| Proposal ID | 086394 |
| Title | Is there a slope change in the L_O-L_X relation for low-mass active black holes? |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0863941401 |
| DOI | https://doi.org/10.57780/esa-718ow1g |
| Principal Investigator, PI | Dr Igor Chilingarian |
| Abstract | A linear correlation between X-ray and optical OIII line luminosities in AGNis thought to manifest the ionization of low-density gas by the field of high-energy photons from the central black hole vicinity. It is often used toestimate the AGN ionizing flux from optical spectra. We identified 33 AGNpowered by low-mass BHs (<6e5 MSun). They form a tight (spread 0.23dex) sub-linear (L_OIII~L_X^0.48) relation that steepens and puffs up once more massiveobjects are included. We propose to observe a complete flux limited sample of 21AGN with low-mass BHs (<1e6 MSun) with available optical IFU spectroscopy. Wewill pin down the transition mass where the L_OIII-L_X slope changes and checkwhether it is connected to AGN-driven outflows, internal structure, dynamics, and star formation |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-11-08T07:59:49Z/2021-02-24T18:56:35Z |
| Version | 18.02_20200221_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 | 2022-03-18T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "agn ionizing flux", "internal structure", "linear correlation", "agn powered", "l_oiii l_x slope", "energy photons", "central blackhole vicinity", "6e5 msun", "optical ifu spectroscopy", "1e6 msun", "low density gas", "line luminosities", "low mass bhs", "massive objects", "tight spread", "optical spectra", "transition mass", "l_o l_x relation", "star formation", "agn driven outflows" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Igor Chilingarian, 2022, 'Is there a slope change in the L_O-L_X relation for low-mass active black holes?', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-718ow1g |