A dataset provided by the European Space Agency

Name 015278
Title The Dust-Scattered X-Ray Haloes of OAO1657-415 and 4U 1538-52
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0152780201

DOI https://doi.org/10.5270/esa-jdqe8h2
Author Dr Michael Audley
Description The luminosity, and hence the distance, of a high-mass X-ray binary is a crucial parameter for inferring the emission mechanism and source geometry. ASCA observations of the high-mass X-ray binaries OAO1657 - 415 and 4Uvirgul1538-52 reveal dust-scattered haloes that appear to decay through the eclipse. However, these results are ambiguous due to the limited spatial resolution of ASCA. We propose to track the spatial and spectral evolution of the haloes through X-ray eclipse with XMM-Newton. We plan to 1) determine the distances to the sources, 2) determine the spatial distribution of the dust, and 3) determine the size distribution and density of the grains.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-08-14T15:34:01Z/2003-08-15T14:02:30Z
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 2004-09-30T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2004-09-30T00:00:00Z, 015278, 17.56_20190403_1200. https://doi.org/10.5270/esa-jdqe8h2