| Proposal ID | 091243 |
| Title | DECIPHERING EVOLUTION OF CHANGING-LOOK AGN NGC 3516 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0912430101 |
| DOI | https://doi.org/10.57780/esa-cutnpuh |
| Principal Investigator, PI | Dr Missagh Mehdipour |
| Abstract | Understanding the nature and origin of spectral variability provides us with keyinformation about the accretion-outflow mechanism in active galactic nuclei(AGN). Changing-look AGN show the most striking cases of spectral variability inAGN. NGC 3516 is a remarkable Seyfert-1 galaxy, which over the last decade hasundergone major optical-UV-X-ray spectral transformations, classifying it as achanging-look AGN. The extensive Swift monitoring of NGC 3516 shows that it iscurrently in a state of long-term transition between the extremely low-fluxstate and the historical high-flux state. The proposed joint NuSTAR (60 ks) andXMM-Newton (60 ks) observations of this transition state aim to gain newinsights into the mechanism of transition between the different states of the changing-look AGN. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-09-25T10:01:29Z/2022-09-27T21:57:27Z |
| Version | 20.08_20220509_1852 |
| 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 | 2023-10-22T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "xmm newton", "changing look agn", "key information", "accretion outflow mechanism", "XMM-Newton", "spectral variability", "NGC 3516", "ngc 3516", "extensive swift", "NuSTAR", "XMM", "low flux", "deciphering evolution", "term transition" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Missagh Mehdipour, 2023, 'DECIPHERING EVOLUTION OF CHANGING-LOOK AGN NGC 3516', 20.08_20220509_1852, European Space Agency, https://doi.org/10.57780/esa-cutnpuh |