A dataset provided by the European Space Agency

Name 014580
Title Search for warm-hot gas associated with the Virgo cluster


DOI https://doi.org/10.5270/esa-wzrhlo4
Author Dr Ryuichi Fujimoto
Description The amount of baryons detected so far at z=0 is only about 20-30% of that
detected at z=2, or calculated from the standard big-bang nucleosynthesis.
This .missing baryon. problem is now one of the most important topics in
cosmology. Recent simulations predict that most of the baryons in the present
Universe reside in a warm-hot intergalactic medium with temperatures of
10^5 - 10^7 K, associated with clusters of galaxies. In order to probe this
warm-hot gas, we propose to observe a quasar behind the Virgo cluster with
RGS, 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 and
to understand the formation of the large-scale cosmological structure.
Publication No observations found associated with the current proposal
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 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 2004-09-01T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Ryuichi Fujimoto, 2004, 014580, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wzrhlo4