A dataset provided by the European Space Agency

Name: Characterizing the dusty, lowly-ionized warm absorber in NGC 3227
Published: 2008-01-10T00:00:00Z

Proposal ID	040027
Title	Characterizing the dusty, lowly-ionized warm absorber in NGC 3227
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400270101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0400270201
DOI	https://doi.org/10.5270/esa-lwb6yh4
Principal Investigator, PI	Dr Alex Markowitz
Abstract	The warm absorber of the low-luminosity Seyfert NGC 3227 is characterized by lowlevels of ionization, making it relatively unique among Seyferts. A high-qualitygrating spectrum, taken when the source is not in an obscured state, is neededfor further detailed study of the warm absorber. We propose a 110 ksecXMM-Newton observation to obtain RGS and EPIC spectra, probe the warm andneutral absorber properties, search for expected signatures of dust embedded inthe warm absorber, and search for flux-dependent spectral changes. We will alsocharacterize energy-dependent timing properties to fully explore Seyfert/X-rayBinary analogies, and search for correlated X-ray/UV flux variability to testreprocessing models.
Publications	A New XMM-Newton Long Look of the Low-Luminosity Active Galactic Nucleus NGC 3226 \|Binder B. Markowitz A. \| ApJ \| 691-431 \| 2009 \| 2009ApJ...691..431B \| http://ui.adsabs.harvard.edu/#abs/2009ApJ...691..431B A Comprehensive X-Ray Spectral Analysis of the Seyfert 1.5 NGC 3227 \|Markowitz A. Reeves J. N. et al. \| ApJ \| 691-922 \| 2009 \| 2009ApJ...691..922M \| http://ui.adsabs.harvard.edu/#abs/2009ApJ...691..922M 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 Evidence for ultra-fast outflows in radio-quiet AGNs. I. Detection and statistical incidence of Fe K-shell absorption lines \|Tombesi F. Cappi M. et al. \| A&A \| 521-57 \| 2010 \| 2010A&A...521A..57T \| http://ui.adsabs.harvard.edu/#abs/2010A&A...521A..57T A Stochastic Model for the Luminosity Fluctuations of Accreting Black Holes \|Kelly Brandon C. Sobolewska Malgorzata \| ApJ \| 730-52 \| 2011 \| 2011ApJ...730...52K \| http://ui.adsabs.harvard.edu/#abs/2011ApJ...730...52K Probing variability patterns of the Fe K line complex in bright nearby AGNs \|de Marco B. Iwasawa K. et al. \| A&A \| 507-159 \| 2009 \| 2009A&A...507..159D \| http://ui.adsabs.harvard.edu/#abs/2009A&A...507..159D Study of LINER sources with broad Halpha emission. X-ray properties and comparison to luminous AGN and X-ray binaries \|Younes G. Porquet D. et al. \| A&A \| 530-149 \| 2011 \| 2011A&A...530A.149Y \| http://ui.adsabs.harvard.edu/#abs/2011A&A...530A.149Y 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 Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM-Newton: spectral energy distributions for the reverberation mapped sample \|Vasudevan R. V. Fabian A. C. \| MNRAS \| 392-1124 \| 2009 \| 2009MNRAS.392.1124V \| http://ui.adsabs.harvard.edu/#abs/2009MNRAS.392.1124V Testing a Scale-independent Method to Measure the Mass of Black Holes \|Gliozzi M. Titarchuk L. et al. \| ApJ \| 735-16 \| 2011 \| 2011ApJ...735...16G \| http://ui.adsabs.harvard.edu/#abs/2011ApJ...735...16G 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 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 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 X-ray spectral variability of seven LINER nuclei with XMM-Newton and Chandra data \|Hernandez-Garcia L. Gonzalez-Martin O. et al. \| A&A \| 556-47 \| 2013 \| 2013A&A...556A..47H \| http://ui.adsabs.harvard.edu/#abs/2013A&A...556A..47H 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 Deconvolving X-Ray Spectral Variability Components in the Seyfert 1.5 NGC 3227 \|Arevalo P. Markowitz A. \| ApJ \| 783-82 \| 2014 \| 2014ApJ...783...82A \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...783...82A 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 Warm absorbers in X-rays (WAX) a comprehensive high-resolution grating