A dataset provided by the European Space Agency

Name 040502
Title Unabsorbed type 2 Seyfert galaxies: a challenge for Unified Models
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405020601
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0405020801

DOI 10.5270/esa-1j3imjr
Author Dr Stefano Bianchi
Description We propose to observe with XMM-Newton a sample of 'bona-fide. Seyfert 2 galaxies with no X-ray absorption. The selected sources are a conservative subsample taken from the Panessa & Bassani (2002) sample, including only Seyfert 2s where no column density in excess of the Galactic one has ever been observed in the X-rays, within sensitive limits. The primary goal of this proposal is to find objects unabsorbed in the X-rays and without broad optical lines, which would represent a serious challenge to simple AGN Unification Models. The key to find genuine 'unabsorbed Seyfert 2s., excluding variability issues, is to perform simultaneous X-ray and optical spectroscopy. We therefore intend to coordinate ground-based optical observations with the XMM-Newton observations.
Publication 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 ,
The Suzaku X-ray spectrum of NGC 3147. Further insights on the best "true" Seyfert 2 galaxy candidate . Matt, G., Bianchi, S., et all. . A&A . 540-111 . 2012 . 2012A&A...540A.111M ,
X-ray colour-colour selection for heavily absorbed active galactic nuclei . Brightman, Murray, Nandra, Kirpal, . MNRAS . 422-1166 . 2012 . 2012MNRAS.422.1166B ,
The XMM Cluster Survey: optical analysis methodology and the first data release . Mehrtens, Nicola, Romer, A. Kathy, et all. . MNRAS . 423-1024 . 2012 . 2012MNRAS.423.1024M ,
On the nature of unabsorbed Seyfert 2 galaxies . Brightman, Murray, Nandra, Kirpal, . MNRAS . 390-1241 . 2008 . 2008MNRAS.390.1241B ,
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 ,
Probing variability patterns of the Fe K line complex in bright nearby AGNs . de Marco, B., Iwasawa, K., et all. . A&A . 507-159 . 2009 . 2009A&A...507..159D ,
An XMM-Newton spectral survey of 12 mum selected galaxies - I. X-ray data . Brightman, Murray, Nandra, Kirpal, . MNRAS . 413-1206 . 2011 . 2011MNR...,
Fe Kalpha line profile in AGNs: average shape and redshift dependence . Mao, Wei-Ming, Hu, Chen, et all. . RAA . 10-905 . 2010 . 2010RAA....10..905M ,
NGC 3147: a 'true. type 2 Seyfert galaxy without the broad-line region . Bianchi, S., Corral, A., et all. . MNRAS . 385-195 . 2008 . 2008MNRAS.385..195B ,
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 ,
The XMM Cluster Survey: X-ray analysis methodology . Lloyd-Davies, E. J., Romer, A. Kathy, et all. . MNRAS . 418-14 . 2011 . 2011MNRAS.418...14L ,
CAIXA: a catalogue of AGN in the XMM-Newton archive. III. Excess variance analysis . Ponti, G., Papadakis, I., et all. . A&A . 542-83 . 2012 . 2012A&A...542A..83P ,
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 ,
Simultaneous X-ray and optical observations of true type 2 Seyfert galaxies . Bianchi, Stefano, Panessa, Francesca, et all. . MNRAS . 426-3225 . 2012 . 2012MNRAS.426.3225B ,
Comparison of Millimeter-wave and X-Ray Emission in Seyfert Galaxies . Monje, R. R., Blain, A. W., . ApJS . 195-23 . 2011 . 2011ApJS..195...23M ,
Are X-Ray Emitting Coronae around Supermassive Black Holes Outflowing? . Liu, Teng, Wang, Jun-Xian, et all. . ApJ . 783-106 . 2014 . 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 all. . A&A . 567-92 . 2014 . 2014A&A...567A..92G ,
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 ,
Sunyaev-Zel.dovich effect or not? Detecting the main foreground effect of most galaxy clusters . Xiao, Weike, Chen, Chen, et all. . MNRAS . 432-41 . 2013 . 2013MNRAS.432L..41X ,
X-ray reverberation around accreting black holes . Uttley, P., Cackett, E. M., et all. . A&ARv . 22-72 . 2014 . 2014A&ARv..22...72U ,
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 ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
The NuSTAR view of the true type 2 Seyfert NGC 3147 . Bianchi, Stefano, Marinucci, Andrea, et all. . MNRAS . 468-2740 . 2017 . 2017MNRAS.468.2740B ,
Anisotropy of the galaxy cluster X-ray luminosity-temperature relation . Migkas, Konstantinos, Reiprich, Thomas H., . A&A . 611-50 . 2018 . 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 all. . ApJ . 852-83 . 2018 . 2018ApJ...852...83B ,
The XMM Cluster Survey: Present status and latest results . Viana, P. T. P., Mehrtens, N., et all. . AN . 334-462 . 2013 . 2013AN....334..462V ,
A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies . Earnshaw, H. P., Roberts, T. P., et all. . MNRAS . 483-5554 . 2019 . 2019MNRAS.483.5554E ,
Broad-band X-ray analysis of local mid-infrared-selected Compton-thick AGN candidates . La Caria, M.-M., Vignali, C., et all. . MNRAS . 487-1662 . 2019 . 2019MNRAS.487.1662L ,
Testing emergent gravity on galaxy cluster scales . Tamosiunas, Andrius, Bacon, David, et all. . JCAP . 5-53 . 2019 . 2019JCAP...05..053T ,
Chandra Follow-up of the SDSS DR8 Redmapper Catalog Using the MATCha Pipeline . Hollowood, Devon L., Jeltema, Tesla, et all. . ApJS . 244-22 . 2019 . 2019ApJS..244...22H ,
Stellar mass as a galaxy cluster mass proxy: application to the Dark Energy Survey redMaPPer clusters . Palmese, A., Annis, J., et all. . MNRAS . 493-4591 . 2020 . 2020MNRAS.493.4591P ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-10-06T14:47:22Z/2006-11-23T08:28:28Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2008-01-04T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-01-04T00:00:00Z, 040502, 17.56_20190403_1200. https://doi.org/10.5270/esa-1j3imjr