The two very-luminous ULXs (LX greater than 2E39 erg/s) in NGC 1672 arepositioned precisely at the ends of the nuclear bar. The most luminous ULXs arethe most difficult to explain as .normal. X-ray binaries, and so are likely ULXcandidates for IMBHs. We propose a detailed study, for the first time, of theX-ray spectra of these two fascinating ULXs, to study their spectral featuresand compare with ULX model predictions. A comparison with XMM-Newton X-rayspectra of ULXs in non-barred spirals will allow an important test to see ifULXs in spiral bars have unique spectral properties.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2004-11-27T05:31:45Z/2004-11-27T19:23:38Z
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.
European Space Agency, Dr EDWARD COLBERT, 2005, 'ULTRA-LUMINOUS X-RAY SOURCES IN THE BARRED SPIRAL GALAXY NGC 1672', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-j6mjsb0
