A dataset provided by the European Space Agency

Name 040509
Title Probing the enigmatic nature of ULXs in NGC1313 with XMM-Newton


DOI 10.5270/esa-0bq5ofz
Author Dr Gulab Dewangan
Description We propose a 120ks observation of NGC1313 to investigate the nature of the two ULXs in this galaxy. NGC1313 X-1 and X-2 are amongst only a handful of the brightest and well separated ULXs that show unusual X-ray spectral behavior and provide the best candidates to probe the slim disk regime. For NGC1313 X-1, our present analysis of the existing, short XMM-Newton observations reveal a cool (blackbody kT~0.2keV) soft excess component and a high energy curvature or a cutoff at 7keV; for X-2, these data reveal an unusual spectral transition, possibly from a high-soft or very high state to a higher flux, slim disk (kT~2keV) regime. The observation will not only determine the accurate shape of the energy and power spectra, but also help to probe the soft excess component through rapid spectral variability.
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XMM-Newton discovery of transient X-ray...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-10-15T23:44:33Z/2006-10-17T13:15:16Z
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 2007-11-21T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-11-21T00:00:00Z, 040509, PPS_NOT_AVAILABLE. https://doi.org/10.5270/esa-0bq5ofz