A dataset provided by the European Space Agency

Name: XMM-Newton observations of NGC4258
Published: 2007-12-12T00:00:00Z

Proposal ID	040056
Title	XMM-Newton observations of NGC4258
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400560301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400560401
DOI	https://doi.org/10.5270/esa-o8diovy
Principal Investigator, PI	Prof Christopher Reynolds
Abstract	We request three XMM observations totaling 200ksec of the low-luminosity activegalaxy NGC4258. The proposed program will allow us to (1) Probe the accretiondisk geometry through the shape, strength and variability of the iron emissionline discovered by ASCA, (2) Search for the absorption line signatures of anionized outflow hinted at in Chandra ACIS data, (3) Obtain a unique probe theaccretion disk structure through month-to-month variations in the neutralabsorbing column. Given the details constraints on the geometry of this AGN andthe mass of the central black hole from radio observations of this object, theseX-ray investigations are key to understanding the physics of low-luminosityblack hole accretion.
Publications	XMM-Newton observations of Seyfert galaxies from the Palomar spectroscopic survey: the X-ray absorption distribution \|Akylas A. Georgantopoulos I. \| A&A \| 500-999 \| 2009 \| 2009A&A...500..999A \| http://ui.adsabs.harvard.edu/#abs/2009A&A...500..999A Probing the Accretion Disk and Central Engine Structure of NGC 4258 with Suzaku and XMM-Newton Observations \|Reynolds Christopher S. Nowak Michael A. et al. \| ApJ \| 691-1159 \| 2009 \| 2009ApJ...691.1159R \| http://ui.adsabs.harvard.edu/#abs/2009ApJ...691.1159R An Extremely Luminous Panchromatic Outburst from the Nucleus of a Distant Galaxy \|Levan A. J. Tanvir N. R. et al. \| Sci \| 333-199 \| 2011 \| 2011Sci...333..199L \| http://ui.adsabs.harvard.edu/#abs/2011Sci...333..199L Studying the X-ray/UV Variability of Active Galactic Nuclei with data from Swift and XMM archives \|Turriziani Sara \| JPhCS \| 280-12005 \| 2011 \| 2011JPhCS.280a2005T \| http://ui.adsabs.harvard.edu/#abs/2011JPhCS.280a2005T New constraints on the X-ray spectral properties of type 1 active galactic nuclei \|Scott A. E. Stewart G. C. et al. \| MNRAS \| 417-992 \| 2011 \| 2011MNRAS.417..992S \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.417..992S Comparison between the luminosity functions of X-ray and OIII selected AGN \|Georgantopoulos I. Akylas A. \| A&A \| 509-38 \| 2010 \| 2010A&A...509A..38G \| http://ui.adsabs.harvard.edu/#abs/2010A&A...509A..38G The Origin of the Hot Gas in the Galactic Halo: Confronting Models with XMM-Newton Observations \|Henley David B. Shelton Robin L. et al. \| ApJ \| 723-935 \| 2010 \| 2010ApJ...723..935H \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...723..935H An XMM-Newton Survey of the Soft X-ray Background. I. The O VII and O VIII Lines Between l = 120 and l = 240 \|Henley David B. Shelton Robin L. \| ApJS \| 187-388 \| 2010 \| 2010ApJS..187..388H \| http://ui.adsabs.harvard.edu/#abs/2010ApJS..187..388H A serendipitous XMM survey of the SDSS: the evolution of the colour-magnitude diagram of X-ray AGN from z= 0.8 to 0.1 \|Georgakakis Antonis Nandra K. \| MNRAS \| 414-992 \| 2011 \| 2011MNRAS.414..992G \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.414..992G 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 Detectability of low-energy X-ray spectral components in type 1 active galactic nuclei \|Scott A. E. Stewart G. C. \| MNRAS \| 423-2633 \| 2012 \| 2012MNRAS.423.2633S \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.2633S The cosmological analysis of X-ray cluster surveys - II. Application of the CR-HR method to the XMM archive \|Clerc N. Sadibekova T. et al. \| MNRAS \| 423-3561 \| 2012 \| 2012MNRAS.423.3561C \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.423.3561C X-ray variability of 104 active galactic nuclei. XMM-Newton power-spectrum density profiles \|Gonzalez-Martin