A dataset provided by the European Space Agency

Name: X-ray spectroscopy of NGC 4593
Published: 2002-08-11T00:00:00Z

Proposal ID	010997
Title	X-ray spectroscopy of NGC 4593
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0109970101
DOI	https://doi.org/10.5270/esa-wc7ywtb
Principal Investigator, PI	Dr Albert Brinkman
Abstract	We propose to observe the bright Seyfert 1 galaxy NGC 4593. This well-studiedobject has an X-ray spectrum consisting of a powerlaw, a warm absorber and areprocessed X-ray spectrum. Recent BeppoSAX data have put doubt upon theexistence of a soft excess. Using the RGS data we will study the absorption andemission spectrum from the warm absorber, in particular we want to detect the OVIII Lyman alpha line. These data will be supplemented by the EPIC data thatallows an accurate determination of the broad-band continuum radiation as wellas the iron-K emission and absorption complexes.
Publications	Chandra LETGS and XMM-Newton observations of NGC 4593 \|Steenbrugge, K. C., Kaastra, J. S., et al. \| A&A \| 408-921 \| 2003 \| 2003A&A...408..921S \| http://ui.adsabs.harvard.edu/#abs/2003A&A...408..921S Exploring the X-ray sky with the XMM-Newton bright serendipitous survey \|Della Ceca, R., Maccacaro, T., et al. \| A&A \| 428-383 \| 2004 \| 2004A&A...428..383D \| http://ui.adsabs.harvard.edu/#abs/2004A&A...428..383D High-precision multi-band measurements of the angular clustering of X-ray sources \|Ebrero, J., Mateos, S., et al. \| A&A \| 500-749 \| 2009 \| 2009A&A...500..749E \| http://ui.adsabs.harvard.edu/#abs/2009A&A...500..749E The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue \|Watson, M. G., Schroder, A. C., et al. \| A&A \| 493-339 \| 2009 \| 2009A&A...493..339W \| http://ui.adsabs.harvard.edu/#abs/2009A&A...493..339W Statistical evaluation of the flux cross-calibration of the XMM-Newton EPIC cameras \|Mateos, S., Saxton, R. D., et al. \| A&A \| 496-879 \| 2009 \| 2009A&A...496..879M \| http://ui.adsabs.harvard.edu/#abs/2009A&A...496..879M Understanding Dual Active Galactic Nucleus Activation in the nearby Universe \|Koss, Michael, Mushotzky, Richard, et al. \| ApJ \| 746-22 \| 2012 \| 2012ApJ...746L..22K \| http://ui.adsabs.harvard.edu/#abs/2012ApJ...746L..22K XMM-Newton Observations of Type-1 Active Galactic Nuclei \|Page, Kim, \| PhDT \| 0-177 \| 2003 \| 2003PhDT.......177P \| http://ui.adsabs.harvard.edu/#abs/2003PhDT.......177P X-ray colour-colour selection for heavily absorbed active galactic nuclei \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 422-1166 \| 2012 \| 2012MNRAS.422.1166B \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.422.1166B 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 Spectral Statistics and Local Luminosity Function of a Complete Hard X-Ray Sample of the Brightest Active Galactic Nuclei \|Shinozaki, K., Miyaji, T., et al. \| AJ \| 131-2843 \| 2006 \| 2006AJ....131.2843S \| http://ui.adsabs.harvard.edu/#abs/2006AJ....131.2843S The INTEGRAL complete sample of type 1 AGN \|Molina, M., Bassani, L., et al. \| MNRAS \| 399-1293 \| 2009 \| 2009MNRAS.399.1293M \| http://ui.adsabs.harvard.edu/#abs/2009MNRAS.399.1293M The Difference in Narrow Fe Kalpha Line Emission Between Seyfert 1 and Seyfert 2 Galaxies \|Liu, Teng, Wang, Jun-Xian, \| ApJ \| 725-2381 \| 2010 \| 2010ApJ...725.2381L \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...725.2381L High precision X-ray log N - log S distributions: implications for the obscured AGN population \|Mateos, S., Warwick, R. S., et al. \| A&A \| 492-51 \| 2008 \| 2008A&A...492...51M \| http://ui.adsabs.harvard.edu/#abs/2008A&A...492...51M Narrow Iron Kalpha Lines in Active Galactic Nuclei: Evolving Populations? \|Zhou, Xin-Lin, Wang, Jian-Min, \| ApJ \| 618-83 \| 2005 \| 2005ApJ...618L..83Z \| http://ui.adsabs.harvard.edu/#abs/2005ApJ...618L..83Z X-Ray Absorption from the Milky Way Halo and the Local Group \|Bregman, Joel N., Lloyd-Davies, Edward J., \| ApJ \| 669-990 \| 2007 \| 2007ApJ...669..990B \| http://ui.adsabs.harvard.edu/#abs/2007ApJ...669..990B The XMM-Newton serendipitous survey. VI. The X-ray luminosity function \|Ebrero, J., Carrera, F. J., et al. \| A&A \| 493-55 \| 2009 \| 2009A&A...493...55E \| http://ui.adsabs.harvard.edu/#abs/2009A&A...493...55E Search for narrow energy-shifted lines in AGN spectra in the XMM-Newton archive \|Longinotti, A. L., Bianchi, S., et