A dataset provided by the European Space Agency

Name: Confirming spectral state transitions in ESO 243-49 HLX-1
Published: 2011-06-09T00:00:00Z

Proposal ID	065551
Title	Confirming spectral state transitions in ESO 243-49 HLX-1
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0655510201
DOI	https://doi.org/10.5270/esa-v7t4d1w
Principal Investigator, PI	Dr Sean Farrell
Abstract	Swift monitoring of the intermediate mass black hole candidate ESO 243-49 HLX-1found that in August 2009 it dropped in flux by an order of magnitude inconjunction with a possible spectral hardening. The limited throughput of theSwift XRT prevents us from confirming that HLX-1 undergoes transitions betweenthe same canonical spectral states as Galactic black hole binaries. Havingperformed XMM observations in the high/soft state, we wish to obtain a highquality X-ray spectrum in the low state to confirm the hardening suggested bythe XRT. This is the missing piece before conclusions can be drawn from thecomparison of its spectral properties with those of Galactic black hole systems.
Publications	X-Ray Variability and Hardness of ESO 243-49 HLX-1: Clear Evidence for Spectral State Transitions \|Servillat Mathieu Farrell Sean A. et al. \| ApJ \| 743-6 \| 2011 \| 2011ApJ...743....6S \| http://ui.adsabs.harvard.edu/#abs/2011ApJ...743....6S Exploring the nature of the brightest hyper-luminous X-ray source \|Farrell S. A. Servillat M. et al. \| AN \| 332-392 \| 2011 \| 2011AN....332..392F \| http://ui.adsabs.harvard.edu/#abs/2011AN....332..392F Investigating Slim Disk Solutions for HLX-1 in ESO 243-49 \|Godet O. Plazolles B. et al. \| ApJ \| 752-34 \| 2012 \| 2012ApJ...752...34G \| http://ui.adsabs.harvard.edu/#abs/2012ApJ...752...34G H I study of the environment around ESO 243-49 the host galaxy of an intermediate-mass black hole \|Musaeva A. Koribalski B. S. et al. \| MNRAS \| 447-1951 \| 2015 \| 2015MNRAS.447.1951M \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.447.1951M The Origin of Variability of the Intermediate-mass Black-hole ULX System HLX-1 in ESO 243-49 \|Lasota J.-P. Alexander T. et al. \| ApJ \| 735-89 \| 2011 \| 2011ApJ...735...89L \| http://ui.adsabs.harvard.edu/#abs/2011ApJ...735...89L Radio variability in the Phoenix Deep Survey at 1.4 GHz \|Hancock P. J. Drury J. A. et al. \| MNRAS \| 461-3314 \| 2016 \| 2016MNRAS.461.3314H \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.461.3314H The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch Eric W. \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/2017ApJ...838..149A Ultra-steep-spectrum Radio Jellyfish Uncovered in A2877 \|Hodgson Torrance Bartalucci Iacopo et al. \| ApJ \| 909-198 \| 2021 \| 2021ApJ...909..198H \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...909..198H Classification of 4XMM-DR9 sources by machine learning \|Zhang Yanxia Zhao Yongheng \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z Robust constraints on feebly interacting particles using XMM-Newton \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque Pedro De la Torre Balaji Shyam \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2010-05-14T08:35:03Z/2010-05-15T14:07:04Z
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.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2011-06-09T00:00:00Z
Last Update	2025-01-27
Keywords	"limited throughput", "galactic blackhole systems", "performed xmm", "hardening suggested", "canonical spectral", "eso 243", "swift xrt prevents", "missing piece", "undergoes transitions", "spectral properties", "quality xray spectrum", "XMM", "galactic blackhole binary", "spectral hardening"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Sean Farrell, 2011, 'Confirming spectral state transitions in ESO 243-49 HLX-1', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v7t4d1w