NGC~4736: Host of exotic Ultraluminous X-ray sources

Details NGC~4736: Host of exotic Ultraluminous X-ray sources NGC~4736: Host of exotic Ultraluminous X-ray sources

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..186g&link_type=abstract

XMM-Newton Proposal ID #04049801

Other

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Ngc 4736, Xmm-Newton Proposal 04049801

Scientific paper

We have detected four Ultraluminous X-ray Sources (ULXs) in the nearest early-type galaxy NGC4736 (M94). For the first time, we have detected a highly blueshifted OVIII line in the spectrum of a ULX, which is in accordance with the predictions of our geometrical beaming model. We have also detected a possible periodic (~24 ks) ULX and another two ULXs, which are the most promising intermediate mass black hole systems (based on our multiwavelength results). To confirm these exciting results and/or to detect them at different spectral states with contemporaneous radio and optical data, which we will arrange, we propose 48 ks XMM-Newton observations of this galaxy.

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