al. \| AN \| 327-1020 \| 2006 \| 2006AN....327.1020L \| http://ui.adsabs.harvard.edu/#abs/2006AN....327.1020L Statistics of relativistically broadened Fe Kalpha lines in AGN \|Guainazzi, M., Bianchi, S., \| AN \| 327-1032 \| 2006 \| 2006AN....327.1032G \| http://ui.adsabs.harvard.edu/#abs/2006AN....327.1032G Breaking the sigma8-Omega m Degeneracy Using the Clustering of High-z X-ray Active Galactic Nuclei \|Basilakos, Spyros, Plionis, Manolis, \| ApJ \| 714-185 \| 2010 \| 2010ApJ...714L.185B \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...714L.185B Ultraviolet images of galaxies from the Optical Monitor on XMM-Newton \|Blustin, A. J., Branduardi-Raymont, G., et al. \| AdSpR \| 34-2540 \| 2004 \| 2004AdSpR..34.2540B \| http://ui.adsabs.harvard.edu/#abs/2004AdSpR..34.2540B An XMM-Newton spectral survey of 12 mum selected galaxies - I. X-ray data \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 413-1206 \| 2011 \| 2011MNRAS.413.1206B \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.413.1206B 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 Fe Kalpha line profile in AGNs: average shape and redshift dependence \|Mao, Wei-Ming, Hu, Chen, et al. \| RAA \| 10-905 \| 2010 \| 2010RAA....10..905M \| http://ui.adsabs.harvard.edu/#abs/2010RAA....10..905M 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 An XMM-Newton spectral survey of 12 mum selected galaxies - II. Implications for AGN selection and unification \|Brightman, Murray, Nandra, Kirpal, \| MNRAS \| 414-3084 \| 2011 \| 2011MNRAS.414.3084B \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.414.3084B 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 Mining for normal galaxies in the first XMM-Newton Serendipitous Source Catalog \|Georgakakis, A. E., Chavushyan, V., et al. \| MNRAS \| 367-1017 \| 2006 \| 2006MNRAS.367.1017G \| http://ui.adsabs.harvard.edu/#abs/2006MNRAS.367.1017G 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 The XMM-Newton serendipitous ultraviolet source survey catalogue \|Page, M. J., Brindle, C., et al. \| MNRAS \| 426-903 \| 2012 \| 2012MNRAS.426..903P \| http://ui.adsabs.harvard.edu/#abs/2012MNRAS.426..903P 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 virgul 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 The XMM-Newton serendipitous source catalogue \|Watson, M. G., Pye, J. P., et al. \| AN \| 324-89 \| 2003 \| 2003AN....324...89W \| http://ui.adsabs.harvard.edu/#abs/2003AN....324...89W The 2-8 keV cosmic X-ray background spectrum as observed with XMM-Newton \|De Luca, A., Molendi, S., \| A&A \| 419-837 \| 2004 \| 2004A&A...419..837D \| http://ui.adsabs.harvard.edu/#abs/2004A&A...419..837D X-Ray Properties of the Northern Galactic Cap Sources in the 58 Month Swift/BAT Catalog \|Vasudevan, Ranjan V., Brandt, William N., et al. \| ApJ \| 763-111 \| 2013 \| 2013ApJ...763..111V \| http://ui.adsabs.harvard.edu/#abs/2013ApJ...763..111V High spectral resolution X-ray observations of AGN \|Kaastra, J. S., \| AN \| 329-162 \| 2008 \| 2008AN....329..162K \| http://ui.adsabs.harvard.edu/#abs/2008AN....329..162K A Comparison of Hard X-ray Photon Indices and Iron Kalpha Emission Lines in X-ray Luminous Narrow- and Broad-line Seyfert 1 Galaxies \|Zhou, Xin-Lin, Zhang, Shuang-Nan, \| ApJ \| 713-11 \| 2010 \| 2010ApJ...713L..11Z \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...713L..11Z The INTEGRAL High-energy Cut-off Distribution of Type 1 Active Galactic Nuclei \|Malizia, A., Molina, M., et al. \| ApJ \| 782-25 \| 2014 \| 2014ApJ...782L..25M \| http://ui.adsabs.harvard.edu/#abs/2014ApJ...782L..25M 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 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 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 relationship between O IIIlambda5007 A equivalent width and obscuration in active galactic nuclei \|Caccianiga, A., Severgnini, P., \| MNRAS \| 415-1928 \| 2011 \| 2011MNRAS.415.1928C \| http://ui.adsabs.harvard.edu/#abs/2011MNRAS.415.1928C 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 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 Swift follow-up of IceCube triggers, and implications for the Advanced-LIGO era \|Evans, P. A., Osborne, J. P., et al. \| MNRAS \| 448-2210 \| 2015 \| 2015MNRAS.448.2210E \| http://ui.adsabs.harvard.edu/#abs/2015MNRAS.448.2210E 