A dataset provided by the European Space Agency

Name: Constraining the nature of the companion star of the IMBH HLX-1
Published: 2018-06-13T22:00:00Z

Proposal ID	080131
Title	Constraining the nature of the companion star of the IMBH HLX-1
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801310101
DOI	https://doi.org/10.5270/esa-b4qrm95
Principal Investigator, PI	Dr olivier godet
Abstract	We found in 2009 a strong ~10^4 Msun IMBH candidate, the hyper luminous X-raysource HLX-1 in the outskirts of the ESO 243-49 galaxy. We proposed that theIMBH is fed by mass transfer episodes when a WD donor passes at periapsis and istidally stripped, leading to X-ray outbursts. We detected in previous XMMobservations of HLX-1 faint unresolved X-ray lines at 0.64, 0.88 & 0.98keV. Wepropose that they may be due to photo-ionization of nearby material by thecentral source. We request a 130ks XMM ToO to detect with a high significancesoft X-ray lines when the source will be near its emission peak. Modeling of theRGS data with photo-ionization codes will help us put constraints on thephysical and dynamical properties of the emitting material around the BH.
Publications	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	2017-05-17T23:02:18Z/2017-05-19T11:18:58Z
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	2018-06-13T22:00:00Z
Last Update	2025-01-27
Keywords	"130 xmm", "mass transfer episodes", "eso 243", "dynamical properties", "wd donor passes", "emission peak", "central source", "nearby material", "tidally stripped", "emitting material", "companion star", "photo ionization codes", "xray outburst", "XMM", "msun imbh candidate", "rgs data", "photo ionization", "imbh hlx"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr olivier godet, 2018, 'Constraining the nature of the companion star of the IMBH HLX-1', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-b4qrm95