| Proposal ID | 084276 |
| Title | Simultaneous Disc and Corona Reverberation Mapping in AGN Mrk 335 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0842760201 |
| DOI | https://doi.org/10.57780/esa-0s00dhu |
| Principal Investigator, PI | Dr Erin Kara |
| Abstract | X-ray reverberation shows that the corona is compact, within 10 gravitationalradii of the central black hole, and irradiates a disc that extends down to ornear the ISCO. However, these results appear in tension with recent Swift discreverberation results, where the time delay between X-rays and UV/optical ismuch larger than expected from the standard reprocessing model in which acompact corona irradiates and thermalizes a thin accretion disc. In order toexplain these disc reverberation results, two suggestions have been made:either (1) the thin disc is truncated with a hot inner flow or (2) absorptionand scattering from the broad line region affect the time lag measurements.Neither of these two scenarios can be properly tested with Swift alone. XMM-Newton is required. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2021-06-14T06:03:03Z/2021-06-23T07:32:46Z |
| Version | 19.16_20210326_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 | 2022-07-10T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "agn mrk 335", "XMM-Newton", "hot inner flow", "central black hole", "compact corona irradiates", "time delay", "xmm newton", "swift disc reverberation", "thin accretion disc", "thin disc", "xray reverberation", "time lag measurements", "gravitational radii", "disc reverberation", "properly tested", "standard reprocessing model", "corona reverberation mapping" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Erin Kara, 2022, 'Simultaneous Disc and Corona Reverberation Mapping in AGN Mrk 335', 19.16_20210326_1200, European Space Agency, https://doi.org/10.57780/esa-0s00dhu |