A dataset provided by the European Space Agency

Name 020175
Title X-RAY PROPERTIES OF A MASS-SELECTED GROUP CATALOG
URL

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201750201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201750301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201750401
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201750901
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201751101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201751201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201751301
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201751501

DOI https://doi.org/10.5270/esa-a4lnkca
Author Dr PASQUALE MAZZOTTA
Description The observed X-ray luminosities of groups are inconsistent with a model in which
the intragroup medium is shock-heated during the collapse. It is thought that a
combination of pre-heating, gas cooling and energy injection removes low entropy
gas, reducing the system.s X-ray luminosity. However, the extent of this process
is uncertain because the previous selection of group catalogs has been based on
X-ray emission. We have constructed a complete, mass-selected catalog of groups
from the 2dFGRS. X-ray observations of this sample would for the first time
provide accurate determinations of the entropy in a mass-selected sample. These
observations are of key importance for understanding the thermal history of the
intragroup medium and the interplay between X-ray cooling and galaxy formation.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-05-20T18:25:36Z/2005-06-18T22:26:50Z
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 2006-07-08T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr PASQUALE MAZZOTTA, 2006, 020175, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-a4lnkca