| Proposal ID | 001244 |
| Title | The X-ray Baldwin Effect: z=2 Fe-K and Compton Humps as Ionized Disk Diagnostics |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0012440101 |
| DOI | https://doi.org/10.5270/esa-p9j9boh |
| Principal Investigator, PI | Dr Martin Elvis |
| Abstract | By observing 4 bright radio quiet z~2 quasars we propose to test the X-ray Baldwin Effect: that the relativistically broadened Fe-K line becomes weakeras AGNs become more luminous. This needs to be done with radio-quiet quasars to avoid beaming dilution. We will also test the proposed explanation of thiseffect: that the accretion disk becomes fully ionized. this can be done by measuring the Compton hump relative to the Fe-K line, since Compton scatteringoperates independent of ionization. To measure the Compton hump with XMM EPIC requires z~2. The 4 proposed quasars have exposure times chosen to give 3sigmalimits 1/10 of the low luminosity values, assuring an unambiguous result. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-01-14T23:14:51Z/2001-05-24T18:21:18Z |
| 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 | 2003-01-05T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "baldwin effect ':", "accretion disk", "XMM", "avoid beaming dilution", "EPIC", "compton humps", "compton hump", "xmm epic", "relativistically broadened fe", "radio quiet quasars", "ionized disk diagnostics", "low luminosity values", "compton hump relative", "compton scattering operates", "xray baldwin effect", "3sigma limits" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Martin Elvis, 2003, 'The X-ray Baldwin Effect: z=2 Fe-K and Compton Humps as Ionized Disk Diagnostics', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-p9j9boh |