A dataset provided by the European Space Agency

Name 040498
Title NGCvirgul4736: Host of exotic Ultraluminous X-ray sources


DOI https://doi.org/10.5270/esa-g1zh0lu
Author Dr Kajal Ghosh
Description 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 (virgul24 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.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-11-27T16:26:39Z/2006-11-28T11:09:25Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2008-08-29T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-08-29T00:00:00Z, 040498, 17.56_20190403_1200. https://doi.org/10.5270/esa-g1zh0lu