A dataset provided by the European Space Agency

Name 020213
Title SHADOWING BY THE MAGELLANIC BRIDGE: THE ORIGIN OF THE 3-4 KEV BACKGROUND
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0202130101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0202130201
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0202130301

DOI 10.5270/esa-hs5x1xn
Author Dr STEVE SNOWDEN
Description At high Galactic latitudes the 3-4 keV background consists of both extragalactic and Galactic emission with uncertain relative contributions. The spectrum shows an excess over the extrapolation of the extragalactic power law observed at higher energies which has been attributed to emission from sources as varied as a Galactic halo, the Local Group, diffuse cosmological emission, and a bump or upturn in the spectra of discrete cosmological sources. By studying the shadow of an NH enhancement in the Magellanic Bridge, the observed flux can be separated into foreground and background components placing clear constraints on both Galactic (e.g., halo emission is linked to the Galactic energy balance and environment) and cosmological (e.g., the structure of the universe) models.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-09-21T02:56:00Z/2005-01-16T10:26:58Z
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 2006-06-15T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2006-06-15T00:00:00Z, 020213, 17.56_20190403_1200. https://doi.org/10.5270/esa-hs5x1xn