A dataset provided by the European Space Agency

Name 040441
Title XMM observation of merging cluster of galaxies Abell 168
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404410101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404410201

DOI 10.5270/esa-5vf3skp
Author Mr Karl Andersson
Description We propose two 45 ksec observations of A168 (z=0.047), a two-component cluster in a merger state in the plane of the sky. The cluster is characterized, as seen by Chandra, by an apparent cold front in the direction of motion in front of one subcluster center. This is contrary to other mergers (e.g. RXJ0658-55) where the cold fronts trail behind the subclusters. It is necessary to produce highly resolved temperature maps in order to categorize these clusters and to understand their formation and infer the history of heating the intra-cluster gas. This is not possible with the existing Chandra data due to limited photon statistics. The analysis of the XMM data will allow for a detailed study of the properties of the cold "tongue" of gas which may solve the riddle of mergers.
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Instrument EMOS1, EMOS2, EPN, RGS1, RGS2
Temporal Coverage 2006-12-20T19:49:09Z/2006-12-25T11:13:40Z
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 2008-01-21T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-01-21T00:00:00Z, 040441, 17.56_20190403_1200. https://doi.org/10.5270/esa-5vf3skp