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 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 A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies \|Lubinski, P., Beckmann, V., et al. \| MNRAS \| 458-2454 \| 2016 \| 2016MNRAS.458.2454L \| http://ui.adsabs.harvard.edu/#abs/2016MNRAS.458.2454L The Rotation of the Hot Gas around the Milky Way \|Hodges-Kluck, Edmund J., Miller, Matthew J., \| ApJ \| 822-21 \| 2016 \| 2016ApJ...822...21H \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...822...21H 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 Studying Cosmic Evolution with the XMM-Newton Distant Cluster Project: X-ray Luminous Galaxy Clusters at z>virgul1 and their Galaxy Populations \|Fassbender, Rene, \| PhDT \| 0-116 \| 2008 \| 2008PhDT.......116F \| http://ui.adsabs.harvard.edu/#abs/2008PhDT.......116F High-resolution X-ray spectral diagnostics of active galactic nuclei \|Steenbrugge, Katrien Christine, \| PhDT \| 0-40 \| 2005 \| 2005PhDT........40S \| http://ui.adsabs.harvard.edu/#abs/2005PhDT........40S 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 The Near-infrared CO Absorption Band as a Probe to the Innermost Part of an AGN-obscuring Material \|Baba, Shunsuke, Nakagawa, Takao, et al. \| ApJ \| 852-83 \| 2018 \| 2018ApJ...852...83B \| http://ui.adsabs.harvard.edu/#abs/2018ApJ...852...83B Testing warm Comptonization models for the origin of the soft X-ray excess in AGNs \|Petrucci, P.-O., Ursini, F., et al. \| A&A \| 611-59 \| 2018 \| 2018A&A...611A..59P \| http://ui.adsabs.harvard.edu/#abs/2018A&A...611A..59P 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 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 An X-ray view of central engines of low-luminosity quasars (LLQSO) in the local Universe \|Laha, Sibasish, Ghosh, Ritesh, et al. \| MNRAS \| 480-1522 \| 2018 \| 2018MNRAS.480.1522L \| http://ui.adsabs.harvard.edu/#abs/2018MNRAS.480.1522L The Spectrum of the Universe \|Hill, Ryley, Masui, Kiyoshi W., \| ApSpe \| 72-663 \| 2018 \| 2018ApSpe..72..663H \| http://ui.adsabs.harvard.edu/#abs/2018ApSpe..72..663H The evolving X-ray spectrum of active galactic nuclei: Evidence for an increasing reflection fraction with redshift \|Avirett-Mackenzie, M. S., Ballantyne, D. R., \| MNRAS \| 486-3488 \| 2019 \| 2019MNRAS.486.3488A \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.486.3488A Broad-band X-ray analysis of local mid-infrared-selected Compton-thick AGN candidates \|La Caria, M.-M., Vignali, C., et al. \| MNRAS \| 487-1662 \| 2019 \| 2019MNRAS.487.1662L \| http://ui.adsabs.harvard.edu/#abs/2019MNRAS.487.1662L 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 Estimating the size of X-ray lamppost coronae in active galactic nuclei \|Ursini, F., Dov\\u010diak, M., et al. \| A&A \| 644-132 \| 2020 \| 2020A&A...644A.132U \| http://ui.adsabs.harvard.edu/#abs/2020A&A...644A.132U 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, Fr\\u00e9d\\u00e9ric, 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 Nitrogen X-ray absorption in the local ISM \|Gatuzz, Efrain, Garc\\u00eda, Javier A., \| MNRAS \| 504-4460 \| 2021 \| 2021MNRAS.504.4460G \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.504.4460G AGN impact on the molecular gas in galactic centres as probed by CO lines \|Esposito, Federico, Vallini, Livia, et al. \| MNRAS \| 512-686 \| 2022 \| 2022MNRAS.512..686E \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.512..686E 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 Unveiling energy pathways in AGN accretion flows with the warm corona model for the soft excess \|Ballantyne, D. R., Sudhakar, V., et al. \| MNRAS \| 530-1603 \| 2024 \| 2024MNRAS.530.1603B \| http://ui.adsabs.harvard.edu/#abs/2024MNRAS.530.1603B 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	2000-07-02T11:07:52Z/2000-07-02T18:55:34Z
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	2002-08-11T00:00:00Z
Keywords	"galaxy ngc 4593", "warm absorber", "NGC 4593", "EPIC", "soft excess", "bepposax data", "emission spectrum", "ngc 4593", "epic data", "x ray spectroscopy", "BeppoSAX", "absorption complexes", "xray spectrum consisting", "rgs data", "reprocessed xray spectrum", "bright seyfert"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Albert Brinkman, 2002, 'X-ray spectroscopy of NGC 4593', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-wc7ywtb