| Proposal ID | 065780 |
| Title | Hard X-ray spectroscopy of two ultraluminous X-ray sources and a low-luminosity |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0657800101 |
| DOI | https://doi.org/10.5270/esa-ankkiuk |
| Principal Investigator, PI | Dr Sergey Sazonov |
| Abstract | The nature of ultraluminous X-ray sources (ULXs) remains controversial. We donot know whether they host stellar- or intermediate-mass black holes, nor do wehave a clear understanding of the accretion process. Similarly poorly studied isthe accretion onto supermassive black holes in low-luminosity active galacticnuclei (LLAGN). To address these problems, sensitive observations at energiesabove 10 keV are needed. We propose to observe with INTEGRAL for a totalexposure of 4 Msec (2 Msec in AO7 + 2 Msec in AO8) a unique sky region where twoof the brightest ULXs, M82 X-1 and Holmberg IX X-1, and one of the brightestLLAGN, M81, are located. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2011-03-18T16:31:57Z/2011-11-23T07:20:24Z |
| 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 | 2012-12-08T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "brightest llagn", "hard xray spectroscopy", "ultraluminous xray sources", "M82", "supermassive blackhole", "m82 x", "accretion process", "brightest ulxs", "sky region", "holmberg ix x", "low luminosity", "total exposure" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Sergey Sazonov, 2012, 'Hard X-ray spectroscopy of two ultraluminous X-ray sources and a low-luminosity', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ankkiuk |