
| Proposal ID | 074370 |
| Title | Mapping the Broad-band Spectrum of a New Candidate Intermediate Mass Black Hole |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0743700201 |
| DOI | https://doi.org/10.5270/esa-tac50n7 |
| Principal Investigator, PI | Dr Sean Farrell |
| Abstract | We request joint XMM-Newton & HST observations of a new intermediate mass blackhole candidate in the galaxy LEDA 87326 to map the broad-band spectral energydistribution from X-ray to near-IR. Previous observations with the XMM-NewtonEPIC and OM cameras detected an X-ray source with an observed 0.2-10 keVluminosity of 6E41 erg/s, with the X-ray spectrum dominated by a hard power lawand the UV/optical data consistent with thermal emission from a cool (~0.08 keV)accretion disc. The high X-ray luminosity and low disc temperature imply a blackhole mass > 4000 Msun. By observing this source simultaneously with XMM-Newtonand the HST we will confirm that the observed optical emission is from anaccretion disc and determine whether any reprocessing in the outer disc is present. |
| Publications |
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| Instrument | EPN, RGS1, OM, RGS2, EMOS1, EMOS2 |
| Temporal Coverage | 2015-01-09T09:43:23Z/2015-01-11T00:51:43Z |
| Version | 21.51_20241115_1113 |
| 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 | 2016-02-03T23:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "XMM-Newton", "om cameras", "xray spectrum dominated", "XMM", "blackhole mass", "xray luminosity", "xmm newton epic", "optical data", "thermal emission", "EPIC", "hard power law", "low disc temperature", "galaxy leda 87326", "4000 msun", "HST", "kev luminosity", "outer disc", "xray source", "accretion disc", "optical emission", "broad band spectrum", "6e41 erg", "xmm newton" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Sean Farrell, 2016, 'Mapping the Broad-band Spectrum of a New Candidate Intermediate Mass Black Hole', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-tac50n7 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |