| Name | 086409 |
| Title | Extending a bona fide IMBH sample\: X-ray confirmation of optical AGN candidates |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0864090301 |
| DOI | https://doi.org/10.57780/esa-2d3f3xi |
| Author | European Space Agency |
| Description | A population of intermediate black holes (IMBH) will allow us to solve one of the long-standing problems in modern astrophysics, the origin of supermassive black holes. Having analysed 1 million optical spectra, we identified 305 IMBH candidates (3e4-2e5 MSun), which reside in galaxy centers and pose as active galactic nuclei. With Chandra DDT and XMM-Newton AO-18 observations and mining X-ray data archives, we confirmed the AGN nature of 11 candidates, thus validating our IMBH search approach. Here we propose to observe 12 additional optically selected IMBH candidates to double the number of X-ray confirmed accreting IMBHs. This will enable detailed studies of the IMBH population and help to constrain the masses of ..seed. black holes in the early Universe. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-11-15T17:24:07Z/2020-11-15T22:24:07Z |
| Version | 18.02_20200221_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 | 2021-12-12T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2021, Extending A Bona Fide Imbh Sample\: X-Ray Confirmation Of Optical Agn Candidates, 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-2d3f3xi |