A dataset provided by the European Space Agency

Name: The 6.7 keV-line emission in the Galactic Centre
Published: 2009-04-11T00:00:00Z

Proposal ID	050587
Title	The 6.7 keV-line emission in the Galactic Centre
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0505870301
DOI	https://doi.org/10.5270/esa-20kxbih
Principal Investigator, PI	Dr Masaaki Sakano
Abstract	The Galactic Centre Region emits a strong 6.7-keV line attributable to Kaemission of He-like iron, of which the origin has remained a puzzle since itsdiscovery. Arguably, recent Chandra results imply that the line is produced in ahot extended plasma. However, we have shown that the line has a relativelysmooth, circularly symmetric distribution centred on Sgr A* and a surfacebrightness which falls off with radius as 1/r over the range r=3.-12.. Thismirrors the distribution of the stellar population and adds strong support tothe hypothesis that the 6.7-keV line originates in the summed emission of faintpoint sources. Here we propose to measure the surface brightness distribution ofthe 6.7-keV line out to a radius of virgul35. as a test of the competing scenarios for its origin.
Publications	The XMM Cluster Survey: optical analysis methodology and the first data release \|Mehrtens, Nicola, Romer, A. Kathy, et al. \| MNRAS \| 423-1024 \| 2012 \| 2012MNRAS.423.1024M \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.1024M An All-Sky Atlas of Radio/X-ray Associations \|Flesch, E., \| PASA \| 27-283 \| 2010 \| 2010PASA...27..283F \| http://ui.adsabs.harvard.edu/#abs/2010PASA...27..283F The XMM Cluster Survey: X-ray analysis methodology \|Lloyd-Davies, E. J., Romer, A. Kathy, et al. \| MNRAS \| 418-14 \| 2011 \| 2011MNRAS.418...14L \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/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 al. \| A&A \| 535-4 \| 2011 \| 2011A&A...535L...4P \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.428.3462H The diversity of quasars unified by accretion and orientation \|Shen, Yue, Ho, Luis C., \| Natur \| 513-210 \| 2014 \| 2014Natur.513..210S \| http://ui.adsabs.harvard.edu/#abs/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 \| http://ui.adsabs.harvard.edu/#abs/2014Ap&SS.354...97Y Sunyaev-Zel.dovich effect or not? Detecting the main foreground effect of most galaxy clusters \|Xiao, Weike, Chen, Chen, et al. \| MNRAS \| 432-41 \| 2013 \| 2013MNRAS.432L..41X \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.432L..41X The XMM-Newton view of the central degrees of the Milky Way \|Ponti, G., Morris, M. R., et al. \| MNRAS \| 453-172 \| 2015 \| 2015MNRAS.453..172P \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.453..172P The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch, Eric W., \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F Anisotropy of the galaxy cluster X-ray luminosity-temperature relation \|Migkas, Konstantinos, Reiprich, Thomas H., \| A&A \| 611-50 \| 2018 \| 2018A&A...611A..50M \| http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..50M An X-ray survey of the central molecular zone: Variability of the Fe Kalpha emission line \|Terrier, R., Clavel, M., et al. \| A&A \| 612-102 \| 2018 \| 2018A&A...612A.102T \| http://ui.adsabs.harvard.edu/#abs/2018A&A...612A.102T The XMM Cluster Survey: Present status and latest results \|Viana, P. T. P., Mehrtens, N., et al. \| AN \| 334-462 \| 2013 \| 2013AN....334..462V \| http://ui.adsabs.harvard.edu/#abs/2013AN....334..462V X-ray chimneys in the Galactic Centre \|Chernyakova, Masha, \| Natur \| 567-318 \| 2019 \| 2019Natur.567..318C \| http://ui.adsabs.harvard.edu/#abs/2019Natur.567..318C An X-ray chimney extending hundreds of parsecs above and below the Galactic Centre \|Ponti, G., Hofmann, F., et al. \| Natur \| 567-347 \| 2019 \| 2019Natur.567..347P \| http://ui.adsabs.harvard.edu/#abs/2019Natur.567..347P Testing emergent gravity on galaxy cluster scales \|Tamosiunas, Andrius, Bacon, David, et al. \| JCAP \| 5-53 \| 2019 \| 2019JCAP...05..053T \| http://ui.adsabs.harvard.edu/#abs/2019JCAP...05..053T Chandra Follow-up of the SDSS DR8 Redmapper Catalog Using the MATCha Pipeline \|Hollowood, Devon L., Jeltema, Tesla, et al. \| ApJS \| 244-22 \| 2019 \| 2019ApJS..244...22H \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..244...22H Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters \|Palmese, A., Annis, J., et al. \| MNRAS \| 493-4591 \| 2020 \| 2020MNRAS.493.4591P \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.493.4591P The Galactic center chimneys: the base of the multiphase outflow of the Milky Way \|Ponti, G., Morris, M. R., et al. \| A&A \| 646-66 \| 2021 \| 2021A&A...646A..66P \| http://ui.adsabs.harvard.edu/#abs/2021A&A...646A..66P Classification of 4XMM-DR9 sources by machine learning \|Zhang, Yanxia, Zhao, Yongheng, \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z Tracing the Milky Way.s Vestigial Nuclear Jet \|Cecil, Gerald, Wagner, Alexander Y., et al. \| ApJ \| 922-254 \| 2021 \| 2021ApJ...922..254C \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...922..254C The episodic and multiscale Galactic Centre \|Bryant, Aaron, Krabbe, Alfred, \| NewAR \| 93-101630 \| 2021 \| 2021NewAR..9301630B \| http://ui.adsabs.harvard.edu/#abs/2021NewAR..9301630B X-ray astronomy comes of age \|Wilkes, Belinda J., Tucker, Wallace, et al. \| Natur \| 606-261 \| 2022 \| 2022Natur.606..261W \| http://ui.adsabs.harvard.edu/#abs/2022Natur.606..261W Scientific objectives of the Hot Universe Baryon Surveyor (HUBS) mission \|Bregman, Joel, Cen, Renyue, et al. \| SCPMA \| 66-299513 \| 2023 \| 2023SCPMA..6699513B \| http://ui.adsabs.harvard.edu/#abs/2023SCPMA..6699513B The Fermi/eROSITA bubbles: a look into the nuclear outflow from the Milky Way \|Sarkar, Kartick C., \| A&ARv \| 32-1 \| 2024 \| 2024A&ARv..32....1S \| http://ui.adsabs.harvard.edu/#abs/2024A&ARv..32....1S From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez, Antonio C., \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Robust constraints on feebly interacting particles using XMM-Newton \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque, Pedro, Balaji, Shyam, \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
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 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	2009-04-11T00:00:00Z
Keywords	"galactic centre", "kev line originates", "surface brightness", "kev line", "kev line attributable", "ka emission", "summed emission", "surface brightness distribution", "stellar population", "kev line emission", "relatively smooth"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Masaaki Sakano, 2009, 'The 6.7 keV-line emission in the Galactic Centre', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-20kxbih