A dataset provided by the European Space Agency

Name: X-ray emission components of the grand-design spiral galaxy NGC 6946
Published: 2009-01-17T00:00:00Z

Proposal ID	050073
Title	X-ray emission components of the grand-design spiral galaxy NGC 6946
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0500730101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0500730201
DOI	https://doi.org/10.5270/esa-kz6d4zr
Principal Investigator, PI	Dr Matthias Ehle
Abstract	We propose to complete our sensitive XMM-Newton survey of the grand-design Scdface-on spiral galaxy NGC 6946. This galaxy is remarkable due to its high starformation activity, its massive northern spiral arm and the magnetic arms,located between the optical arms, possibly magnetic reconnection regions. StrongFaraday depolarization of the polarized radio emission from the disc indicatesan extended halo of ionized gas around NGC 6946. We wish to use XMM-Newtonobservations to disentangle and characterize the emission from X-ray pointsources and extended hot gas from the disc, the magnetic arms and the halo.The origin of the puzzling ultra-luminous emission complex MF16 will also beinvestigated.
Publications	Detection of Strong Short-term Variability in NGC 6946 X-1 \|Rao Fengyun Feng Hua \| ApJ \| 722-620 \| 2010 \| 2010ApJ...722..620R \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...722..620R 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 Exospheric solar wind charge exchange as seen by XMM-Newton \|Carter J. A. Semba S. \| AN \| 333-313 \| 2012 \| 2012AN....333..313C \| http://ui.adsabs.harvard.edu/#abs/2012AN....333..313C 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 An XMM-Newton Survey of the Soft X-Ray Background. II. An All-Sky Catalog of Diffuse O VII and O VIII Emission Intensities \|Henley David B. Shelton Robin L. \| ApJS \| 202-14 \| 2012 \| 2012ApJS..202...14H \| http://ui.adsabs.harvard.edu/#abs/2012ApJS..202...14H A systematic cross-search for radio/infrared counterparts of XMM- Newton sources \|Combi J. A. Albacete Colombo J. F. et al. \| Ap&SS \| 331-53 \| 2011 \| 2011Ap&SS.331...53C \| http://ui.adsabs.harvard.edu/#abs/2011Ap&SS.331...53C The ultraluminous state revisited: fractional variability and spectral shape as diagnostics of super-Eddington accretion \|Sutton Andrew D. Roberts Timothy P. \| MNRAS \| 435-1758 \| 2013 \| 2013MNRAS.435.1758S \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.435.1758S Automatic Classification of Time-variable X-Ray Sources \|Lo Kitty K. Farrell Sean et al. \| ApJ \| 786-20 \| 2014 \| 2014ApJ...786...20L \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...786...20L Synapses of active galactic nuclei:. Comparing X-ray and optical classifications using artificial neural networks \|Gonzalez-Martin O. Diaz-Gonzalez D. et al. \| A&A \| 567-92 \| 2014 \| 2014A&A...567A..92G \| http://ui.adsabs.harvard.edu/#abs/2014A&A...567A..92G 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 A spectral-timing model for ULXs in the supercritical regime \|Middleton Matthew J. Heil Lucy et al. \| MNRAS \| 447-3243 \| 2015 \| 2015MNRAS.447.3243M \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.447.3243M Non-detection of X-ray emission from sterile neutrinos in stacked galaxy spectra \|Anderson Michael E. Churazov Eugene \| MNRAS \| 452-3905 \| 2015 \| 2015MNRAS.452.3905A \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.452.3905A X-ray time lags and non-linear variability in the ultraluminous X-ray sources NGC 5408 X-1 and NGC 6946 X-1 \|Hernandez-Garcia L. Vaughan S. et al. \| MNRAS \| 453-2877 \| 2015 \| 2015MNRAS.453.2877H \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.453.2877H Hot gas and magnetic arms of NGC 6946: Indications for reconnection heating? \|Wezgowiec M. Ehle M. \| A&A \| 585-3 \| 2016 \| 2016A&A...585A...3W \| http://ui.adsabs.harvard.edu/#abs/2016A&A...585A...3W The Interaction