02_20200221_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, Dr Luca Zappacosta, 2022, 'Shedding light on the X-ray weakness of the most luminous quasars', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-citsu3t
