A dataset provided by the European Space Agency

Proposal ID 040508
Title Probing the X-ray nature of soft-spectrum Ultra-luminous X-ray sources
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405080101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405080301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405080401
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405080501

DOI https://doi.org/10.5270/esa-msjr3ot
Principal Investigator, PI Dr Kajal Ghosh
Abstract We propose observations of the nearby galaxies NGC 5055, NGC 1316, and NGC 1407.Each of these galaxies hosts Ultra-Luminous X-ray sources (ULXs) with softspectra (power law spectral indices $>$3 or, equivalently, optically-thin plasmatemperatures $<$2 keV). The high throughput and broad bandpass of XMM-Newtonwill be able to distinguish between competing models for soft spectra ULXphenomena including ultra-soft accretion disk components in intermediate-massblack holes, emission-line supernova plasma, super-soft sources, and soft X-raytransients.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-12-07T17:36:56Z/2007-06-19T14:45:26Z
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 2008-09-27T00:00:00Z
Last Update 2025-08-04
Keywords "XMM", "XMM-Newton", "super soft sources", "ngc 1407", "xmm newton", "broad bandpass", "soft xray transients", "NGC 5055", "ngc 1316"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Kajal Ghosh, 2008, 'Probing the X-ray nature of soft-spectrum Ultra-luminous X-ray sources', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-msjr3ot