O. Vaughan S. \| A&A \| 544-80 \| 2012 \| 2012A&A...544A..80G \| http://ui.adsabs.harvard.edu/#abs/2012A&A...544A..80G 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 Ensemble X-ray variability of active galactic nuclei from serendipitous source catalogues \|Vagnetti F. Turriziani S. \| A&A \| 536-84 \| 2011 \| 2011A&A...536A..84V \| http://ui.adsabs.harvard.edu/#abs/2011A&A...536A..84V Properties of the integrated spectrum of serendipitous 2XMM catalog sources \|Chaudhary P. Brusa M. et al. \| A&A \| 518-58 \| 2010 \| 2010A&A...518A..58C \| http://ui.adsabs.harvard.edu/#abs/2010A&A...518A..58C Rest-frame stacking of 2XMM catalog sources. Properties of the Fe Kalpha line \|Chaudhary P. Brusa M. et al. \| A&A \| 537-6 \| 2012 \| 2012A&A...537A...6C \| http://ui.adsabs.harvard.edu/#abs/2012A&A...537A...6C Using the Bright Ultrahard XMM-Newton survey to define an IR selection of luminous AGN based on WISE colours \|Mateos S. Alonso-Herrero A. et al. \| MNRAS \| 426-3271 \| 2012 \| 2012MNRAS.426.3271M \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426.3271M Cross-correlation of the 2XMMi catalogue with Data Release 7 of the Sloan Digital Sky Survey \|Pineau F.-X. Motch C. et al. \| A&A \| 527-126 \| 2011 \| 2011A&A...527A.126P \| http://ui.adsabs.harvard.edu/#abs/2011A&A...527A.126P 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 Exploring X-ray and radio emission of type 1 AGN up to z ~ 2.3 \|Ballo L. Heras F. J. H. et al. \| A&A \| 545-66 \| 2012 \| 2012A&A...545A..66B \| http://ui.adsabs.harvard.edu/#abs/2012A&A...545A..66B XMM-Newton Observations of Luminous Sources in Nearby Galaxies NGC 4395 NGC 4736 and NGC 4258 \|Akyuz A. Kayaci S. et al. \| AJ \| 145-67 \| 2013 \| 2013AJ....145...67A \| http://ui.adsabs.harvard.edu/#abs/2013AJ....145...67A An XMM-Newton Survey of the Soft X-Ray Background. III. The Galactic Halo X-Ray Emission \|Henley David B. Shelton Robin L. \| ApJ \| 773-92 \| 2013 \| 2013ApJ...773...92H \| http://ui.adsabs.harvard.edu/#abs/2013ApJ...773...92H Uncovering obscured luminous AGN with WISE \|Mateos S. Alonso-Herrero A. et al. \| MNRAS \| 434-941 \| 2013 \| 2013MNRAS.434..941M \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.434..941M Are X-Ray Emitting Coronae around Supermassive Black Holes Outflowing? \|Liu Teng Wang Jun-Xian et al. \| ApJ \| 783-106 \| 2014 \| 2014ApJ...783..106L \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...783..106L 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 Confirming the thermal Comptonization model for black hole X-ray emission in the low-hard state \|Castro M. DAmico F. et al. \| A&A \| 569-82 \| 2014 \| 2014A&A...569A..82C \| http://ui.adsabs.harvard.edu/#abs/2014A&A...569A..82C 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 The Origin of the Hot Gas in the Galactic Halo: Testing Galactic Fountain Models X-Ray Emission \|Henley David B. Shelton Robin L. et al. \| ApJ \| 800-102 \| 2015 \| 2015ApJ...800..102H \| http://ui.adsabs.harvard.edu/#abs/2015ApJ...800..102H Obscuration-dependent Evolution of Active Galactic Nuclei \|Buchner Johannes Georgakakis Antonis et al. \| ApJ \| 802-89 \| 2015 \| 2015ApJ...802...89B \| http://ui.adsabs.harvard.edu/#abs/2015ApJ...802...89B Revisiting the relationship between 6 mum and 2-10 keV continuum luminosities of AGN \|Mateos S. Carrera F. J. et al. \| MNRAS \| 449-1422 \| 2015 \| 2015MNRAS.449.1422M \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.449.1422M Do the spectral energy distributions of type 1 active galactic nuclei show diversity? \|Scott A. E. Stewart G. C. \| MNRAS \| 438-2253 \| 2014 \| 2014MNRAS.438.2253S \| http://ui.adsabs.harvard.edu/#abs/2014MNRAS.438.2253S NuSTAR Reveals Extreme Absorption in z < 0.5 Type 2 Quasars \|Lansbury G. B. Gandhi P. et al. \| ApJ \| 809-115 \| 2015 \| 2015ApJ...809..115L \| http://ui.adsabs.harvard.edu/#abs/2015ApJ...809..115L 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 The XMM spectral catalog of SDSS optically selected Seyfert 2 galaxies \|Koulouridis E. Georgantopoulos I. et al. \| A&A \| 586-3 \| 2016 \| 2016A&A...586A...3K \| http://ui.adsabs.harvard.edu/#abs/2016A&A...586A...3K XMM-Newton publication statistics \|Ness J.