A dataset provided by the European Space Agency

Name 030432
Title X Comae X-rays the Stickman.s Legs


DOI https://doi.org/10.5270/esa-twnl0v6
Author Prof Patrick Henry
Description The existence of a warm-hot intergalactic medium (WHIM) can solve two puzzles: Why galaxy clusters do not follow classical scaling relations and Where are the local baryons observed at high z. Our XMM EPIC observations of the outskirts of the Coma cluster detect the WHIM in emission. Remarkably, a bright AGN is also projected onto the Coma cluster. In AO3 we were granted 300 ks to detect the WHIM in absorption against this AGN, but received only 172 ks of good time. The results of this observation are quite interesting, if at low significance due to the reduced exposure. We detect absobrtion features centered on the Coma z. We here request sufficient time to make up the lost exposure in order to place this detection on a firmer statistical basis.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2005-06-27T05:00:06Z/2006-06-07T17:19:19Z
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 2008-11-19T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-11-19T00:00:00Z, 030432, PPS_NOT_AVAILABLE. https://doi.org/10.5270/esa-twnl0v6