spectral study of a sample of Seyfert galaxies - I. A global view and frequency of occurrence of warm absorbers. \|Laha Sibasish Guainazzi Matteo et al. \| MNRAS \| 441-2613 \| 2014 \| 2014MNRAS.441.2613L \| http://ui.adsabs.harvard.edu/#abs/2014MNRAS.441.2613L 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 narrow Fe Kalpha line and the molecular torus in active galactic nuclei: an IR/X-ray view \|Ricci C. Ueda Y. et al. \| A&A \| 567-142 \| 2014 \| 2014A&A...567A.142R \| http://ui.adsabs.harvard.edu/#abs/2014A&A...567A.142R X-ray spectral variability of LINERs selected from the Palomar sample \|Hernandez-Garcia L. Gonzalez-Martin O. et al. \| A&A \| 569-26 \| 2014 \| 2014A&A...569A..26H \| http://ui.adsabs.harvard.edu/#abs/2014A&A...569A..26H 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 Search for X-ray occultations in active galactic nuclei \|Torricelli-Ciamponi G. Pietrini P. et al. \| MNRAS \| 442-2116 \| 2014 \| 2014MNRAS.442.2116T \| http://ui.adsabs.harvard.edu/#abs/2014MNRAS.442.2116T Modulated X-ray emission of the magnetic O8.5V-star Tr16-22 \|Naze Yael Wade Gregg A. \| A&A \| 569-70 \| 2014 \| 2014A&A...569A..70N \| http://ui.adsabs.harvard.edu/#abs/2014A&A...569A..70N Multiwavelength campaign on Mrk 509. XIII. Testing ionized-reflection models on Mrk 509 \|Boissay R. Paltani S. et al. \| A&A \| 567-44 \| 2014 \| 2014A&A...567A..44B \| http://ui.adsabs.harvard.edu/#abs/2014A&A...567A..44B 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 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 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 A variable-density absorption event in NGC 3227 mapped with Suzaku and Swift \|Beuchert T. Markowitz A. G. et al. \| A&A \| 584-82 \| 2015 \| 2015A&A...584A..82B \| http://ui.adsabs.harvard.edu/#abs/2015A&A...584A..82B X-ray spectral parameters for a sample of 95 active galactic nuclei \|Vasylenko A. A. Zhdanov V. I. \| Ap&SS \| 360-71 \| 2015 \| 2015Ap&SS.360...71V \| http://ui.adsabs.harvard.edu/#abs/2015Ap&SS.360...71V Warm absorbers in X-rays (WAX) a comprehensive high-resolution grating spectral study of a sample of Seyfert Galaxies - II. Warm absorber dynamics and feedback to galaxies \|Laha Sibasish Guainazzi Matteo et al. \| MNRAS \| 457-3896 \| 2016 \| 2016MNRAS.457.3896L \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.457.3896L 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 A hard X-ray view of the soft excess in AGN \|Boissay Rozenn Ricci Claudio \| A&A \| 588-70 \| 2016 \| 2016A&A...588A..70B \| http://ui.adsabs.harvard.edu/#abs/2016A&A...588A..70B 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 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 A new sample of X-ray selected narrow emission-line galaxies. II. Looking for True Seyfert 2 \|Pons E. Watson M. G. \| A&A \| 594-72 \| 2016 \| 2016A&A...594A..72P \| http://ui.adsabs.harvard.edu/#abs/2016A&A...594A..72P 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 A systematic study of the condensation of the corona and the application for Gamma 2-10 keV-Lbol/LEdd correlation in luminous active galactic nuclei \|Qiao Erlin Liu B. F. \| MNRAS \| 477-210 \| 2018 \| 2018MNRAS.477..210Q \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.477..210Q 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 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 X-ray occultations in active galactic nuclei: distribution in size of orbiting clouds and total mass content in the cloud ensemble \|Pietrini P. Torricelli-Ciamponi G. \| A&A \| 628-26 \| 2019 \| 2019A&A...628A..26P \| http://ui.adsabs.harvard.edu/#abs/2019A&A...628A..26P 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 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 Combined Analysis of X-Ray Spectra of NGC 3227 \|Newman J. Tsuruta S. et al. \| ApJ \| 907-45 \| 2021 \| 2021ApJ...907...45N \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...907...45N 