A dataset provided by the European Space Agency

Name: XMM Observations of Hard comma Optically-Faint QSOs Discovered with ASCA
Published: 2004-09-11T00:00:00Z

Proposal ID	014758
Title	XMM Observations of Hard, Optically-Faint QSOs Discovered with ASCA
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147580101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147580201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147580301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147580401 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147580501
DOI	https://doi.org/10.5270/esa-v0qnuo0
Principal Investigator, PI	Dr Yoshihiro Ueda
Abstract	We propose observations of medium-z QSOs with hard X-ray spectra in a bright,hard-band selected sample of the ASCA Medium Sensitivity Survey. These objectsare considered to be bright (hence rare) counterparts of optically faint..objects detected at much fainter fluxes, which contribute a major part of thehard X-ray background. Due to their brightness, this sample gives us an idealopportunity to investigate the nature of the key population that makes up theCXB. The purpose of the XMM observations is to reveal the origin of the hardnessof their spectra. This study is critical for understanding of the origin of theCXB, and for a test of the standard AGN synthesis models based on the unifiedscheme of the AGNs, in particular, on the presence of luminous type-2 QSOs.
Publications	The XMM-Newton Needles in the Haystack Survey: the local X-ray luminosity function of normal. galaxies \|Georgantopoulos, I., Georgakakis, A., \| MNRAS \| 360-782 \| 2005 \| 2005MNRAS.360..782G \| http://ui.adsabs.harvard.edu/#abs/2005MNRAS.360..782G 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 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 The XMM-Newton Wide Angle Survey (XWAS): the X-ray spectrum of type-1 AGN \|Mateos, S., Carrera, F. J., et al. \| A&A \| 510-35 \| 2010 \| 2010A&A...510A..35M \| http://ui.adsabs.harvard.edu/#abs/2010A&A...510A..35M Average Fe Kalpha emission from distant AGN \|Corral, A., Page, M. J., et al. \| A&A \| 492-71 \| 2008 \| 2008A&A...492...71C \| http://ui.adsabs.harvard.edu/#abs/2008A&A...492...71C 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 X-ray absorption in distant type II QSOs \|Krumpe, M., Lamer, G., et al. \| A&A \| 483-415 \| 2008 \| 2008A&A...483..415K \| http://ui.adsabs.harvard.edu/#abs/2008A&A...483..415K The x-ray luminous galaxy cluster population at 0.9 < z &lsim; 1.6 as revealed by the XMM-Newton Distant Cluster Project \|Fassbender, R., Bohringer, H., et al. \| NJPh \| 13-125014 \| 2011 \| 2011NJPh...13l5014F \| http://ui.adsabs.harvard.edu/#abs/2011NJPh...13l5014F 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 X-ray Emission from Optically Selected Radio-intermediate and Radio-loud Quasars \|Miller, B. P., Brandt, W. N., et al. \| ApJ \| 726-20 \| 2011 \| 2011ApJ...726...20M \| http://ui.adsabs.harvard.edu/#abs/2011ApJ...726...20M 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 The X-ray Properties of the Optically Brightest Mini-Bal Quasars from the Sloan Digital Sky Survey \|Wu, Jianfeng, Brandt, W. N., et al. \| ApJ \| 724-762 \| 2010 \| 2010ApJ...724..762W \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...724..762W X-ray Insights into the Physics of Mini-BAL Quasar Outflows \|Gibson, Robert R., Brandt, W. N., et al. \| ApJ \| 696-924 \| 2009 \| 2009ApJ...696..924G \| http://ui.adsabs.harvard.edu/#abs/2009ApJ...696..924G Are Optically Selected Quasars Universally X-Ray Luminous? X-Ray-UV Relations in Sloan Digital Sky Survey Quasars \|Gibson, Robert R., Brandt, W. N., \| ApJ \| 685-773 \| 2008 \| 2008ApJ...685..773G \| http://ui.adsabs.harvard.edu/#abs/2008ApJ...685..773G 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 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 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 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 Variability and the X-ray/UV ratio of active galactic nuclei \|Vagnetti, F., Turriziani, S., et al. \| A&A \| 519-17 \| 2010 \| 2010A&A...519A..17V \| http://ui.adsabs.harvard.edu/#abs/2010A&A...519A..17V 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 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 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 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 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 The XMM-Newton Wide Angle Survey (XWAS) \|Esquej, P., Page, M., et al. \| A&A \| 557-123 \| 2013 \| 2013A&A...557A.123E \| http://ui.adsabs.harvard.edu/#abs/2013A&A...557A.123E 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 Finding rare AGN: XMM-Newton and Chandra observations of SDSS Stripe 82 \|LaMassa, Stephanie M., Urry, C. Megan, et al. \| MNRAS \| 436-3581 \| 2013 \| 2013MNRAS.436.3581L \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.436.3581L 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 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 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 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 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 A survey of stellar X-ray flares from the XMM-Newton serendipitous source catalogue: HIPPARCOS-Tycho cool stars \|Pye, J. P., Rosen, S., et al. \| A&A \| 581-28 \| 2015 \| 2015A&A...581A..28P \| http://ui.adsabs.harvard.edu/#abs/2015A&A...581A..28P 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 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 Way.s 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 3XMM/SDSS Stripe 82 Galaxy Cluster Survey. I. Cluster catalogue and discovery of two merging cluster candidates \|Takey, A., Durret, F., et al. \| A&A \| 594-32 \| 2016 \| 2016A&A...594A..32T \| http://ui.adsabs.harvard.edu/#abs/2016A&A...594A..32T 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 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 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 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 Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-Ray Survey \|LaMassa, Stephanie M., Glikman, Eilat, et al. \| ApJ \| 847-100 \| 2017 \| 2017ApJ...847..100L \| http://ui.adsabs.harvard.edu/#abs/2017ApJ...847..100L 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 Luminous WISE-selected Obscured, Unobscured, and Red Quasars in Stripe 82 \|Glikman, E., Lacy, M., et al. \| ApJ \| 861-37 \| 2018 \| 2018ApJ...861...37G \| http://ui.adsabs.harvard.edu/#abs/2018ApJ...861...37G 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 Chandra Multi-Wavelength Project: Normal Galaxies at Intermediate Redshift \|Kim, D.-W., Green, P. J., et al. \| ChJAS \| 8-138 \| 2008 \| 2008ChJAS...8..138K \| http://ui.adsabs.harvard.edu/#abs/2008ChJAS...8..138K The Massive and Distant Clusters of WISE Survey. I. Survey Overview and a Catalog of >2000 Galaxy Clusters at z virgul= 1 \|Gonzalez, Anthony H., Gettings, Daniel P., et al. \| ApJS \| 240-33 \| 2019 \| 2019ApJS..240...33G \| http://ui.adsabs.harvard.edu/#abs/2019ApJS..240...33G 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 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 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 A Comparison of X-Ray Photon Indices among the Narrow- and Broad-line Seyfert 1 Galaxies \|Ojha, Vineet, Chand, Hum, et al. \| ApJ \| 896-95 \| 2020 \| 2020ApJ...896...95O \| http://ui.adsabs.harvard.edu/#abs/2020ApJ...896...95O 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 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 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 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 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 On the Cosmic Evolution of AGN Obscuration and the X-Ray Luminosity Function: XMM-Newton and Chandra Spectral Analysis of the 31.3 degSUP_OPEN2SUP_CLOSE Stripe 82X \|Peca, Alessandro, Cappelluti, Nico, et al. \| ApJ \| 943-162 \| 2023 \| 2023ApJ...943..162P \| http://ui.adsabs.harvard.edu/#abs/2023ApJ...943..162P 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 The Accretion History of AGN: The Spectral Energy Distributions of X-Ray-luminous Active Galactic Nuclei \|Auge, Connor, Sanders, David, et al. \| ApJ \| 957-19 \| 2023 \| 2023ApJ...957...19A \| http://ui.adsabs.harvard.edu/#abs/2023ApJ...957...19A A Statistical Study of Soft X-Ray Flares on Solar-type Stars \|Zhao, Z. H., Hua, Z. Q., et al. \| ApJ \| 961-130 \| 2024 \| 2024ApJ...961..130Z \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...961..130Z 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	2002-12-27T20:55:42Z/2003-08-09T10:44:54Z
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	2004-09-11T00:00:00Z
Keywords	"medium z qsos", "luminous type", "key population", "XMM", "hard band", "unified scheme", "hard xray background", "rare counterparts", "fainter fluxes", "hard xray spectra", "optically faint qsos"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Yoshihiro Ueda, 2004, 'XMM Observations of Hard comma Optically-Faint QSOs Discovered with ASCA', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-v0qnuo0