| Proposal ID | 065136 |
| Title | Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651360301 |
| DOI | https://doi.org/10.5270/esa-5u2n9ae |
| Principal Investigator, PI | Dr Stefano Bianchi |
| Abstract | The key to find genuine unabsorbed Seyfert 2s, excluding variability issues,is to perform simultaneous X-ray and optical spectroscopy. A campaign ofsimultaneous X-ray and optical observations of unabsorbed Seyfert 2s has alreadyproved successful in previous XMM-Newton AOs, leading to the discovery of thefirst unambiguous object of this new class (NGC3147: Bianchi et al., 2008). Withthe current proposal, we want to test completely different luminosity regimes,observing with XMM-Newton two unabsorbed Seyfert 2 candidates, Mrk273x andNGC4698. As already successfully done for the other targets allocated inprevious AOs to this program, we will organize simultaneous optical observationswith ground-based observatories. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2010-05-13T16:55:38Z/2010-06-26T17:58:44Z |
| 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 | 2011-07-16T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "NGC3147", "XMM-Newton", "xmm newton aos", "unambiguous object", " 2008", "unabsorbed seyfert 2s", "targets allocated", "class ngc3147", "optical spectroscopy", "proved successful", "luminosity regimes", "bianchi .", "unified models", "seyfert galaxy", "test completely", "unabsorbed type" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Stefano Bianchi, 2011, 'Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-5u2n9ae |