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 Are Compton-thin AGNs Globally Compton Thin? \|Tzanavaris P. Yaqoob T. et al. \| ApJ \| 922-85 \| 2021 \| 2021ApJ...922...85T \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...922...85T 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 Transient obscuration event captured in NGC 3227. II. Warm absorbers and obscuration events in archival XMM-Newton and NuSTAR observations \|Wang Yijun Kaastra Jelle et al. \| A&A \| 657-77 \| 2022 \| 2022A&A...657A..77W \| http://ui.adsabs.harvard.edu/#abs/2022A&A...657A..77W Density Profile of the Ambient Circumnuclear Medium in Seyfert 1 Galaxies \|Wang Yijun He Zhicheng et al. \| ApJ \| 928-7 \| 2022 \| 2022ApJ...928....7W \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...928....7W 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 A Systematic Study of the Short-term X-Ray Variability of Seyfert Galaxies. I. Diversity of the X-Ray rms Spectra \|Hu Jingwei Jin Chichuan et al. \| ApJ \| 936-105 \| 2022 \| 2022ApJ...936..105H \| http://ui.adsabs.harvard.edu/#abs/2022ApJ...936..105H 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 Exploring X-Ray Properties of Low-metallicity Dwarf Galaxies \|Cann Jenna M. Weaver Kimberly A. et al. \| ApJ \| 961-178 \| 2024 \| 2024ApJ...961..178C \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...961..178C 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 Black Hole Mass Determination Using X-ray Data \|Jang Insuk \| PhDT \| 0-58 \| 2014 \| 2014PhDT........58J \| http://ui.adsabs.harvard.edu/#abs/2014PhDT........58J X-ray spectral variability of low ionization nuclear emission line regions (LINERs) \|Hernu00e1ndez-Garcu00eda L. Gonzu00e1lez-Martu00edn O. et al. \| hsa8 \| 0-228 \| 2015 \| 2015hsa8.conf..228H \| http://ui.adsabs.harvard.edu/#abs/2015hsa8.conf..228H X-ray emission mechanisms in active galactic nuclei \|Boissay-Malaquin Rozenn \| PhDT \| 0-395 \| 2016 \| 2016PhDT.......395B \| http://ui.adsabs.harvard.edu/#abs/2016PhDT.......395B Multiwavelength observations of Active Galactic Nuclei from the radio to the hard X-rays \|Beuchert Tobias \| PhDT \| 0-41 \| 2017 \| 2017PhDT........41B \| http://ui.adsabs.harvard.edu/#abs/2017PhDT........41B Extinction and AGN over host galaxy contrast effects on the optical spectroscopic classification of AGN \|Barquu00edn-Gonzu00e1lez L. Mateos S. et al. \| A&A \| 687-A159 \| 2024 \| 2024A&A...687A.159B \| http://ui.adsabs.harvard.edu/#abs/2024A&A...687A.159B X-ray occultations in active galactic nuclei: Physical properties of eclipsing clouds as part of the broad-line region cloud ensemble \|Pietrini P. Torricelli-Ciamponi G. \| A&A \| 690-A175 \| 2024 \| 2024A&A...690A.175P \| http://ui.adsabs.harvard.edu/#abs/2024A&A...690A.175P Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE \|Ma Xiangyao Zhang Yanxia et al. \| AJ \| 168-210 \| 2024 \| 2024AJ....168..210M \| http://ui.adsabs.harvard.edu/#abs/2024AJ....168..210M New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D Broad-Band X-Ray Analysis of NGC 3227 \|Newman Jared Tsuruta Sachiko et al. \| PTEP \| 2024-093E01 \| 2024 \| 2024PTEP.2024i3E01N \| http://ui.adsabs.harvard.edu/#abs/2024PTEP.2024i3E01N
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2006-12-03T01:53:31Z/2006-12-04T10:45:18Z
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	2008-01-10T00:00:00Z
Last Update	2025-08-04
Keywords	"XMM", "epic spectra", "XMM-Newton", "flux dependent spectral", "dust embedded", "quality grating spectrum", "uv flux variability", "neutral absorber properties", "low levels", "ngc 3227", "correlated xray", "EPIC", "NGC 3227", "test reprocessing models", "explore seyfert", "energy dependent", "warm absorber", "110 xmm newton"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Alex Markowitz, 2008, 'Characterizing the dusty, lowly-ionized warm absorber in NGC 3227', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lwb6yh4