| Proposal ID | 072286 |
| Title | On the Nature of the Sculptor Wall X-ray Absorber |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0722860101 |
| DOI | https://doi.org/10.5270/esa-vuoyj3i |
| Principal Investigator, PI | Dr Taotao Fang |
| Abstract | This is a continuation of an approved AO-11 program. Although most of theWarm-Hot Intergalactic Medium (WHIM) has yet to be found, an extremely promisingcandidate for the typical WHIM gas is our detection of an OVII K-alphaabsorption line located in the Sculptor Wall superstructure of galaxies(z~0.03). We propose a deep 390ks RGS observation of the Sculptor Wall absorberthat, combining with the planned AO-11 program, will detect the OVII K-beta lineat the 4-sigma level and the OVII K-alpha line at >5-sigma level. The existenceof the K-beta line provide crucial objective evidence for its WHIM nature, anddistinguish the absorber from the type of gas found in a galaxy like the MilkyWay, and from the high density tail of the WHIM detected in emission. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2013-12-02T14:56:37Z/2013-12-25T20:39:11Z |
| 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 | 2015-01-20T23:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "beta line", "approved ao", "alpha line", "density tail", "galaxy z", "sigma level", "typical whim gas", "objective evidence", "deep 390 rgs", "sculptor wall absorber", "promising candidate", "sculptor wall superstructure", "planned ao" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Taotao Fang, 2015, 'On the Nature of the Sculptor Wall X-ray Absorber', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-vuoyj3i |