of the Fermi Bubbles with the Milky Ways Hot Gas Halo \|Miller Matthew J. Bregman Joel N. \| ApJ \| 829-9 \| 2016 \| 2016ApJ...829....9M \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...829....9M 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 Soft extragalactic X-ray binaries at the Eddington Threshold \|Earnshaw Hannah M. Roberts Timothy P. \| MNRAS \| 467-2690 \| 2017 \| 2017MNRAS.467.2690E \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.467.2690E Searching for propeller-phase ULXs in the XMM-Newton Serendipitous Source Catalogue \|Earnshaw H. P. Roberts T. P. \| MNRAS \| 476-4272 \| 2018 \| 2018MNRAS.476.4272E \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.476.4272E A new clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies \|Earnshaw H. P. Roberts T. P. et al. \| MNRAS \| 483-5554 \| 2019 \| 2019MNRAS.483.5554E \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.483.5554E Ultraluminous X-ray sources with flat-topped noise and QPO \|Atapin Kirill Fabrika Sergei \| MNRAS \| 486-2766 \| 2019 \| 2019MNRAS.486.2766A \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.486.2766A A Broadband Look at the Old and New ULXs of NGC 6946 \|Earnshaw Hannah P. Grefenstette Brian W. et al. \| ApJ \| 881-38 \| 2019 \| 2019ApJ...881...38E \| http://ui.adsabs.harvard.edu/#abs/2019ApJ...881...38E A Sparkler in the Fireworks Galaxy: Discovery of an Ultraluminous X-Ray Transient with a Strong Oxygen Line in NGC 6946 \|Wang Chen Soria Roberto \| ApJ \| 883-44 \| 2019 \| 2019ApJ...883...44W \| http://ui.adsabs.harvard.edu/#abs/2019ApJ...883...44W An X-Ray- and SZ-bright Diffuse Source toward M31: A Local Hot Bridge \|Qu Zhijie Huang Rui et al. \| ApJ \| 907-14 \| 2021 \| 2021ApJ...907...14Q \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...907...14Q 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 The impact of precession on the observed population of ULXs \|Khan Norman Middleton Matthew J. et al. \| MNRAS \| 509-2493 \| 2022 \| 2022MNRAS.509.2493K \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.509.2493K The Solar Cycle Temporal Variation of the Solar Wind Charge Exchange X-Ray Lines \|Qu Zhijie Koutroumpa Dimitra et al. \| ApJ \| 930-21 \| 2022 \| 2022ApJ...930...21Q \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...930...21Q The Redshift Evolution of Ultraluminous X-Ray Sources out to z 0.5: Comparison with X-Ray Binary Populations and Contribution to the Cosmic X-Ray Background \|Scott Barrows R. Comerford Julia M. et al. \| ApJ \| 932-27 \| 2022 \| 2022ApJ...932...27S \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...932...27S Variability in a low-mass active galactic nucleus: oscillation or eruption? \|Webbe Robbie Young A. J. \| MNRAS \| 518-3428 \| 2023 \| 2023MNRAS.518.3428W \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.518.3428W Unveiling the accretion scenario of BH-ULXs using XMM-Newton observations \|Majumder Seshadri Das Santabrata et al. \| MNRAS \| 526-2086 \| 2023 \| 2023MNRAS.526.2086M \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.526.2086M The XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII O VIII and Fe L-shell Transitions \|Pan Zeyang Qu Zhijie et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P 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	2007-11-02T21:53:24Z/2007-11-09T07:22:11Z
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	2009-01-17T00:00:00Z
Last Update	2025-01-27
Keywords	"grand design scd", "magnetic reconnection region", "magnetic arms", "NGC 6946", "ionized gas", "xmm newton", "star formation activity", "XMM-Newton", "ngc 6946", "faraday depolarization", "XMM", "polarized radio emission", "hot gas", "optical arms"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Matthias Ehle, 2009, 'X-ray emission components of the grand-design spiral galaxy NGC 6946', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kz6d4zr