| Proposal ID | 090232 |
| Title | Probing the inner accretion flow of a luminous highly variable Seyfert 1 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0902320401 |
| DOI | https://doi.org/10.57780/esa-tg5lwiy |
| Principal Investigator, PI | Dr Elias Kammoun |
| Abstract | Changing-look AGN (CLAGN) are one of the most mysterious categories of AGN,showing strong variability and sudden state changes. Our search for possibleCLAGN candidates led to the discovery of 2MASXJ0817. The source is affected by avery small amount of intrinsic absorption and exhibits long-term X-rayvariability by a factor of 10 at least. The strong spectral changes in thesource are associated with intrinsic changes only (no absorption-inducedvariability was identified). We propose to monitor the source during AO21, witha total of 240 ks in a way that will allow us to probe changes in the inneraccretion flow on dynamical, thermal, and viscous timescales, ranging from a fewks up to a year. The proposed campaign will shed light on the nature of the strong variability in this source. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2023-04-19T18:31:34Z/2023-04-20T07:59:44Z |
| Version | 20.10_20230417_1156 |
| 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 | 2024-05-16T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | XMM-Newton, OM, RGS, EPIC, X-ray, Multi-Mirror, SAS |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Elias Kammoun, 2024, 'Probing the inner accretion flow of a luminous highly variable Seyfert 1', 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-tg5lwiy |