| 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 |
|
| 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 | 2026-03-04 |
| Keywords | "standard reprocessing model", "thin accretion disc", "XMM", "disc reverberation", "agn mrk 335", "xmm newton", "thin disc", "swift disc reverberation", "xray reverberation", "XMM-Newton", "properly tested", "compact corona irradiates", "gravitational radii", "corona reverberation mapping", "central black hole", "hot inner flow", "time lag measurements", "time delay" |
| 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 |