A dataset provided by the European Space Agency

Proposal ID 014580
Title Search for warm-hot gas associated with the Virgo cluster
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0145800101

DOI https://doi.org/10.5270/esa-wzrhlo4
Principal Investigator, PI Dr Ryuichi Fujimoto
Abstract The amount of baryons detected so far at z=0 is only about 20-30% of thatdetected at z=2, or calculated from the standard big-bang nucleosynthesis.This missing baryon problem is now one of the most important topics incosmology. Recent simulations predict that most of the baryons in the presentUniverse reside in a warm-hot intergalactic medium with temperatures of10^5 - 10^7 K, associated with clusters of galaxies. In order to probe thiswarm-hot gas, we propose to observe a quasar behind the Virgo cluster withRGS, and measure the resonant absorption line of O VIII Ly alpha at 653.6eV.This provides a unique opportunity to settle the missing baryon problem andto understand the formation of the large-scale cosmological structure.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-07-13T08:38:51Z/2003-07-14T14:22:13Z
Version 17.56_20190403_1200
Mission Description The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 2004-09-01T00:00:00Z
Last Update 2025-01-27
Keywords "viii ly alpha", "universe reside", "resonant absorption line", "bang nucleosynthesis", "virgo cluster", "scale cosmological structure", "warm hot gas", "missing baryon", "simulations predict"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Ryuichi Fujimoto, 2004, 'Search for warm-hot gas associated with the Virgo cluster', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wzrhlo4