-U. Parmar A. N. et al. \| AN \| 335-210 \| 2014 \| 2014AN....335..210N \| http://ui.adsabs.harvard.edu/#abs/2014AN....335..210N The Tight Relation between X-Ray and Ultraviolet Luminosity of Quasars \|Lusso E. Risaliti G. \| ApJ \| 819-154 \| 2016 \| 2016ApJ...819..154L \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...819..154L X-ray Spectral and Optical Properties of a ULX in NGC 4258 (M106) \|Avdan H. Avdan S. et al. \| ApJ \| 828-105 \| 2016 \| 2016ApJ...828..105A \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...828..105A Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function \|Vagnetti F. Middei R. et al. \| A&A \| 593-55 \| 2016 \| 2016A&A...593A..55V \| http://ui.adsabs.harvard.edu/#abs/2016A&A...593A..55V 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 SPIDERS: the spectroscopic follow-up of X-ray selected clusters of galaxies in SDSS-IV \|Clerc N. Merloni A. et al. \| MNRAS \| 463-4490 \| 2016 \| 2016MNRAS.463.4490C \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.463.4490C 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 AGN spectral states from simultaneous UV and X-ray observations by XMM-Newton \|Svoboda J. Guainazzi M. \| A&A \| 603-127 \| 2017 \| 2017A&A...603A.127S \| http://ui.adsabs.harvard.edu/#abs/2017A&A...603A.127S The close environments of accreting massive black holes are shaped by radiative feedback \|Ricci Claudio Trakhtenbrot Benny et al. \| Natur \| 549-488 \| 2017 \| 2017Natur.549..488R \| http://ui.adsabs.harvard.edu/#abs/2017Natur.549..488R BAT AGN Spectroscopic Survey (BASS) - VI. The GammaX-L/LEdd relation \|Trakhtenbrot Benny Ricci Claudio et al. \| MNRAS \| 470-800 \| 2017 \| 2017MNRAS.470..800T \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.470..800T BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN Catalog \|Ricci C. Trakhtenbrot B. et al. \| ApJS \| 233-17 \| 2017 \| 2017ApJS..233...17R \| http://ui.adsabs.harvard.edu/#abs/2017ApJS..233...17R 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 The Swift/BAT AGN Spectroscopic Survey. IX. The Clustering Environments of an Unbiased Sample of Local AGNs \|Powell M. C. Cappelluti N. et al. \| ApJ \| 858-110 \| 2018 \| 2018ApJ...858..110P \| http://ui.adsabs.harvard.edu/#abs/2018ApJ...858..110P Imaging Plasma Density Structures in the Soft X-Rays Generated by Solar Wind Charge Exchange with Neutrals \|Sibeck David G. Allen R. et al. \| SSRv \| 214-79 \| 2018 \| 2018SSRv..214...79S \| http://ui.adsabs.harvard.edu/#abs/2018SSRv..214...79S A systematic search for near-infrared counterparts of nearby ultraluminous X-ray sources (II) \|Lopez K. M. Heida M. et al. \| MNRAS \| 469-671 \| 2017 \| 2017MNRAS.469..671L \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.469..671L Obscured Active Galactic Nuclei \|Hickox Ryan C. Alexander David M. \| ARA&A \| 56-625 \| 2018 \| 2018ARA&A..56..625H \| http://ui.adsabs.harvard.edu/#abs/2018ARA&A..56..625H 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 A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). II. Physical Properties Derived from the SED Fitting with Optical Infrared and Radio Data \|Toba Yoshiki Yamashita Takuji et al. \| ApJS \| 243-15 \| 2019 \| 2019ApJS..243...15T \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..243...15T Hot corona properties of Swift/BAT-detected AGNs \|Wang Chan Yu Li-Ming et al. \| MNRAS \| 487-2463 \| 2019 \| 2019MNRAS.487.2463W \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.487.2463W X-ray properties of the X-CLASS-redMaPPer galaxy cluster sample: the luminosity-temperature relation \|Molham Mona Clerc Nicolas et al. \| MNRAS \| 494-161 \| 2020 \| 2020MNRAS.494..161M \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.494..161M Accretion