A dataset provided by the European Space Agency

Name 084418
Title Detection of Extended Gas Perpendicular to Cluster Merger Axes
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0844180101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0844180301

DOI https://doi.org/10.5270/esa-gutlbsj
Author Prof Nobuhiro Okabe
Description We define, based on optical galaxy distributions, an unbiased sample of merging
clusters to compile various merger phases. The ROSAT image stacked over cluster-
subcluster pairs shows that the X-ray emitting gas in the central region is
elongated along the merger axis, however, outside the core it is extended along
its perpendicular direction. It implies that the gas halo is pushed outwards
perpendicular to the merger axis by colliding two gas cores. XMM-Newton
snapshots of the clusters enable us to identify cluster merger phases and
provide a robust evidence of the gas extended perpendicular to the merger axis,
for the first time. Furthermore,we measure X-ray temperature and luminosity
within r500, in order to quantify merger boost by comparing with weak-lensing masses.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2019-08-06T23:49:43Z/2019-08-10T11:02:43Z
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 2020-09-02T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Nobuhiro Okabe, 2020, 084418, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-gutlbsj