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 (virgul0.08 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.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2015-01-09T09:43:23Z/2015-01-11T00:51:43Z
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.
European Space Agency, Dr Sean Farrell, 2016, 'Mapping the Broad-band Spectrum of a New Candidate Intermediate Mass Black Hole', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-tac50n7
