A dataset provided by the European Space Agency

Name 050587
Title The 6.7 keV-line emission in the Galactic Centre
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0505870301

DOI 10.5270/esa-20kxbih
Author Dr Masaaki Sakano
Description The Galactic Centre Region emits a strong 6.7-keV line attributable to Ka emission of He-like iron, of which the origin has remained a puzzle since its discovery. Arguably, recent Chandra results imply that the line is produced in a hot extended plasma. However, we have shown that the line has a relatively smooth, circularly symmetric distribution centred on Sgr A* and a surface brightness which falls off with radius as 1-r over the range r=3.-12.. This mirrors the distribution of the stellar population and adds strong support to the hypothesis that the 6.7-keV line originates in the summed emission of faint point sources. Here we propose to measure the surface brightness distribution of the 6.7-keV line out to a radius of ~35. as a test of the competing scenarios for its origin.
Publication The XMM Cluster Survey: optical analysis methodology and the first data release . Mehrtens, Nicola, Romer, A. Kathy, et all. . MNRAS . 423-1024 . 2012 . 2012MNRAS.423.1024M ,
An All-Sky Atlas of Radio-X-ray Associations . Flesch, E., . PASA . 27-283 . 2010 . 2010PASA...27..283F ,
The XMM Cluster Survey: X-ray analysis methodology . Lloyd-Davies, E. J., Romer, A. Kathy, et all. . MNRAS . 418-14 . 2011 . 2011MNRAS.418...14L ,
Classification of X-Ray Sources in the XMM-Newton Serendipitous Source Catalog . Lin, Dacheng, Webb, Natalie A., . ApJ . 756-27 . 2012 . 2012ApJ...756...27L ,
The discovery of the 401 Hz accreting millisecond pulsar IGR J17498-2921 in a 3.8 h orbit . Papitto, A., Bozzo, E., et all. . A&A . 535-4 . 2011 . 2011A&A...535L...4P ,
XMM-Newton observations of the Galactic Centre Region - I. The distribution of low-luminosity X-ray sources . Heard, V., Warwick, R. S., . MNRAS . 428-3462 . 2013 . 2013MNRAS.428.3462H ,
The diversity of quasars unified by accretion and orientation . Shen, Yue, Ho, Luis C., . Natur . 513-210 . 2014 . 2014Natur.513..210S ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
Sunyaev-Zel.dovich effect or not? Detecting the main foreground effect of most galaxy c...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-03-09T23:44:18Z/2008-03-10T08:36:15Z
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 2009-04-11T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2009-04-11T00:00:00Z, 050587, 17.56_20190403_1200. https://doi.org/10.5270/esa-20kxbih