A dataset provided by the European Space Agency

Name 069306
Title The Stellar Population Around the Intermediate Mass Black Hole ESO 243-49 HLX-1
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0693060301
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0693060401

DOI 10.5270/esa-jfwkzy0
Author Dr Sean Farrell
Description We request joint XMM-Newton and HST observations of the best intermediate mass black hole candidate HLX-1. Recent HST and Swift observations found the broadband spectral energy distribution was well described by an irradiated accretion disc plus a stellar population. However, degeneracies in the models resulted in two acceptable solutions with dramatically different parameter values. We request two observations to be performed with XMM-Newton and the HST at different X-ray luminosities in order to break these model degeneracies using the variability of the disc emission. With these observations we will be able to determine the nature of the environment around the black hole, test formation theories for HLX-1, and rule out beaming as the origin of the extreme luminosities.
Publication Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
Radio variability in the Phoenix Deep Survey at 1.4 GHz . Hancock, P. J., Drury, J. A., et all. . MNRAS . 461-3314 . 2016 . 2016MNRAS.461.3314H ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
New Physical Insights about Tidal Disruption Events from a Comprehensive Observational Inventory at X-Ray Wavelengths . Auchettl, Katie, Guillochon, James, . ApJ . 838-149 . 2017 . 2017ApJ...838..149A ,
Outbursts of the intermediate-mass black hole HLX-1: a wind-instability scenario . Soria, Roberto, Musaeva, Aina, et all. . MNRAS . 469-886 . 2017 . 2017MNRAS.469..886S ,
AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton . Svoboda, J., Guainazzi, M., . A&A . 603-127 . 2017 . 2017A&A...603A.127S ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-11-23T02:19:28Z/2013-07-05T14:50:33Z
Version 17.56_20190403_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 2014-08-31T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2014-08-31T00:00:00Z, 069306, 17.56_20190403_1200. https://doi.org/10.5270/esa-jfwkzy0