A dataset provided by the European Space Agency

Name 030599
Title Study of X-ray Weakness among Luminous Narrow-line Quasars
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0305990101

DOI 10.5270/esa-87dnqyr
Author Dr Chiho Matsumoto
Description The unusual properties of Narrow-line Seyfert 1 galaxies (NLS1s) are thought to result from a higher accretion rate relative to Eddington than broad-line Seyferts. Luminous NLS1s should have the highest accretion rates of all. With our recent study, several X-ray weak objects were found, and it is suggested that X-ray weakness may occur more frequently among more luminous regime. To investigate the nature of X-ray weak objects, we propose short observations of four optically-luminous X-ray--weak NLS1s with XMM-Newton.
Publication 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 ,
The XMM Cluster Survey: X-ray analysis methodology . Lloyd-Davies, E. J., Romer, A. Kathy, et all. . MNRAS . 418-14 . 2011 . 2011MNRAS.418...14L ,
The cosmological analysis of X-ray cluster surveys - II. Application of the CR-HR method to the XMM archive . Clerc, N., Sadibekova, T., et all. . MNRAS . 423-3561 . 2012 . 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 ,
Cross-correlation of the 2XMMi catalogue with Data Release 7 of the Sloan Digital Sky Survey . Pineau, F.-X., Motch, C., et all. . A&A . 527-126 . 2011 . 2011A&A...527A.126P ,
Exploring X-ray and radio emission of type 1 AGN up to z ~ 2.3 . Ballo, L., Heras, F. J. H., et all. . A&A . 545-66 . 2012 . 2012A&A...545A..66B ,
An Archival Chandra and XMM-Newton Survey of Type 2 Quasars . Jia, Jianjun, Ptak, Andrew, et all. . ApJ . 777-27 . 2013 . 2013ApJ...777...27J ,
The diversity of quasars unified by accretion and orientation . Shen, Yue, Ho, Luis C., . Natur . 513-210 . 2014 . 2014Natur.513..210S ,
Serendipitous UV source ...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-04-18T11:53:49Z/2006-04-18T15:39:03Z
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 2007-05-19T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-05-19T00:00:00Z, 030599, 17.56_20190403_1200. https://doi.org/10.5270/esa-87dnqyr