A dataset provided by the European Space Agency

Name 011248
Title A Study of the Loop I bubble by X-ray shodows of the Ophiuchus molecular cloud


DOI 10.5270/esa-97iqwzz
Author Dr Bernd Aschenbach
Description GT- The Ophiuchus molecular cloud at a distance of 170 pc is located near the centre of the Loop I superbubble, which is filled with hot gas of a few million K. The large absorbing column of 10^{22} cm^{-2} will cast a deep shadow up to energies of 1.5 keV. Ongoing dynamical processes (stellar winds, supernovae) within Loop I may lead to a non-equilibirum plasma state, which we can determine by the study of line ratios between 0.3 - 2.0 keV. We will perform on- and off-cloud observations in order to distinguish between fore- and background spectra. Three adjacent pointings of 15 ksec will cover the steepest gradient in X-ray brightness. In combination with the Aquila Rift proposal it is possible to isolate the X-ray spectrum of the hot gas produced by the Sco-Cen association.
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Constraints on steri...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-09-09T11:57:12Z/2002-02-24T17:48:18Z
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 2003-03-16T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2003-03-16T00:00:00Z, 011248, 17.56_20190403_1200. https://doi.org/10.5270/esa-97iqwzz