| Proposal ID | 069284 |
| Title | The first experiment of accretion disc tomography in AGNs |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0692840201 |
| DOI | https://doi.org/10.5270/esa-yagp2dx |
| Principal Investigator, PI | Dr Guido Risaliti |
| Abstract | We propose four one-orbit observations of the AGN in NGC~1365, with the main aimof measuring the spectral variations during an eclipse. This source showedextraordinary variability in the past observations, indicating a highprobability of catching an eclipse by a Compton-thick cloud in the proposedobservation time. The differences in the shape of the iron broad emission lineat different phases of the eclipse would be a decisive proof of the relativisticeffects on this line due to the strong gravity and fast orbital motion of theinner part of the accretion disc. In addition to this unique experiment, thespectral complexity of NGC~1365 (with the highest S/N detection of ironabsorption lines in AGNs) makes it the ideal target for a deep legacy observation. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2012-07-25T23:29:12Z/2013-02-14T00:22:55Z |
| 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 | 2014-02-28T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "compton thick cloud", "deep ``", "extraordinary variability", "spectral variations", "spectral complexity", "relativistic effects", "iron absorption lines", "accretion disc tomography", "NGC", "fast orbital motion", "decisive proof", "agns makes", "ideal target", "accretion disc" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Guido Risaliti, 2014, 'The first experiment of accretion disc tomography in AGNs', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yagp2dx |