History of AGNs. II. Constraints on AGN Spectral Parameters Using the Cosmic X-Ray Background \|Ananna Tonima Tasnim Treister Ezequiel et al. \| ApJ \| 889-17 \| 2020 \| 2020ApJ...889...17A \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...889...17A The Variable and Non-variable X-Ray Absorbers in Compton-thin Type II Active Galactic Nuclei \|Laha Sibasish Markowitz Alex G. et al. \| ApJ \| 897-66 \| 2020 \| 2020ApJ...897...66L \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...897...66L Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks \|Kosiba Matej Lieu Maggie et al. \| MNRAS \| 496-4141 \| 2020 \| 2020MNRAS.496.4141K \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.496.4141K SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release \|Clerc N. Kirkpatrick C. C. et al. \| MNRAS \| 497-3976 \| 2020 \| 2020MNRAS.497.3976C \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.497.3976C The ULX source X-3 in NGC 4258: a search for its X-ray and optical properties \|Akyuz A. Avdan S. et al. \| MNRAS \| 499-2138 \| 2020 \| 2020MNRAS.499.2138A \| http://ui.adsabs.harvard.edu/#abs/2020MNRAS.499.2138A Constraining the Milky Way Mass with Its Hot Gaseous Halo \|Guo Fulai Zhang Ruiyu \| ApJ \| 904-14 \| 2020 \| 2020ApJ...904L..14G \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...904L..14G 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 A Luminous X-Ray Transient in SDSS J143359.16+400636.0: A Likely Tidal Disruption Event \|Brightman Murray Ward Charlotte et al. \| ApJ \| 909-102 \| 2021 \| 2021ApJ...909..102B \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...909..102B A nearby galaxy perspective on dust evolution. Scaling relations and constraints on the dust build-up in galaxies with the DustPedia and DGS samples \|Galliano Fru00e9du00e9ric Nersesian Angelos et al. \| A&A \| 649-18 \| 2021 \| 2021A&A...649A..18G \| http://ui.adsabs.harvard.edu/#abs/2021A&A...649A..18G 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 properties of the AGN torus as revealed from a set of unbiased NuSTAR observations \|Zhao X. Marchesi S. et al. \| A&A \| 650-57 \| 2021 \| 2021A&A...650A..57Z \| http://ui.adsabs.harvard.edu/#abs/2021A&A...650A..57Z 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 Comprehensive X-ray view of the active nucleus in NGC 4258 \|Masini A. Wijesekera J. V. et al. \| A&A \| 663-87 \| 2022 \| 2022A&A...663A..87M \| http://ui.adsabs.harvard.edu/#abs/2022A&A...663A..87M 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 Constraining the X-ray reflection in low accretion-rate active galactic nuclei using XMM-Newton NuSTAR and Swift \|Diaz Y. Hernu00e0ndez-Garcu00eda L. et al. \| A&A \| 669-114 \| 2023 \| 2023A&A...669A.114D \| http://ui.adsabs.harvard.edu/#abs/2023A&A...669A.114D X-ray emission from a rapidly accreting narrow-line Seyfert 1 galaxy at z = 6.56 \|Wolf J. Nandra K. et al. \| A&A \| 669-127 \| 2023 \| 2023A&A...669A.127W \| http://ui.adsabs.harvard.edu/#abs/2023A&A...669A.127W Hard X-Ray to Radio Multiwavelength SED Analysis of Local U/LIRGs in the GOALS Sample with a Self-consistent AGN Model including a Polar-dust Component \|Yamada Satoshi Ueda Yoshihiro et al. \| ApJS \| 265-37 \| 2023 \| 2023ApJS..265...37Y \| http://ui.adsabs.harvard.edu/#abs/2023ApJS..265...37Y 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	2006-11-17T14:56:24Z/2006-11-18T11:20:56Z
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	2007-12-12T00:00:00Z
Last Update	2025-01-27
Keywords	"xray investigations", "month variations", "iron emission line", "absorption line signatures", "xmm newton", "accretion disk structure", "XMM-Newton", "neutral absorbing column", "accretion disk geometry", "XMM", "NGC4258", "chandra acis data", "central blackhole", "ionized outflow hinted"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Christopher Reynolds, 2007, 'XMM-Newton observations of NGC4258', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-o8diovy