| Proposal ID | 083048 |
| Title | THE HIGH-ENERGY CUT-OFF IN HIGH-Z/HIGH-L QSOS |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0830480101 |
| DOI | https://doi.org/10.5270/esa-2cg9cxd |
| Principal Investigator, PI | Dr Giorgio Lanzuisi |
| Abstract | We propose NuSTAR observations of two bright (FX>5 10^-13 cgs, LX>10^46 erg/s)radio-quiet QSOs at z>2, plus short XMM exposures for each of them: our totaltime request is 320k NuSTAR and 70ks XMM. By looking at rest-frame energies upto 300 keV, our goal is to measure unambiguously the presence of spectralcut-offs at rest-frame energies up to E c=500 keV. This is not possible forlocal targets, where NuSTAR is just sensitive to E c<250 keV. The two brightestsources of a sample of four have been successfully observed in Cycle 3. Theseobservations allowed to measure for the first time E c in distant, luminousQSOs. The proposed observations will allow to build a a small but unique sampleof high-z, high-LX QSOs with accurate Ec measurements, to test current coronal models. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-01-14T11:07:23Z/2019-04-24T07:00:23Z |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2020-05-20T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "ec measurements", "plus short xmm", "XMM", "energy cut", "coronal models", "spectral cut offs", "320k nustar", "lx qsos", "rest frame energies", "total time", "NuSTAR", "luminous qsos", "bright fx", "radio quiet qsos", "local targets", "brightest sources" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Giorgio Lanzuisi, 2020, 'THE HIGH-ENERGY CUT-OFF IN HIGH-Z/HIGH-L QSOS', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-2cg9cxd |