Probing the X-ray nature of soft-spectrum Ultra-luminous X-ray sources

Details Probing the X-ray nature of soft-spectrum Ultra-luminous X-ray sources Probing the X-ray nature of soft-spectrum Ultra-luminous X-ray sources

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..189g&link_type=abstract

XMM-Newton Proposal ID #04050801

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Ngc 5055, Xmm-Newton Proposal 04050801

Scientific paper

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 soft spectra (power law spectral indices >3 or, equivalently, optically-thin plasma temperatures <2 keV). The high throughput and broad bandpass of XMM-Newton will be able to distinguish between competing models for soft spectra ULX phenomena including ultra-soft accretion disk components in intermediate-mass black holes, emission-line supernova plasma, super-soft sources, and soft X-ray transients.

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